... service 2) Supply machining service 3)Big capacity 500ton/month Pump impeller Wealth of experience, good quality, reasonable price! ... Thanks for you browse our products. Tolerance of our pump impeller products can be achieved to +/-0.01mm 1) ... machine, bench drill machine,normal lathe, line cutter etc.6) Testing equipment (foundry used): elongation tester, hardness tester, metallographic microscope, ...