Cast Iron Pipe Fitting Hydraulic Quick Coupler Thread1.standard: BS, DIN ,NPT 2.ISO CIQ SGS 3. ... over, round caps etc.Cast Iron Pipe Fitting Hydraulic Quick Coupler:Product ItemMalleable iron pipe fittings: elbows, tees, sockets, bends, nipples ... team, gas, oil, air Cast Iron Pipe Fitting Hydraulic Quick Coupler Thread