... four tees 2.sand mould making 3.carbon steel 4.tube 5.MT UT Efficiency: Annual output of more than 10 ... the Standard GB,JB,CB,ZB,JIS,ASTM,SAE,DIN or special requirements from Customers.1) Chain wheel, gear wheel, sheave, idler ... declared NK,DNV,BV,ABS,CCS,Germany classification society attestation. tube body