... ,SAE,DIN or special requirements from Customers.1) Chain wheel, gear wheel, sheave, idler wheel, platen, winding drum, helm seat etc. for deck ... seat, big shaft, block, module etc.(6) Fire grate car, carrier wheel, driving chain, chain wheel etc. for mine metallurgical engineering .(7) Support ... NK,DNV,BV,ABS,CCS,Germany classification society attestation. Gear wheel