WORLD STEEL ASIA LTD (WDSS) Stainless Products stocks stainless steel Seamless pipe per ASTM A312/ A213 in 304/304L, 316/316L, 304H, 316H, 309S, 310S, 317L, 321/H, 347H, 904L, 316Ti, 253MA, 254SMO, 410. In duplex steel grades, we can supply S31803/2205 and 2507. Some nickel grades are also supplied. also food stainless steel pipe. We supply a full range of pipe schedules ranging from Sch5S,SCH10S,SCH40S,SCH80S,SCH160,SCHXXS. Most products are available in 20″ random length sections, but we also can Product exceeding 40″ length.