Specialized Acid Resistance: Cast from CN7M (Alloy 20), providing exceptional resistance to hot sulfuric acid, as well as phosphoric and nitric acids.
Intergranular Corrosion Protection: Specifically stabilized with Niobium to minimize carbide precipitation during welding, ensuring long-term structural integrity.
National Standard Compliance: Manufactured to GB/T specifications, guaranteeing precise flange dimensions and wall thickness for high-stakes chemical pipelines.
Bubble-Tight Isolation: The perpendicular gate motion combined with precision-machined CN7M seats ensures a reliable, leak-proof seal against hazardous media.
Rugged Construction: Designed for “maximum service life” in environments where standard stainless steel (316L) would fail within months.
DESCRIPTION
Material Specifications
Component
Material Specification
Body / Bonnet
ASTM A351 CN7M (Alloy 20)
Design Standard
GB/T 12234 / ANSI B16.34
Connection
National Standard Flange (GB/T 9113)
Ideal Media
20%–40% Sulfuric Acid, Chemicals, Food Processing
Primary Applications
Chemical Production: Sulfuric acid pickling lines and chemical synthesis.
Pharmaceutical: Handling of high-purity organic and inorganic acids.
Food & Beverage: Processing of fatty acids and highly corrosive cleaning agents.
