Size:1/2'' - 48'' Standard: API 5L, ASTM A106/A53, JIS G3456/3461 , DIN1626/1629/17175 ... .0 ,11.8 , 12.0m. Unfixed: 5-12mStandardASTM A53,A106,API 5L,ASME B36.10M-1996DIN1626,DIN1629,DIN17175JIS G3452,JIS G3454 ... ,JIS G3455,JIS G3456,JIS G3457,JIS G3461MaterialA53B, A106B, API 5L B,X42,X46,X52,X60, X65, X70,X80,Q235ST37 ...