Hebei HNK I/E Co.,ltd is specialized on import and export business on hardware, especially plumbing products. Our main products include malleable iron pipe fittings. steel but-welding fittings. steel nipples and sockets. forged flanges. various kinds of valves including stainless steel ball valves. gate valves. butterfly valves. check valves. gl …?a href="Eguanyu.asp?id=40">More>>