焊接性研究
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The contents of research include: Make the weld property test for the X60 pipeline steel, as a result from it that is temperature before starting weld to prevent delay crack;
其研究内容包括：对X60管线钢进行了焊接性实验，得出野外焊接施工初始温度，从而预防冷裂纹的产生；
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