1.Specification:SSAW steel pipe line pipe 2.Size: from 219" to 2420", 3.Wall Thickness: from ... A179, ASTM A192 ASTM SA179,SA192,BS3059Seamless Steel Tubes for high pressure --Chemical fertilizer equipmentGB6479-8610, 20G, Q345, Q390, 10MoVNb, 12CrMo ... G3441-1988 1.Specification: API 5L GR.B SSAW steel pipe line pipe ,2.Size: from 219" to 2420", 3.Wall Thickness: from ...