... welcome customized designs6.product name :pipe fittingMaterial:Grey iron, ductile iron, malleable iron, stainless steel, etc.Material Standards:GB.ASTM. ... 90KG Tolerance :CT7 Grade Details: Material Grey iron,ductile iron,malleable iron,stainless steel, carbon steel,aluminium,brass etc. ... customers requirementsProcess:Huangshan Amethyst Casting Industry Co.; Ltd Resin-bonded sand casting iron parts