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【Q235D钢板】热镀锌方管也称焊管

球探网下载 BIANJI:admin    LIULANCISHU:CI     GENGXINSHIJIAN:2019-08-22 11:19

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(三)滚槽机滚压成型的沟槽应相符下列要求:1、管端至沟槽段的外面应平整无凹凸、无滚痕。2、沟槽圆心应与管壁齐心,沟槽宽度、深度应相符要求,并反省卡箍件型号是否精确。3、在橡胶密中科院将以习近平新期间中国特色社会主义思惟为指引封圈上涂抹润滑剂并反省橡胶密封圈是否有损,润滑剂不得采纳油润滑剂。

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