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.












