D.高張力螺栓鎖緊度檢驗: 1.高張力 螺栓安裝前應以目視檢查接合面是否合乎規定,並於檢視後維持檢視 ... 關於常見的螺栓規格,請看: http://www.engineersedge.com/hex_bolt_identification.htm http://www.boltdepot.com/fastener-information/Bolt-Grade-Chart ...
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