Forged Hose Couplings for Reliable Firefighting and Industrial Connections

Introduction

Hose couplings are small components with a major responsibility. They connect hoses to hydrants, pumps, valves, nozzles, irrigation equipment, and industrial systems, while helping maintain a continuous flow under pressure. A coupling that is difficult to operate, poorly matched, or unable to resist working conditions can reduce the effectiveness of an entire hose assembly. For this reason, professional users require couplings that combine secure connection, practical handling, appropriate pressure capability, and dependable service life.

The Italy UNI Hose Coupling range is designed to meet these needs through a forged construction, practical male-and-female configuration, and the use of aluminum alloy or brass. Available in 1-3/4-inch, or 45 mm, and 2-3/4-inch, or 70 mm, sizes, the couplings are suitable for firefighting, irrigation, petroleum, chemical, construction, and general industrial applications. Their Italian standard design provides a familiar connection solution for users who need efficient hose assembly and reliable performance.

These couplings are manufactured by Taizhou Shenlong Fire Science and Technology Co., Ltd., an established Chinese producer with experience in research and development, manufacturing, sales, and service. Founded in 1995, the company has developed a product portfolio centered on lined fire hoses while also supplying related firefighting products and various customized foreign-trade items. Its manufacturing background supports a practical understanding of how hoses, couplings, and connected equipment must work together in demanding environments.

This article examines the construction, performance, applications, manufacturing strengths, and purchasing considerations associated with these hose couplings. It also explains why forged construction, dual material availability, tool-free operation, and a balanced cost structure can make this product a strong alternative to less adaptable coupling solutions.

ITALY UNI Hose Couplings

What Are Italy UNI Hose Couplings?

Italy UNI Hose Couplings are connection fittings designed to join hose sections or connect a hose to compatible firefighting and industrial equipment. Each coupling set contains a male piece and a female piece. When correctly selected and assembled, these two components create a secure connection that supports the transfer of water and other suitable fluids through the hose system.

The design is based on an Italian standard configuration. This is important for buyers who work with equipment, hose assemblies, or replacement parts manufactured according to Italian dimensional and connection practices. A standardized design helps simplify specification, purchasing, replacement, and system maintenance. It can also reduce the risk of selecting incompatible fittings when a project already uses Italian-standard connections.

The coupling body is produced through forging rather than a basic cast-only process. Forging forms the metal under controlled pressure, helping produce a dense and mechanically reliable component. The result is a fitting intended to withstand regular handling, connection cycles, vibration, and working pressure in appropriate service conditions.

The couplings are available in aluminum alloy and brass. Aluminum alloy offers a lightweight solution that is convenient for portable firefighting equipment, mobile irrigation systems, and applications where repeated handling is common. Brass provides a robust metallic option with a traditional feel and useful resistance characteristics for many water and industrial service environments.

Both available sizes address common hose connection requirements. The 45 mm size, equivalent to 1-3/4 inches, is suitable for compact or medium-flow hose assemblies. The 70 mm size, equivalent to 2-3/4 inches, is intended for larger hose systems where a greater flow path and larger connection are needed. Buyers should always verify the hose diameter, thread or connection standard, operating conditions, and equipment interface before ordering.

Core Product Specifications

Product	Italy UNI Hose Couplings
Manufacturing method	Forged
Connection configuration	Male and female pieces supplied as a set
Working pressure	Up to 16 bar
Available materials	Aluminum alloy and brass
Design standard	Italian
Surface treatment	Polished
Available sizes	1-3/4 inches / 45 mm and 2-3/4 inches / 70 mm
Application areas	Firefighting, irrigation, petroleum, chemicals, and related industrial services
Operation	Designed for operation without additional tools

The listed working pressure is up to 16 bar. This rating gives professional users a clear reference point when matching the coupling to a hose and system. However, the complete assembly must be evaluated as a whole. Hose pressure, gasket condition, connection compatibility, fluid temperature, installation quality, and equipment condition can all affect safe operation. The coupling should never be used beyond the limitations established for the complete hose system.

Forged Construction for Reliable Service

Why Forging Matters

Forging is a manufacturing process in which metal is shaped through controlled mechanical force. Compared with simple forming or low-quality casting, forging can help create a more compact and consistent metal structure. For hose couplings, this is valuable because the component may experience pressure, impact, vibration, torque, and repeated attachment and removal throughout its service life.

