material ASTM A148 90-60 Weight 15tons machining and UT MT check Efficiency: Annual output of more than 10,000 tons of steel-castingMain Product: We can manufacture carbon steel, alloy steel, high alloy steel, stainless steel, cast steel as per the Standard GB,JB,CB,ZB,JIS,ASTM,SAE,DIN or special requirements from Customers.1) Chain wheel, gear wheel, sheave, idler wheel, platen, winding drum, ...