High quality seamless steel pipe for oil field 1. Factory sell 2. OD: 10-630mm 3. ASTM,DIN ... 12Cr1MoVG, J55,K55,N80,P110,T1,T5,T11,T22,T23,and so onThird party inspectionBV, SGS, Lloyds TUVPackageIn bundle with strips ... discussingShipment20-30days for an order less than 1000 tonsSurface treatmentBlack paint, yellow/transparent an-ti rust oil, galvanizedUsagePetroleum, chemical, power, gas, industrial, ...