sigh007 发表于 2012-3-21 19:16:59

MIL-W-41B (AMENDMENT 1)


                   MIL-W-41B (AMENDMENT 1), MILITARY SPECIFICATION: WELDING OF ARMOR, METAL-ARC, MANUAL, WITH AUSTENITIC ELECTRODES; FOR AIRCRAFT (14 NOV 1955) .         
         
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