A forged coupling is designed to provide a solid foundation for the connection. The body must retain its shape when the hose is pressurized and when operators handle the fitting in practical working conditions. A strong body also supports more reliable engagement between the male and female pieces, provided that the connection is correctly selected and maintained.

Forged construction is particularly useful in firefighting and industrial environments. Firefighting equipment may be transported, deployed quickly, dragged across surfaces, and exposed to sudden pressure changes. Irrigation equipment may be assembled and disassembled frequently during seasonal operations. Petroleum and chemical applications can involve demanding service conditions where material selection and component integrity are especially important.

Consistency in Production

The value of forging depends on controlled production. A professional manufacturer must manage material selection, forming conditions, dimensional control, finishing, inspection, and packaging. Consistent processing helps ensure that couplings within the same size range maintain compatible dimensions and predictable assembly characteristics.

The manufacturer’s combined research, development, production, sales, and service structure supports this type of product management. Rather than treating the coupling as an isolated commodity, the company can consider how it functions within a broader hose and firefighting product system. This experience is relevant when developing products for customers with different hose specifications, export requirements, and application conditions.

For buyers, this means that manufacturing method is more than a technical description. It is an indication that the product has been developed for practical mechanical use rather than only for appearance or low initial cost.

Material Options: Aluminum Alloy and Brass

Aluminum Alloy

Aluminum alloy is a practical choice when low weight is important. Firefighters and industrial operators may need to carry, move, or repeatedly connect hose assemblies. Reducing the weight of each fitting can improve handling and help operators deploy equipment more efficiently.

Aluminum alloy couplings can also be useful for mobile irrigation systems, emergency water delivery, construction sites, and equipment that is transported between locations. A lighter component may reduce fatigue during repeated setup and make storage and transportation more convenient.

The polished surface further contributes to a clean and practical appearance. It can make the fitting easier to inspect visually and may help reduce the retention of dirt on the external surface. Nevertheless, users should still rinse, dry, and inspect aluminum alloy couplings after exposure to corrosive liquids, salt-contaminated water, or industrial residues.

Brass

Brass is a familiar material for connection fittings and fluid-handling components. It provides a solid, substantial feel and is suitable for many firefighting, irrigation, petroleum, and chemical service applications when the fluid and operating conditions are compatible with the material.

Brass may be selected when users prefer a heavier fitting or require a traditional metal connection for existing equipment. It can also be advantageous where a robust tactile connection is valued during frequent assembly and disassembly.

Material selection should be based on the complete application rather than on general preference. Factors to consider include fluid composition, temperature, pressure, exposure to salt or chemicals, connection frequency, weight requirements, and compatibility with the hose and equipment. The availability of both aluminum alloy and brass gives purchasers greater flexibility than a single-material product range.

Surface Treatment and Resistance

The couplings receive a polished surface treatment. Polishing improves the visual finish and supports a smooth, professional appearance. It may also help make the fitting easier to clean and inspect, especially when the coupling is used in environments where mud, dust, or residue can accumulate.

The product information describes the surface as offering fair corrosion and chemical resistance. This wording is important because it accurately indicates that the coupling is intended for practical resistance, not unlimited immunity. No metallic coupling should be assumed to withstand every chemical, concentration, temperature, or exposure period.

In firefighting and irrigation, the principal fluid is often water, but water quality varies. Hard water, salt water, contaminated water, and stagnant water can affect metal surfaces over time. In petroleum and chemical operations, fluid compatibility must be assessed more carefully. The user should identify the exact fluid and consult appropriate technical guidance before placing the coupling into specialized chemical service.

Regular maintenance can significantly support surface performance. After use, operators should disconnect the coupling when appropriate, remove dirt and foreign matter, rinse away residues, dry the components, inspect the sealing areas, and store the fittings in a clean and ventilated location. If the coupling is exposed to aggressive materials, cleaning procedures should be established according to the relevant workplace safety requirements.

Secure Male-and-Female Connection

Each set includes a male and female piece. This arrangement provides the two complementary sides needed to connect compatible hose ends or equipment interfaces. It also makes procurement more straightforward because the user does not have to source the two components separately when a complete pair is required.

A secure connection depends on correct alignment and full engagement. Before assembly, the operator should check that the coupling size and standard match the hose or equipment. The sealing surfaces should be clean, and any gasket or sealing element should be correctly positioned and free from damage. The connection should be tightened or engaged according to the design without excessive force.

