2019-11-12 09:59:55
  | sawchina 
 | 焊接程序不要求時(shí)焊工的鑒定考試規(guī)范-鋁及其合金的TIG或MIG BS 4872-2-1976 Specification for approval testing of welders when welding procedure approval is not required - TIG or MIG welding of aluminium and its alloys 下載地址: 
	鏈接:https://pan.baidu.com/s/14rTzyEuUllNq7pBNUTMD-A  | 
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