... 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 ... butt-welding fittingsstainless steel butt-welding fittingsforged fittingsbutt-welding fittings are produced according to ANSI B16.9,DIN2605, ... 304/304L 316/316LSIZE: seamless 1/2"--48" welded 1/2"--88"forged fittings from 1/8" to 4",threaded ...