... , vapor, steam etc. 3) Temperature: -29C - 425C (WCB), -196C - 600C (SS), -570-570(alloy steel) 2) Pressure: Class150 - 300LB 1) Size ... , vapor, steam etc. 3) Temperature: -29C - 425C (WCB), -196C - 600C (SS), -570-570(alloy steel) 2) Pressure: Class150 - 300LB 1) Size ... , vapor, steam etc. 3) Temperature: -29C - 425C (WCB), -196C - 600C (SS), -570-570(alloy steel) 2) Pressure: Class150 - 300LB 1) Size ...