Malleable Iron Pipe Fitting Steel Nipples 1.Size:1/8-6" 2.StandardBS, ... :Beaded,Banded,Plain Itemelbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts,crosses over, round caps, etc. Size1/8''-6'' Thread ... pressure test machine,Electric Annealing Furnace CertificateISO9001 UsageSuitable for joining pipe lines convey steam, gas, oil, air