*Thickness:SCH10,SCH20,SCH30,STD,SCH40, SCH60,XS,SCH80,SCH100,SCH120,SCH140,SCH160,XXS,DIN,JIS standard thickness
*Standard:ASTM A53,A106,API 5L,ASME B36.10M-1996,DIN1626,DIN1629,DIN17175,DIN 2448,JIS G3452,JIS G3454,JIS G3455,JIS G3456,JIS G3457,JIS G3461