Full welding of the ball valve body can be directly buried in the ground, so that in case the valve from erosion, the maximum service life of up to 30 years, oil, natural gas pipeline valve ideal.
全焊接阀体的球阀，可以直埋于地下，使阀门内件不受侵蚀，最高使用寿命可达30年，是石油、天然气管线最理想的阀门。
The applies in the ocean oil gas pipeline construction bevel machine article, the belt copper liner welds and pipeline auto welding machine, welding equipment and welding procedure were introduced.
介绍了应用于海洋油气管道施工的坡口机、带铜衬垫对口器、全位置自动焊等焊接装备和焊接工艺。
Pipeline rupture resulted from welding defects in Daqing-Tieling oil transport Pipeline greatly affected oil transport production.
大庆至铁岭输油管道由于焊接缺陷，导致管道发生破裂，严重影响了输油生产。
Due to different conditions, such as pipeline material, environment, load bearing, different cracks arise in the pipe wall or welding seam, which will lead to oil or gas leakage.
由于管道的材质、所处的环境以及承受荷载等条件不同，在管壁或焊接部位会出现不同程度的裂纹，从而导致管道破裂产生油气泄漏。
This article summaries costruction performance of the oil transmission pipeline engineering. It also introduces new technology and process in welding process and anti - corrosion structure, etc.
本文归纳了该管道工程的施工特点，并介绍了在焊接工艺、防腐结构等方面采用的新技术、新工艺。
This article summaries costruction performance of the oil transmission pipeline engineering. It also introduces new technology and process in welding process and anti - corrosion structure, etc.
本文归纳了该管道工程的施工特点，并介绍了在焊接工艺、防腐结构等方面采用的新技术、新工艺。
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