1)347 steel pipe 2)Superior quality with low prices and speedy delivery 347 Steel Pipe 1)ASTM A106/A53-B API5L-B 2)OD:34-406mm WT:2-80mm3)ISO& API,BV, etc.4) Specification: OD :3/8”-20” WT:SCH5-SCH40-SCH80-SCH160-XXS 5) Standard :ASTM A106-B ASTM A53-B API 5L-BAPI 5L, X42, X52, and 5CT ,J55 ,K55SAE1020 ,SAE1045 JIS G4051, S20C ,S45C, JIS G3454, JIS 3454 ,STPG42 DIN 17175 ST 45-8, ST 52 (5) ...