Alloy Steel Pipe SA 335 – A 335 IIn the process heating like boiler chemical industries paper, if the temperature exceeds 450 Deg c and with in 550 Deg c. then boiler quality alloy steel can be efficiently used for headers, risers, main steam lines etc. ASME specifies a set of Alloy Steel pipe specifications Which can be welded - Welding rod Specification is : E.8018.