防腐过程中钢管管端复合坡口的保护

针对管端单坡口形式在高钢级、大直径、大壁厚管道施工过程中容易造成钢管对接焊缝产生缺陷的问题,提出了管端复合坡口形式,指出了复合坡口形式在管道施工中能够有效解决大壁厚钢管现场对接施工中出现的夹渣、未焊透等缺陷.总结了管端复合坡口钢管在防腐生产中可能受到损伤的原因,并针对这些不利因素提出了相应的防治措施.

The Compound Bevel of Steel Pipe Protection in Anticorrosive Process

The single-bevel type on pipe end will easily cause defects in steel pipe with high grade,large diameter and heavy wall thickness butt-welding during pipeline construction,so the compound bevel was put forward.It pointed out that compound bevel can effectively solve some defects,such as slag,lack of penetration and so on.It summarized the reasons of damaged compound bevel,with regard to these negative factors,proposed corresponding preventive measures.