in fields of electromechanical, metallurgical, shipbuilding, light& heavy machinery casting etc. ... -resistant steel series(4) Precision castings3.The products are used widely in fields of electromechanical, metallurgical, shipbuilding, light& heavy machinery casting, rubber ... .4.Our advantages:(1) Arbitrary choice of thickness of the pipes(2) Arbitrary choice of adding any material(3) Increase thermal ...