... as per the Standard GB,JB,CB,ZB,JIS,ASTM,SAE,DIN or special requirements from Customers.1) Chain wheel, gear wheel ... Pump body, valve body etc. for petrochemical industry working.(5) Gear, Bull Gear, axial seat, big shaft, block, module etc.(6) Fire ... wheel etc. for mine metallurgical engineering .(7) Support of bridge applies to bridgework .The product sells to: Domestic, Japan, America, Korea, ...