Cobalt based alloy and overlay welding for valve
wang de quan; hu yi jun 2; li jie 3(1 shenyang valve research institute; shenyang 110025; china; 2 navy arming department shenyang military affairs representative bureau; shenyang 110000; china; 3 military representative department for forming complete sets of naval ships and boats in shenyang area; shenyang 110025; china)
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