Standards: asme en din jis and other standards Dimensions: seamless size: 1/2"¡«24" (dn15¡«dn600) Welding size: 4"¡«78" (dn150¡«dn2000) Wall thickness: sch5, sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100, Sch120, sch140, sch160, xxs, sch5s, sch10s, sch40s, sch80s Materials: carbon steel, stainless steel, alloy steel