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徐州市優固網架加工公司

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成品球

產品詳情:
  要求施工方提交制造螺栓球節點的鋼材出廠合格證、試驗報告。螺栓球宜采用***標準《優質碳素結構鋼鋼號及一般技術條件》gb699-88規定的45號鋼。
  螺栓球嚴禁有過燒、淬火裂縫及隱患。用10倍放大鏡目測。每種規格抽查5%,且不少于5只,一旦發現裂紋,則應逐個檢查。
  用標準螺紋規檢查螺栓球的螺紋尺寸。每種規格抽查5%,且不少于5只。

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欧美日韩亚洲