Steel Tubes manufacture standard: JIS, GB,DIN,ASTM,EN,AISI welded tubes 201/202/304/430/409L/316L Steel TubesManufacture Standard:JIS, GB, ... standard: ASTM A554Usage: construction , industry materials and so on.High quality, competitive price and fast delivery.Packing: Every ... sleeved in plastic bag individually, and then several tubes are packed by weaving bag, which is seaworthy 304 Steel Tubes