... , alloy steel, high alloy steel, stainless steel, cast steel as per the Standard GB,JB,CB,ZB, ... ,DIN or special requirements from Customers.1) Chain wheel, gear wheel, sheave, idler wheel, platen, winding drum, helm ... body, valve body etc. for petrochemical industry working.(5) Gear, Bull Gear, axial seat, big shaft, block, module etc.(6) ... ,BV,ABS,CCS,Germany classification society attestation. Cast Gear