... pipe 2.Grade : ss 304-316L 3.Standard : API .ASTM.DIN .GB.BS 4.Size :OD6~630*WT1.5~30 ... 30)*(MAX.12,000MM),NPS1/8"-20"*SCH5-1606. standards:astm a312,astm a213,gost,jis,din,bs7. package:bundles or knitting ... Test and so on.accurate aluminium alloy steel pipeO.DO.D toleranceW.TThickness Tolerance5-762mm±0.030.25-75mm±0. ... protectedMOQ20tonTermT/T, FOB, CIF, CFR seamless alloy steel pipe astm a335