sigh007 发表于 2012-3-24 11:13:50

MIL-T-6736B


                   MIL-T-6736B, MILITARY SPECIFICATION, TUBING, CHROME-MOLYBDENUM, 4130 STEEL, SEAMLESS AND WELDED, AIRCRAFT QUALITY (3 MAY 1965) ., This specification covers chromium-molybdenum (4130) seamless and welded steel tubing of aircraft quality.         
         
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