... standard,made of the raw materials of ASTM A105,A182,ST37.2,C22.8,ASTM A694,JIS G3101 SS41,etc.size:1 ... /2"--68"suitable for steam, water, gas,oil and other liquids pipe linesseamless ... WPB,ST37.0,ST35.8,SUS403,WPHY46/52,ASTM A403 304/304L 316/316LSIZE: seamless 1/2"--48" welded 1/ ... standard suitable for steam, water, gas,oil,and other liquids pipe lines