Size : ID 1" to 56" Material : AISI 304,AISI 321,AISI 316L Standard : EJMA 2008 Certificate: ISO 9001 1. Size : ID 1"to 56"2. material : AISI304,AISI316L,AISI 321, Inconel 6253. Operating Temperature: -4F to + 842F4. Testing Dimension Test Visual Test Air tightness Test Non destructive Test Pressure Test Material Certificate5. Standard : EJMA 2008 6.Certificate: ISO 9001:2008Founded in 1999, ...