1) Description:hexagonal nut, 2) Type:DIN934,ANSI/ASME,BS,AS 3 ... D25mm to D820mm 4, Pipe fitting made of steel plate from D630mm to D3320mm 5, Socket welding ... company that specialized in producing and exporting top high quality pipe fittings Being an ISO 9001:2000 and ... we feature durability, regular and consistent supply of quality and high performance in our products..Our factory located in ...