washing pipe 1.interhcangeable 2.in stock 3.manufactured according to ... ,mud pump pistons,triplex signal action pistons,piston rods and clamps,pony rods,threaded rings and caps,value guides,liner packing ... pump parts,triplex pump spares and triplex mud pump,piston rods,gland brass and junk rings,full open valves and ... ,JWSELLIS WILLIAMS :W-440-LP,WILSON600,PPWH. API washing pipe used in Mud Pump Parts