65mm Wall Thickness carbon seamless steel pipe 1. WT: 10-80mm, OD:273-426mm 2. Certificate: API, ISO, KR 3. Market:worldwide 65mm Wall Thickness carbon seamless steel pipe Key wordsSteel PipeNameCarbon Seamless Steel PipeSize273-426mmThickness10-80mmLengthlength: 5-12mStandardASME B36. 10M-1996,API 5LJIS G3461, JIS G3456, J IS G3452,JIS G3454,JIS G3455,JIS G3457,DIN 2448,DIN1626,DIN17175, ...