Lianhe Valve delivers stainless steel fittings engineered for demanding industrial environments. Our range covers threaded fittings, butt weld fittings, press fittings, and sanitary fittings, all produced with certified materials and precise machining.
From oil and gas pipelines to food-grade processing lines, we supply reliable piping components that hold up under pressure, temperature variation, and corrosive media. Each fitting is inspected before shipment to ensure dimensional accuracy and consistent performance.
Wenzhou Lianhe Valve Fitting Co., Ltd. combines research, development, production, and sales under one roof. This integrated structure allows us to control quality at every stage — from raw material selection to final packaging — and to respond quickly to custom requirements, technical questions, and delivery schedules.
Our fittings meet international standards including ISO4144, ASME B16.9, ASTM A403, DIN, and EN. Whether you need a standard part or a custom configuration, our engineering team can match the right material, connection type, and surface finish to your project.
Elbows, tees, reducers, couplings, and caps — engineered for precision, leak-proof performance, and long service life across diverse piping systems.
Easy to install and maintain, ideal for systems requiring frequent disassembly. Available in NPT, BSPT, BSP, DIN2999, and ISO228 thread types, with sizes from 1/8" to 4" and pressure ratings up to 150#.
View Range →Permanent, high-strength connections that ensure leak-free performance under pressure. Manufactured to ASME B16.9 and ASTM A403 with smooth internal surfaces for optimal flow efficiency.
View Range →Quick installation and reliable sealing without welding — ideal for water treatment, gas piping, and environmental projects. Tool-based assembly reduces labor time and eliminates open-flame risk.
View Range →Hygienic, corrosion-resistant design for food, beverage, and pharmaceutical industries. Smooth surface finishes support clean-in-place (CIP) processes and prevent product contamination.
View Range →Our threaded fittings are easy to install and maintain, ideal for systems requiring frequent disassembly. They are precisely machined with clean threads to ensure a tight, leak-resistant seal in low to medium pressure systems.
Butt weld fittings provide permanent, high-strength connections that ensure leak-free performance under pressure. The welded joint becomes as strong as the pipe itself, making these fittings suitable for high-pressure and high-temperature pipelines in oil, gas, and chemical industries.
Both types are precisely machined for smooth internal surfaces, enhancing flow efficiency and durability in long-term service.
Precise CNC machining for tight tolerances
Smooth internal surfaces for optimal flow
Suitable for frequent assembly or permanent joints
Available in 304, 316, and 316L stainless steel
Sanitary fittings are widely used in food, beverage, and pharmaceutical industries where hygiene and corrosion resistance are essential. Surface finishes are controlled to prevent bacteria buildup, and the internal geometry supports full drainability.
Press fittings enable quick installation and reliable sealing without welding, making them suitable for water treatment and environmental projects. The crimped connection is mechanically locked and tested for pressure integrity, reducing installation time and eliminating the need for hot work permits.
These fittings combine strength, corrosion resistance, and convenience to meet modern industrial demands.
Hygienic surface finish for clean applications
Tool-based assembly without open flame
Long service life in humid and corrosive environments
Compatible with standard pressing tools
Premium stainless steel grades and full international standards compliance for every fitting. The right grade selection depends on your medium, temperature, and environmental exposure.
General-purpose grade with excellent corrosion resistance for everyday industrial applications. Suitable for water, mild chemicals, and food-grade environments where chloride levels are low.
Enhanced resistance to chloride and marine environments — ideal for chemical and coastal systems. Molybdenum content improves pitting resistance in aggressive media.
Low-carbon grade with superior weldability, suited to high-purity and sanitary piping. Reduces carbide precipitation during welding and supports corrosion resistance after fabrication.
ISO4144, ASME B16.9, ASTM A403, DIN and EN standards with ISO, CE, and EAC certification. Full material traceability and dimensional compliance across all production runs.
Trusted across critical industries where corrosion resistance and mechanical strength are essential for safe, long-term operation.
High-pressure piping systems for upstream and downstream operations. Fittings must withstand vibration, pressure cycling, and exposure to hydrocarbons.
Corrosion-resistant fittings for aggressive media and process lines. Material grade and surface finish are selected based on the specific chemical environment.
Hygienic fittings designed for cleanliness and product purity. Smooth internal surfaces and crevice-free joints help meet food safety requirements.
Durable connections for potable water, wastewater, and environmental systems. Corrosion resistance extends service life in humid and buried conditions.
Integrated manufacturing, certified production, and reliable global supply — backed by responsive technical support.
In-house research, design, and manufacturing for consistent quality control. Design changes and custom requirements can be handled without external delays.
ISO, CE, and EAC certified production with full traceability. Each batch is inspected for dimensions, surface quality, and material composition.
Compliant with ASME, ASTM, and DIN norms for global compatibility. This ensures our fittings integrate smoothly with internationally sourced piping.
Wide product range, large inventory, and global supply network. Standard items ship quickly, and custom orders follow a clearly communicated schedule.
Selecting the right fitting depends on system pressure, temperature, and medium. Choose the connection type — threaded, welded, or press — based on installation and maintenance needs, then match the material grade to the environment.
| Selection Factor | Recommendation |
|---|---|
| Pressure Level | Use butt weld fittings for high-pressure systems; threaded or press connections are better suited to low and medium pressure lines. |
| Medium Type | Choose 316 / 316L for corrosive or marine environments; 304 is adequate for water, air, and mild chemical service. |
| Installation Speed | Opt for press fittings for fast, tool-based assembly; threaded connections allow easy disassembly for maintenance. |
| Hygienic Requirement | Select sanitary fittings for food and pharmaceutical use where cleanability and surface finish are critical. |
| Temperature Range | Confirm the operating temperature against the selected grade and connection type, especially for steam or thermal process lines. |
As a dependable stainless steel fitting supplier, Lianhe Valve welcomes global customers to discuss custom or bulk orders. Our team provides technical support, quotations, and prompt service for all industrial piping needs. Share your specifications and we will recommend the right fitting for your application.
Contact Us TodayWe offer threaded fittings, butt weld fittings, press fittings, and sanitary fittings, along with elbows, tees, reducers, couplings, and caps. Sizes range from 1/8" to 8" depending on the connection type. See the full range on our products page.
They are widely used in oil and gas, chemical processing, food and beverage, construction, and water treatment industries. The choice of material and connection type depends on the medium, pressure, and hygiene requirements of each application.
316 offers enhanced corrosion resistance, especially for marine or chemical environments, while 304 is ideal for general applications. If your system handles chlorides, seawater, or aggressive chemicals, 316 or 316L is usually the safer choice. Read our 304 vs 316 guide for details.
Yes, all Lianhe Valve fittings comply with ISO, ASME, ASTM, DIN, and EN standards. Our production is ISO, CE, and EAC certified, and material certificates can be provided on request for qualified projects.
Absolutely. We provide custom designs and specifications to meet unique project requirements, including non-standard sizes, special thread types, and specific surface finishes. Contact us via the inquiry page to discuss your requirements.
