... countries, we have a 60% market share, ST52 Pipe: is very popular in Saudia,Jordan,Iran,Chile,Kuwait ... ,etc Country,Every month ,we export Concrete Pipe about 6000Pipes,The company now has superb technology, ... in the Middle East Countries very like ST52 pipe ,so Our pipe facotry use best kind flange ,and best ... is for 100.000M3 ST52 DN125 Concrete Pump Pipe With 148mm Metric Flange