Welded pipes for mechanical/ornamental/boiler/heat exchange/sanitary use Available specification: astm a312, jis g3459, astm a554, jis g3446, astm a249, Astm a269 , jis g3463, astm a270, jis g3447 Steel grade:304 , 304 l , 316, 316l, 321 Available dimension: I )thickness from 0.4mm to 8 mm Ii )out diameter from 13.2mm to 500mm Sea worthy packing