... approved 1/2" to 72" SCH5S TO SCH160, XXS ASTM, JIS, DIN Standard The most competitive prices NameS304 STAINLESS STEEL SEAMLESS PIPESSize1/8 ... , WP8, and WP91 Stainless Steel Butt Welding Pipe fitting:ASME A403 WP304,304L,316,316L, 319, 310S, 321, 321H S304 Stainless Steel Seamless Pipes