Products

Stainless Steel Flange Wholesale in Stock

As a professional China flange manufacturer and one-stop pipeline supporting supplier, Diye Valve relies on its own large-scale production factory to specialize in manufacturing various high-precision industrial flanges. Our flanges are perfectly matched with our core valves, pipe fittings and filters, forming a complete fluid pipeline connection solution. We provide a complete range of flanges, covering mainstream types such as plate flat welding flanges, neck flat welding flanges, neck butt welding flanges, blind flanges, socket welding flanges and lap joint flanges, with a full coverage of nominal diameters and pressure ratings.All flanges are produced in strict compliance with authoritative domestic and international standards including GB, ANSI, DIN, JIS and GOST, featuring precise dimensions and excellent sealing performance to achieve seamless connection with various pipelines, valves and equipment.


Implementation Standards for Stainless Steel Flanges

Relying on the standardized production system of a professional China manufacturer and the standardized control process of Diye Valve’s own factory, as a high-quality pipeline accessory supplier in the industry, Diye stainless steel flanges strictly implement a number of domestic and international general standards, meeting the application specifications of different projects and regions with strong versatility.


Our products fully comply with mainstream standards including Chinese GB, American ANSI, Japanese JIS, German DIN and Russian GOST. Every parameter, from dimensional tolerance, sealing face type and pressure rating to material composition, meets the standard requirements. Our stainless steel flanges are perfectly suitable for various domestic municipal and industrial projects, and also meet the standard requirements for overseas export.


Selected High-Quality Stainless Steel Materials for Harsh Working Conditions

As a formal China pipeline accessory manufacturer and high-quality flange supplier, Diye Valve deeply understands that material is the core of stainless steel flanges. Our own high-standard production factory strictly selects food-grade and industrial-grade high-quality stainless steel raw materials, rejecting inferior and adulterated materials. We launch diversified material models for different working conditions, with outstanding corrosion resistance and durability.


Material Selection

We adopt 304 stainless steel for conventional corrosion-resistant scenarios, which is rust-proof and resistant to weak acids and alkalis, suitable for water supply and drainage, HVAC and general chemical engineering; 316L stainless steel is used for highly corrosive and hygienic scenarios, featuring resistance to strong acids and alkalis and no impurity precipitation, ideal for food and pharmaceutical, seawater transportation and fine chemical industries; 321, 310S special stainless steel is available for special high-temperature working conditions.


Diye Factory controls the entire process of material traceability and testing. As a professional manufacturer, we ensure material compliance; as a reliable Chinese supplier, we provide customers with material certificates to ensure that our products adapt to corresponding corrosion, temperature and pressure working conditions, and operate stably without rust for a long time.

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ANSI B16.5 Weld Neck Flange

ANSI B16.5 Weld Neck Flange

DIYE VALVE, a professional manufacturer in China, specializes in producing high-performance ANSI B16.5 Weld Neck Flanges. As a reliable supplier with integrated factory capacity, we strictly adhere to the ASME B16.5/B16.47 American standard system throughout the forging and precision machining process. Our weld neck flanges are the preferred choice for critical high-pressure, high-temperature piping systems, providing unparalleled structural integrity and sealing reliability.
Socket Welding Flange

Socket Welding Flange

As a professional manufacturer and exporter headquartered in China, DIYE VALVE specializes in producing a full range of Socket Welding Flanges, strictly adhering to ASME B16.5 US standards, GB national standards, and customized technical requirements. As a trusted supplier for global industrial projects, our factory uses high-quality forging materials such as 304/316L stainless steel, employing precision forging and CNC machining processes to ensure excellent dimensional accuracy, stable welding positioning, and reliable performance under high pressure and high temperature conditions.
Slip-On Welding Flange

Slip-On Welding Flange

DIYE VALVE is a professional Chinese flange manufacturer and exporter. As a trustworthy supplier, we own our own factory and a rigorous quality control system. We strictly adhere to ASME B16.5 standards (applicable to NPS 1/2″–24″ standard flanges), while large-diameter flanges conform to ASME B16.47 standards. Our gaskets, bolts, and materials all comply with American ASTM standards, laying a solid foundation for the reliability and compatibility of our Slip-On Welding Flanges.
GOST 12820-80 Flange

GOST 12820-80 Flange

DIYE VALVE is a reliable manufacturer and exporter specializing in GOST standard flanges. Based in China, we possess advanced production equipment and a rigorous quality control system. Having cultivated the Russian, CIS, and Central Asian markets for many years, we are proficient in the technical essence and application requirements of the GOST 12820-80 Flange and GOST 33259-2015 flange standards, making us a trusted supplier for pipeline engineering projects worldwide. Our factory professionally and precisely manufactures medium and low-pressure steel slip-on flanges, fully conforming to GOST standards in terms of dimensions, materials, and testing specifications, providing one-stop solutions for industrial and municipal pipeline systems.
Stainless Steel Blind Flange

Stainless Steel Blind Flange

DIYE VALVE specializes in stainless steel blind flanges (abbreviated as BL), core fully-sealed plugging fittings without a through bore in the stainless steel flange range. As a professional China enterprise, we adopt high-quality stainless steel base material, combined with forging, precision machining and anti-corrosion treatment to ensure stable product performance.
Stainless Steel Plate Flange

Stainless Steel Plate Flange

DIYE VALVE is a professional China brand dedicated to high-quality stainless steel plate flanges. The manufacturing processes of Made-in-China stainless steel plate flanges directly determine their dimensional accuracy, mechanical strength, sealing performance and working condition adaptability.
Gost Flange

Gost Flange

DIYE VALVE is a professional China-based manufacturer dedicated to producing Gost Flange. All our products are manufactured in strict compliance with the Russian National Standards (GOST), serving as core stainless steel fittings for pipe connections that are exclusively engineered to suit the industrial operating conditions in Russia and the Commonwealth of Independent States (CIS).
DIN Flange

DIN Flange

DIYE VALVE is a professional China manufacturer dedicated to high-quality pipe connection solutions. Our DIN flanges are precision-manufactured stainless steel pipe connection fittings complying with German industrial standards.
DIYE Valve is a professional Stainless Steel Flange manufacturer and supplier in China. We have an experienced sales team, professional technicians, and an after-sales service team.
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