The male-and-female configuration is useful for emergency services because it supports quick hose deployment. It is also practical for irrigation crews, industrial maintenance teams, and construction workers who need to create or change hose routes without complicated procedures.

Tool-free operation is one of the product’s stated features. In practical terms, this means the coupling is designed to be connected and disconnected by hand under normal conditions, without requiring additional wrenches or specialized tools. This can save time and reduce the number of accessories operators must carry to the work site.

Tool-free does not mean careless. Operators should not force a coupling that is cross-threaded, contaminated, damaged, or mismatched. If a connection cannot be completed smoothly, the system should be depressurized and inspected rather than tightened with excessive force. Safe handling preserves both the fitting and the hose assembly.

Advantages Compared with Basic Coupling Alternatives

Forged Versus Basic Cast Construction

One important advantage is the forged manufacturing method. Basic cast couplings can be economical, but their quality depends heavily on casting control, material quality, and inspection. A poorly produced casting may contain unwanted internal discontinuities or dimensional inconsistencies. Forging is selected for this product because it offers a strong and dependable basis for a pressure-bearing connection.

This does not mean every forged product automatically outperforms every cast product. Performance depends on design, alloy, heat treatment, dimensions, finishing, and quality control. However, for buyers comparing products with similar designs and materials, forged construction is a meaningful feature that can support better mechanical reliability.

Dual Material Availability

Many coupling ranges focus on only one material. Offering aluminum alloy and brass allows the buyer to select according to weight, handling, environmental exposure, equipment compatibility, and budget. This is especially valuable for distributors and project suppliers who serve different customer groups.

A firefighting team may prioritize lighter aluminum alloy fittings for rapid deployment. A fixed industrial installation may prefer brass because of its heavier construction and familiar service characteristics. The same basic coupling design can therefore support different operational preferences without forcing every user into a single material choice.

Standardized Size Options

The 45 mm and 70 mm options cover two practical hose connection sizes. A focused range can make purchasing and inventory management simpler. Customers can select the size that matches their existing hose system rather than adapting the entire installation to an unusual fitting.

For distributors, standardized options also make product classification easier. The fittings can be organized by size, material, and male or female configuration. Clear organization reduces ordering errors and helps maintenance teams identify replacement parts quickly.

Practical Operating Cost

The product is described as an economical solution. Economy should be evaluated over the full service life rather than only by purchase price. A coupling that is easy to operate, available in suitable materials, and compatible with common hose systems can reduce labor time during installation and replacement.

Tool-free handling may reduce the need for specialized tools. Forged construction may help support service durability. A polished surface may simplify cleaning and visual inspection. Together, these features can contribute to a lower practical cost of ownership when the coupling is correctly selected and maintained.

Broad Application Range

The coupling is suitable for firefighting, irrigation, petroleum, and chemical applications, subject to material and compatibility checks. A broad application range is useful for manufacturers, contractors, equipment distributors, municipal departments, agricultural users, and industrial maintenance teams.

Products that can serve several industries are often more convenient for businesses that manage mixed inventories. A distributor can offer one recognized connection family to customers in multiple markets while still providing aluminum alloy and brass choices for different needs.

Applications in Firefighting

Firefighting is one of the most important application areas for hose couplings. During an emergency, personnel need to connect hoses quickly and create a reliable path for water delivery. Delays caused by poor fitting, difficult operation, or incompatible parts can reduce response efficiency.

The 45 mm coupling can be used for hose assemblies where a more compact connection is required. The 70 mm coupling is appropriate for larger hose arrangements designed for higher-volume water movement. Actual flow performance depends on the hose construction, internal diameter, pump output, nozzle, pressure loss, and system layout.

In a firefighting environment, couplings may be exposed to impact, outdoor weather, water contamination, dirt, and repeated handling. The forged body and polished surface are intended to support practical service under these conditions. Operators should inspect the coupling before and after use, paying close attention to cracks, deformation, damaged sealing areas, corrosion, and difficulty during engagement.

Fire departments and emergency equipment suppliers should also establish a compatibility policy. All hose, couplings, gaskets, hydrant interfaces, pumps, and nozzles must be matched to the applicable standard and pressure requirements. A coupling should not be selected solely because its nominal diameter appears similar to an existing fitting.

Applications in Irrigation and Agriculture

Irrigation systems often require hoses to be moved, extended, disconnected, and stored according to field conditions. A coupling that can be operated without additional tools can help agricultural workers adjust hose routes efficiently.

