JIS Standard Flange

JIS steel flanges are pipe flanges manufactured from steel in accordance with Japanese Industrial Standards (JIS, e.g., JIS B2220), designed for reliable pipeline connection and pressure-resistant sealing. Key characteristics, specifications, and details are as follows: – Core Function : Connects two pipes with a tight, pressure-resistant seal, ensuring leak-proof fluid/gas transmission in industrial systems. – Material Scope : Carbon steel, stainless steel (e.g., 304L, 316L, duplex grades), alloy steel (compliant with JIS material standards, balancing mechanical strength, durability, and corrosion resistance). – Key Specifications : – Size Range: 15A – 1500A (JIS nominal pipe size, equivalent to DN15 – DN1500); – Pressure Class: 5K – 63K (JIS pressure rating, covering low to high-pressure pipeline requirements). – Joint Configurations : Slip-on flange (SO), threaded flange (TH), weld-neck flange (WN), and other standard types (selected based on installation requirements, pressure levels, and maintenance needs). – Core Advantages : High durability, excellent corrosion resistance, reliable pressure-bearing sealing, and compatibility with Japanese/East Asian industrial equipment-suitable for harsh operating environments (e.g., high temperature, humidity, chemical corrosion). – Application Scope : Widely used in industrial and commercial scenarios, including power plants, chemical plants, water works, oil & gas facilities, and manufacturing industries requiring standardized pipeline connections.