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来源：百度知道 编辑：UC知道 时间：2024/05/23 15:03:34
welding procedure
preheat 50° before welding (or tacking)
weld using class 6type electrodes to BS 1719
root runs to be magnetically crack detected using dry powder (without loss of preheat)
root underbead must have good profile with no undercut
welder to be approved to BS4871 or equivalent
weld to be magnetically crack detected on completion
no modifications must be made to the specified weld preparation without written approval
preheat 50° before welding (or tacking)
weld using class 6type electrodes to BS 1719
root runs to be magnetically crack detected using dry powder (without loss of preheat)
root underbead must have good profile with no undercut
welder to be approved to BS4871 or equivalent
weld to be magnetically crack detected on completion
no modifications must be made to the specified weld preparation without written approval
焊接预热50°焊接前(或跟踪)焊接用阶级6type电极bs1719根挤提会 磁裂纹检测干粉(无损失预热)根underbead必须有良好的形象,并没有削弱焊工 被批准bs4871或同等学历焊缝将磁裂纹检测完成没有必须要进行修改 在指定的焊接准备的书面许可