The aluminum alloy option is especially practical where low weight is valued. Portable irrigation lines may be carried over uneven ground, connected to pumps, or moved between fields. Reducing fitting weight can make these tasks easier, particularly when multiple hose sections are used.

The brass option may be preferred for fixed or semi-permanent installations where a heavier fitting is acceptable. It can also suit users who prioritize a substantial connection and established metal component design.

Agricultural water may contain suspended particles, fertilizers, or other substances that can affect equipment. Couplings should be flushed after use when necessary, and sealing surfaces should be protected from soil and debris. Proper storage helps prevent damage during periods when the irrigation system is not operating.

Applications in Petroleum and Chemical Industries

Petroleum and chemical operations require careful evaluation because fluid compatibility varies widely. The coupling product is identified for petroleum and chemical applications, but the exact service conditions must be reviewed before use. Important factors include the chemical identity, concentration, temperature, pressure, exposure duration, and possible interaction with the aluminum alloy, brass, gasket, and hose lining.

In these industries, the coupling may be used in transfer, maintenance, cleaning, emergency response, or temporary fluid-handling systems. The ability to connect and disconnect without tools can be valuable when equipment must be rearranged or isolated quickly. However, the system must be depressurized and made safe before disconnection.

Users should create written procedures for inspection and cleaning. Any sign of unusual discoloration, pitting, swelling, leakage, thread damage, or material deterioration should be investigated immediately. A coupling that appears externally acceptable may still be unsuitable if it has experienced chemical attack or repeated overload.

The polished surface can support easier visual inspection, but appearance alone is not proof of chemical compatibility. Professional users should confirm the material selection with the manufacturer or responsible technical authority for specialized service.

Manufacturing Strengths of the Supplier

Long-Term Industry Experience

Taizhou Shenlong Fire Science and Technology Co., Ltd. was founded in 1995. This gives the company a substantial operating history in the fire protection product field. Long-term experience can help a manufacturer understand recurring customer requirements, common installation problems, export expectations, and the practical differences between laboratory specifications and field use.

The company’s main products include lined fire hoses made from various materials. This hose-focused background is directly relevant to hose couplings because a coupling must function as part of a complete hose assembly. Knowledge of hose construction, reinforcement, lining, pressure behavior, and application conditions can support more appropriate coupling development and selection.

Integrated Research, Production, Sales, and Service

The company operates across research and development, production, sales, and service. This integrated structure can improve communication between customers and manufacturing teams. Application feedback from distributors and end users can be transferred into product development, process improvement, documentation, and after-sales support.

For international buyers, service capability is particularly important. A successful purchase involves more than shipping a product. It may require assistance with specification confirmation, material selection, size matching, packaging, documentation, replacement planning, and quality communication. A manufacturer that manages multiple stages internally is better positioned to coordinate these requirements.

Export-Oriented Cooperation

The company cooperates with four domestic foreign trade companies to produce export products, and its products are sold in many countries. This experience indicates familiarity with international trade coordination and overseas customer requirements. Export-oriented production commonly involves attention to packaging, product identification, shipment organization, and communication across different markets.

The company reports that its products are sold in more than 20 provinces, cities, and autonomous regions, as well as in international markets. A broad customer base can provide valuable feedback on product performance in different climates, industries, and operating environments.

Customized Product Capability

In addition to fire hoses and related products, the company can undertake various foreign-trade products according to customer requirements, including rubber, PVC, polyurethane, and double-sided tape products. This indicates experience with material-based manufacturing and customer-specific sourcing or production arrangements.

For hose coupling buyers, this broader capability may be useful when building a complete product program. A distributor or project contractor may need couplings together with hoses, accessories, cabinets, nozzles, or other fire protection products. Coordinating with a supplier that understands several related product categories can simplify project communication.

Quality Considerations for Buyers

When purchasing hose couplings, buyers should evaluate more than appearance and price. The first consideration is dimensional compatibility. Confirm the nominal size, connection standard, male or female configuration, and interface with the hose, hydrant, pump, valve, or nozzle.

The second consideration is pressure. The coupling is rated up to 16 bar under the stated product information, but the complete system must be rated appropriately. Buyers should compare the coupling rating with the hose working pressure, pump pressure, surge pressure, and any local regulatory requirements.

