... ---5.5tons 3. Sand mould making 4.MT,UT check material: carbon steelapproved by class societyEfficiency: Annual output of more than ... special requirements from Customers.1) Chain wheel, gear wheel, sheave, idler wheel, platen, winding drum, helm seat etc. for deck machining ... NK,DNV,BV,ABS,CCS,GL,Germany classification society attestation. idler gear