1.Diameter:7mm~230mm 2.Length:300mm~6000mm 3.Material:GR1,Gr2,GR5,GR12 4.Standard:ASTM B348,ASTM F136,ASTM F67 Specifications1.Diameter:7mm~230mm 2.Length:300mm~6000mm 3.Material:GR1,Gr2,GR5,GR12 4.Standard:ASTM B348,ASTM F136,ASTM F67 5.Shape:roundDiameter : 7mm~230mm Length : 300mm~6000mmMaterial : GR1,GR2,GR3,GR4,GR5,GR7,GR9,GR12,TA1,TA2,TA3,TC4,TA10,TA18Standard : ASTM B348,ASTM F136,ASTM F67 ...