女高中生高潮娇喘喷水视频

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KN-945-O高鉻鑄鐵型藥芯明弧焊絲

更新:2017-1-1 20:42:56點擊:
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KN-945-O高鉻鑄鐵型藥芯焊絲
  高鉻鑄鐵型藥芯焊絲碳和合金元素的含量高,耐沖擊性較差,但具有優良的耐磨粒磨損性能,還有一定的抗氧化性及耐輕微的腐蝕性。焊層具有橫向裂紋是釋放內應力和防止大面積剝落需要的。焊絲焊接性能優良,電弧穩定、焊道成型美觀、應力釋放均勻,使用壽命延長。
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女高中生高潮娇喘喷水视频
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