请大家帮忙翻一句话? the application of insulation shall not begin prior to pressure test. if written permission is given by construction manager to commence insulation work prior to pressure testing, all welds, threads, unions, and flanges shall be left uncovered until such test is completed 通常先试压后保温。即便有施工经理的书面同意可先保温,也仍需确保所有的焊缝、螺纹、活结头和法兰先试压后保温。查看更多