材质
CARBON STEEL: ASTM A234 WPB, WPC; ASTM A420 WPL9, WPL3, WPL6, WPHY-42, WPHY-46, WPHY-52, WPHY-60, WPHY-65, WPHY-70,
ALLOY STEEL: ASTM A234 WP1, WP11, WP12, WP22, WP5, WP9, WP91
STAINLESS STEEL: ASTM A403 WP304/304L, WP316/316L, WP321, WP347
型号
Carbon Steel: From ?" up to 96"
Stainless Steel (Seamless): From ? up to 24"
Stainless Steel (Welded): From 26" up to 72"