1.name:carbon steel elbow 2.standard:ASME,GB,DIN,JIS,GOST 3.LR,SR 4.certification:API, ... qualified products,favorable price and considerate services.NAMEElbowsPRODUCTSAmerican standard, Japanese standard, German standard pipe fittings, seamless steel pipe, flange, etc.MATERIALCarbon ... according to materials appointed by consumers.STANDARDANSI,ASME,API5L,DIN,JIS,BS,GBwe can also produce according to ...