The third consideration is material compatibility. Aluminum alloy and brass have different weight, handling, and service characteristics. The choice should reflect the fluid, environment, operating frequency, and equipment design.

The fourth consideration is sealing. A coupling may have a strong body but still leak if the gasket is missing, damaged, incorrectly installed, or incompatible with the fluid. Replacement seals should be suitable for the intended service and stored away from heat, sunlight, oils, and chemicals that may cause deterioration.

The fifth consideration is traceability and supplier support. Professional users should ask for clear product identification, available sizes, material information, pressure data, packaging details, and guidance for inspection. These details support responsible purchasing and maintenance.

Installation and Operating Guidance

Before Connection

Confirm that the hose and coupling are the correct size and standard. Inspect the male and female components for damage, contamination, deformation, or corrosion. Check that the sealing surface and gasket are clean and correctly positioned.

During Connection

Align the components carefully and engage them according to the coupling design. Do not force the connection or use impact tools. If resistance occurs, disconnect and inspect the parts. Cross-threading, misalignment, and trapped debris can damage the fitting and create a leakage risk.

During Pressurization

Pressurize the system gradually when possible. Keep personnel away from the direct line of a connection while the hose is being brought up to pressure. Observe the coupling for leakage, movement, or unusual deformation. If a problem is detected, isolate the pressure source before attempting correction.

After Use

Depressurize the system fully before disconnecting. Remove dirt and residue, rinse the coupling when appropriate, dry it, and inspect the sealing area. Store the components in a clean location where they will not be crushed, dropped, or exposed unnecessarily to corrosive substances.

Maintenance and Service Life

Routine maintenance is essential for any hose coupling used in safety-related or industrial service. Inspection frequency should reflect the application. Firefighting equipment used regularly or stored for emergency response should be checked according to departmental procedures. Industrial users should establish inspection intervals based on pressure cycles, fluid exposure, connection frequency, and operating risk.

Look for cracks, dents, deep scratches, surface pitting, distortion, damaged threads, worn sealing areas, and evidence of leakage. A coupling that no longer connects smoothly should be removed from service until inspected. Operators should never attempt to restore a damaged pressure connection through improvised machining, welding, or excessive force unless an authorized technical procedure specifically permits it.

Cleaning should remove dirt without introducing damage. Harsh abrasives may alter sealing surfaces or remove protective finishing. Chemical cleaning agents should be checked for compatibility with the coupling material and gasket. After cleaning, the component should be dried thoroughly before storage.

Service life cannot be stated as one universal period because it depends on use. A coupling used occasionally with clean water may experience very different conditions from one exposed daily to abrasive water, chemicals, impact, or pressure cycling. Replacement decisions should be based on inspection findings, application requirements, and responsible maintenance policies.

Ordering and Supply Support

When requesting a quotation, buyers should provide the required size, material, quantity, male-and-female configuration, destination, application, and any documentation requirements. It is also useful to state the expected working pressure and fluid so the supplier can confirm suitability.

Distributors may wish to stock both 45 mm and 70 mm versions, with aluminum alloy and brass options where customer demand justifies the inventory. Keeping clear records of product size and material helps prevent incorrect shipments and simplifies replacement orders.

Project purchasers should consider the complete hose system rather than buying couplings in isolation. If hoses, nozzles, cabinets, hydrant accessories, or other fire protection products are required, coordinating the order with one experienced supplier may improve consistency across the installation.

Packaging should protect the polished surface and connection areas from impact, moisture, and contamination during transport. Buyers should inspect the shipment upon arrival and report discrepancies promptly. Correct storage before installation helps preserve the condition of the fittings.

Why the Product Is a Practical Choice

The strength of the Italy UNI Hose Coupling range lies in its balance of features. It offers a forged body, two useful sizes, two material choices, a male-and-female set configuration, polished finishing, a working pressure of up to 16 bar, and tool-free operation. These characteristics address the main concerns of professional hose users: connection security, handling, compatibility, durability, and cost.

Compared with a basic low-cost fitting, the forged construction and manufacturing background provide a stronger basis for dependable service. Compared with a single-material coupling, the aluminum alloy and brass options give users more freedom to match the product to the application. Compared with a coupling that requires special tools, the hand-operated design can simplify field work and reduce setup time.

The supplier’s experience since 1995, its research and development capability, its production and service structure, and its export cooperation further strengthen the product offering. Buyers are not only selecting a metal fitting; they are selecting a product supported by an organization familiar with fire hoses, industrial materials, and international supply requirements.

