1. Standard: ANSI,JIS,DIN,GB,HG. 2. Certificate: ISO 9001 3. Advantages: professional, durable 4. Material: stainless steel ITERMSDESCRIPTIONFlange TypeThSize1/2''-6''PressureCLASS150-CLASS2500Seal SurfaceRF, FM/M, T/G, FFStandardASME,GB,ANSI,JIS,DIN,BSApplication FieldsWidely used in many fields, such as papers, ship-building, petrol, chemistry, electricity, gas, sewage, architecture and other ...