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