Q&A

What are Italy UNI Hose Couplings used for?

They are used to connect compatible hoses to other hoses, hydrants, pumps, valves, nozzles, and related equipment. Common application areas include firefighting, irrigation, petroleum, chemical handling, construction, and general industrial fluid transfer.

What sizes are available?

The available sizes are 1-3/4 inches, equivalent to 45 mm, and 2-3/4 inches, equivalent to 70 mm. The correct size must match the hose and the equipment connection.

What materials are offered?

The couplings are available in aluminum alloy and brass. Aluminum alloy is useful where lower weight and portability are important. Brass provides a heavier and traditional metallic option for many fluid-handling applications.

Are the couplings forged?

Yes. The product is manufactured using a forging method. Forging is selected to provide a strong and reliable component for hose connection service.

What is the working pressure?

The stated working pressure is up to 16 bar. The entire hose assembly must be evaluated, and the system should not be operated above the lowest-rated component or applicable safety requirement.

Does each set include both connection pieces?

Yes. Each set includes one male piece and one female piece. Buyers should still confirm the required quantity and configuration when placing an order.

Can the couplings be operated without tools?

They are designed for easy operation without additional tools under normal conditions. Operators should never force a damaged, contaminated, pressurized, or mismatched connection.

Are they resistant to chemicals?

The polished couplings provide fair corrosion and chemical resistance, but compatibility depends on the exact fluid, concentration, temperature, exposure time, gasket, and coupling material. Specialized chemical applications should be confirmed before use.

Which material is better, aluminum alloy or brass?

Neither material is universally better. Aluminum alloy is often preferred for lightweight portable equipment, while brass may be selected for a heavier, traditional metal fitting. The choice should consider fluid compatibility, operating environment, handling requirements, and existing equipment.

Who manufactures the couplings?

The couplings are manufactured by Taizhou Shenlong Fire Science and Technology Co., Ltd., a company founded in 1995 with activities covering research and development, production, sales, and service.

Can the couplings be used with any hose?

No. They must be matched with a hose and equipment using the compatible size and Italian standard connection. Users should verify dimensions, pressure, sealing requirements, and application compatibility before installation.

How should the couplings be maintained?

Inspect them regularly, clean away dirt and residues, rinse when appropriate, dry them thoroughly, protect the sealing areas, and store them in a clean location. Remove any coupling showing cracks, serious corrosion, deformation, damaged threads, or persistent leakage.

Conclusion

Reliable hose connections are essential in firefighting, irrigation, industrial maintenance, petroleum operations, and chemical service. The Italy UNI Hose Couplings provide a practical solution through forged construction, polished finishing, male-and-female set configuration, 16 bar working pressure, and availability in 45 mm and 70 mm sizes.

The aluminum alloy and brass material options allow users to choose between lightweight portability and a more substantial metallic construction. Tool-free operation supports fast assembly, while the Italian standard design helps users integrate the couplings into compatible hose and equipment systems. Their broad application range and economical positioning make them suitable for professional users, distributors, contractors, emergency services, and industrial facilities.

The manufacturing strengths of Taizhou Shenlong Fire Science and Technology Co., Ltd. add value to the product. Since 1995, the company has combined research and development, production, sales, and service, with experience in lined fire hoses and related foreign-trade products. Its export cooperation, broad domestic market presence, and ability to work with different materials support a dependable supply foundation.

For the best results, purchasers should select the correct size and material, confirm fluid and pressure compatibility, inspect every connection before use, and follow responsible maintenance procedures. When properly matched and maintained, these forged hose couplings offer an efficient, durable, and cost-conscious connection solution for demanding hose systems.

References

1. Product specification information for Italy UNI Hose Couplings, including size, material, pressure, manufacturing method, finishing, and application data.

2. Manufacturer profile and company information for Taizhou Shenlong Fire Science and Technology Co., Ltd.

3. General engineering principles concerning forged metal components and pressure-bearing hose fittings.

4. General maintenance practices for firefighting hoses, couplings, hydrant equipment, and industrial fluid-transfer assemblies.

5. General material compatibility principles for aluminum alloy, brass, hose linings, gaskets, petroleum products, and chemical fluids.

6. General workplace safety practices for pressurized hose systems and emergency firefighting equipment.

Product: ITALY UNI Hose Couplings