LUOYANG DATANG ENERGY TECH CO.,LTD
Brass fittings are the cornerstone that underpins the development of modern cities.
With four core advantages of durability, health safety, intelligence and sustainability, brass fittings have become the standard configuration for water supply and drainage, HVAC, fire protection and smart water systems in modern cities, and their market penetration keeps rising steadily.
Manufacturing of Brass Fittings
The manufacturing of brass fittings is a systematic engineering integrating materials science, precision forming, mechanical processing and surface engineering. Its craftsmanship level directly determines the fitting’s sealing performance, pressure resistance, corrosion resistance and service life.
| Hot Forging | Valve bodies, high-pressure joints, socket fittings | The blank is heated to 650℃–800℃ and formed by hydraulic die forging. It features dense grain structure, high strength and excellent fatigue resistance, accounting for over 70% of high-end municipal and construction fittings. |
| Precision Casting | Complex structural parts, special-shaped water diversion valves, decorative hardware | Adopts lost-wax casting or gravity sand casting. Suitable for small-batch production and complex flow channels, yet its internal compactness is slightly lower than that of forgings. |
| Cold/Hot Extrusion & Drawing | Pipe blanks, straight pipe joints | Used for manufacturing regular cross-section profiles, which require subsequent machining for final forming. |
Our products are mainly manufactured by adopting the above processes.
They have obtained global drinking water contact certifications, including NSF/ANSI 61, WRAS and GB 18145, complied with pressure grade standards PN16/PN25 and seismic specifications FM/UL and passed green building material evaluation, forming a closed loop of performance verification – certification testing – market access.
Performance and Advantages of Brass Fittings
Core Performance
- Mechanical strength: Tensile strength of 300–500 MPa; elongation of 15%–40%; excellent resistance to water hammer impact.
- Corrosion resistance: Resistant to fresh water, gas and atmospheric oxidation; alloyed with As/Sb/P to inhibit dezincification.
- Thermal stability: Thermal conductivity of 100–120 W/(m·K); melting point approx. 900–940℃; thermal expansion coefficient approx. 19×10⁻⁶/℃.
- Biosafety: Slow release of copper ions at 0.1–0.5 mg/L; inhibits Escherichia coli, Legionella and biofilm formation.
- Electrical & electromagnetic performance: Conductivity approx. 28% IACS; outstanding grounding continuity and anti-electromagnetic interference capability.
Comprehensive Advantages
- Service life & maintenance: Service life of 30–50 years; maintenance-free or low-frequency replacement, with lower full life-cycle cost.
- Safety level: Fireproof, explosion-proof, water hammer-resistant and seismic flexible joints are well-developed. It enhances the safety redundancy of urban lifelines, suitable for gas, fire protection and emergency systems.
- Construction compatibility: Compatible with thread, push-fit and press-fit connections; controllable torque; complete BIM component library. Friendly to prefabricated and modular construction, shortening the construction period by 20%–30%.
- Pressure resistance grade: High pressure resistance, plus water hammer resistance and copper ion bacteriostasis, extends pipeline service life and reduces water leakage rate.
The Role of Brass in the Sustainable Development of Modern Cities
Brass has evolved from a traditional basic connecting material into a core carrier for sustainable development strategies in modern cities and industrial systems.
1. Environmental Sustainability
As a copper-based alloy, brass features a low melting point (approximately 900℃) and high metallurgical stability. The energy consumption for remelting recycled brass is only 15%–20% of that required for primary ore smelting, with an end-of-life recycling rate exceeding 90%. Recycled brass maintains consistent performance without degradation, enabling a high-efficiency closed-loop recycling system.
In addition, the full-life-cycle carbon emission of brass is lower than that of stainless steel and some engineering plastics, delivering superior low-carbon performance. From the perspective of modern urban sustainable development and public health, its high thermal conductivity improves the COP of heat pumps and floor heating systems, while its low flow resistance reduces water pump energy consumption by 10%–20%. Non-toxic and harmless, brass serves as a typical practical material for the urban mineral strategy.
2. Economic Sustainability
Long-service-life assets and full-lifecycle cost optimization
| Initial Cost | 20%–40% higher than plastic fittings | Based on the LCC (Life Cycle Cost) model, the total cost drops by 15%–30% over a 30-year service cycle |
| Asset Preservation | Regarded as a consumable | Possesses dual attributes of physical asset + financial value; scrap copper and brass enjoy transparent market prices with strong inflation resistance |
| Operation & Maintenance Expense | High hidden costs | Leakage rate below 0.1% and long maintenance-free cycle; reduces expenses on pipeline emergency repairs, water quality testing and part replacement frequency |
| Green Financial Compatibility | Not included in ESG accounting | Eligible for EPD (Environmental Product Declaration); high recycled content and low-carbon manufacturing support green credit and carbon asset pledge financing |
Application of Brass Fittings
Our products are mainly applied in water supply and drainage systems.
Application in Water Supply Systems
Not used for long-distance main pipelines, but focused on high-value functional nodes for pressure control, water purity maintenance, backflow prevention and easy maintenance. They serve as the first line of defense for drinking water safety and system stability.
- Building Cold & Hot Water Systems
Angle valves, water distribution valves, thermostatic mixing valves, check valves, and PPR/copper pipe transition joints.
Main functions: terminal control, cold and hot water distribution, cross-flow prevention, and compatibility of different pipe materials.
- Direct Drinking Water & Water Purification Systems
High-purity ball valves, pre-filter connectors, and terminal fine filter valve cores.
Features: zero microplastic release, antibacterial performance, high flow rate and low flow resistance.
- High-rise & Super High-rise Water Supply
Slow-closing check valves, seismic flexible joints, and water hammer arrester connections.
Functions: negative pressure prevention, water hammer impact resistance, and displacement compensation.
Application in Drainage Systems
Not designed to replace PVC or cast iron main pipes, but applied as control valves, deodorant cores, transition joints and intelligent nodes. It solves industry pain points such as easy aging of plastic pipes, corrosion of metal pipes, and difficult system regulation.
- Building Wastewater
Trap inspection openings, air vent valves, and deodorant floor drain cores.
Functions: gas isolation and deodorization, pressure balance, and convenient inspection and cleaning.
- Sponge City & Rainwater Management
Rainwater and sewage diversion, flow regulation, and backflow inundation prevention.
Company Profile
Luoyang Datang Energy Tech Co., Ltd. is a leading Chinese manufacturer specializing in high-quality plastic pipes and fittings. Equipped with state-of-the-art automated production lines and supported by a team of 200 professionals, we offer an extensive product line comprising over 150 types of plastic pipes and fittings designed for water supply and drainage systems, gas transmission, and floor heating systems. Our main products include PVC Pipes and Fittings, PE (HDPE) Pipes and Fittings, PPR Pipes and Fittings, and PEX Floor Heating Pipes.
Should you have any inquiries regarding HDPE Pipe Fitting, please do not hesitate to contact us!
Tel.:0086-183 3790 0677
Wechat: 0086-183 3790 0677
Whatsapp: 0086-183 3790 0677
Email: sales@pipesandfittings.net
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