About this product

JIS G3444 carbon steel pipes are available in grades like STK290, STK400, STK490, STK500, and STK540, with numbers indicating minimum tensile strength. They range in outer diameter from 1/2" to 20", thickness from 2.0 to 9.3 mm, and are offered in lengths of 6M, 12M, or customized, with plain or beveled ends and black, varnished, or galvanized surfaces.