... of the leading concrete pump spare parts manufactures in ChinaInculd:Pipe Factory ,Casting Factory ,Wear Plate Factory ,Rubber Hose FactoryPipe ... Middle East countries, we have a 60% market share, ST52 Pipe: is very popular in Saudia,Jordan,Iran,Chile,Kuwait,etc ... equipment,becasue in the Middle East Countries very like ST52 pipe ,so Our pipe facotry use best kind flange ,and best Electrode wearTwin ...