长输油气管道常见焊接缺陷及预防

以西部原油、成品油管道工程为例，分析了长输油气管道焊接时常见的焊接缺陷，如气孔、夹渣、未熔合、未焊透等。指出，由于焊接缺陷形成的原因较多，因此在长输油气管道焊接施工中，应综合考虑管径、壁厚、钢级以及管线沿途的地形、地貌等具体情况，充分考虑可能出现的焊接缺陷，采取相应的预防措施，保证焊接质量。

Common Welding Defects and Preventive Measures in Oil & Gas Pipeline of Long Distance

Common welding defects in oil & gas pipeline of long distance such as blowhole,cinder inclusion,incomplete fusion and incomplete penetration are analyzed by taking western pipeline project of crude oil and finished-product oil as an example.A lot of reasons for welding defect are pointed out,so a lot of concrete circumstance such as pipe diameter,pipe thickness,steel grade,topography feature along the pipeline route and possible welding defects should be synthetically considered. Relevant preventive measures should be carried out to ensure welding quality.