alloy steel vertical casting tube 1.Standard:ASME,ASTM,ANSI,DIN,GB 2.Material:alloy 3.ISO9001:2008 ,Used ... fertilizer industry alloy steel vertical casting tube1.Standard:ASME,ANSI,ASTM,DIN,GB2.Material:Alloy3.Specifications: ERW/CW steel pipe to ... ASTM A53 Grade A/Grade B4.Size: 1/8” through 20”, supply standard ...