We are offering carbon steel ibr buttweld fittings. size : 18"nb to 48"nb inschedule: sch20, sch30, sch40, std, sch80, xs, sch60, sch80, sch120, sch140, sch160, xxstype : seamless erw welded fabricatedform : elbow, tee, reducer, cap, stubend, bends, nipple etc. materials : carbon steel ibr buttweld fittings cs ibr buttweld fittingsastm a234 wpb test certificate :ibr test certificate form iiic.