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National standard cast steel gate valves are valves designed and manufactured according to Chinese national standards (GB/T, JB, etc.), mainly used to cut off or regulate fluid media in pipelines. They use cast steel (WCB, WC6, etc.) valve bodies and are suitable for high temperature, high pressure, and corrosive conditions, and are widely used in petroleum, chemical, power, and metallurgical industries.
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Product Features
Rust Prevention
The inner layer of the valve's outer surface is coated with a water-based anti-rust primer, and the outer layer is coated with a two-component water-based topcoat, preventing corrosion and rust.
High Temperature Resistance
The casting is made of WCB material, the sealing element is made of graphite + stainless steel, and the sealing area is made of hard stainless steel, capable of withstanding temperatures up to 425℃.
Optimized Design
The stem is made of 12Cr13, and the stem nut uses lubricated brass. A bearing is installed between the nut and the bracket, giving the valve excellent wear resistance and reducing torque.
Rigorous Testing
Our chemical gate valves meet API 598 testing requirements.
Leakage Prevention
The sealing surface is overlaid with hard stainless steel, with high machining precision and a sealing surface roughness of Ra0.4, ensuring zero leakage.
Strict Standards
Wall thickness, structural design, stem diameter, and sealing performance all meet API standards.
Product Advantages
Product Parameters
production line
Packaging and transportation
Application scenario
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