material:carbon steel , stainless steel, alloy steel, some special size:1/2"-100" wall thickness:sch5-sch160, XS,XXS,STD ITEMelbow 90, wlbow 45, equal tee, reducer tee, bends, concentric reducer, eccectric reducer, caps, stub end MATERIALcarbon steel , stainless steel, alloy steel, some special STANDARDANSI, ASME, API 5L, DIN, JIS, BS, GB, or produce according to drawingsWALL THICKNESSsch5-sch160 ...