But with the same length of straight seam pipe than the weld length of 30 ~ 100%, and lower production rate.
但是与相同长度的直缝管相比，焊缝长度增加30 ~ 100%，而且生产速度较低。
The early eighties the Beijing Research Institute to build Wells conducted in the laboratory experiments to explore seam pipe bolt achieved good results.
八十年代初，北京建井钻研所在实验室进行了缝管锚杆探索实验取得了良好效果。
The early eighties, the Beijing Research Institute to build wells conducted in the laboratory experiments to explore seam pipe bolt achieved good results.
八十年代初，北京建井研究所在实验室进行了缝管锚杆探索实验取得了良好效果。
This paper introduces the measure, welding method and inspection result to prevent the welding deformation formation of spiral-seam pipe header after tapping.
介绍了在螺旋焊缝汇管上焊接支管时的防变形措施、焊接方法和检验结果。
This paper introduces the producing and technology characteristics of the square and rectangular double-welded seam pipe. And designing of the pass parameters of the cold-bent channel steel.
介绍了双焊缝方矩形钢管生产技术的特点及冷弯等边槽钢孔型设计参数。
Introduce welded seam specification, standards performed, inspectation items and acceptable index for welding of body and joint pipe.
介绍了阀体与接管焊接的焊缝技术要求、执行标准、检验内容及合格指标。
The use of pre buried in the structural layer of the drainage pipe hole as a deformation of the default seam to prevent the development of cracks.
行使预埋在结构层中的排水管孔作为变形预设缝，防止裂缝开展。
Main products are series bolts, series anchor cables, pipe seam roof anchor series and all kinds of steel, W strips, trays, machinery installation and so on.
主导产品是新型锚杆系列、锚索系列、管缝式锚杆系列及各种顶板钢带、W钢带、托盘、和安装机具等。
The article analyzes that all factors effect impacting toughness of welded seam of ERW pipe on the basis of mass produce and practice.
在大量生产实践的基础上分析了影响ERW直缝电阻焊钢管焊缝冲击韧性的各种因素。
The defects will be found in the seam side with ultrasonic inspection but hardly found with X ray inspection as the small diameter spiral pipe production with the split strip steel.
采用纵剪带钢生产小口径螺旋焊管时，超声波检验经常在焊缝的一侧发现缺陷波，而X射线拍片检验却很难发现。
Both wet and dry underwater welding operations are presented to repair the burst at the welding seam of large size crossing steel pipe.
介绍了大口径过河钢管接口焊缝爆漏现象，以及湿法和干法水下焊接修复技术。
During the modern longitudinal seam welded pipe production, the contacting pressure distribution between the roller and pipe is a very important parameter.
在现代的直缝焊管生产中，轧辊与管坯间的接触压力分布是一个非常重要的参数。
Internal stress of welds seam for long distance pipeline is analyzed starting with any point of circumferential stress on pipe wall.
从钢管壁上任意一点的环向应力入手，分析了长输管道焊缝的内应力。
It analyses quadratic phase stainless and its metal compound generated from weld seam and HAZ, which affect welded pipe usage property.
分析了双相不锈钢及其焊缝和热影响区中产生的金属间化合物等二次相对焊管使用性能的影响。
Aimed at spirally welded steel pipe, a visual sensor for automatic weld seam tracking system is developed.
针对螺旋埋弧焊钢管外焊，研制了一种基于视觉传感的焊缝自动跟踪系统。
Welding seam should be numbered according to pipeline medium set, in principle, main pipe prior to branch pipe.
焊缝编号应根据管线介质流向进行编号，原则上应先主管后支管。
This article discussed the residual stress of the HU-METAL method formed large diameter longitudinal seam welded steel pipe.
对HU -METAL法卷制成型大直径直缝焊钢管残余应力进行了分析讨论。
The company now has six high-frequency straight seam welded pipe units, three hot-dip galvanizing line.
公司现拥有六条高频直缝焊管机组，三条热镀锌生产线。
This paper discusses the reason of scratch in the weld seam border of large OD. welded steel pipe, and analyses the method to reduce it.
讨论了大直径焊管焊缝边缘引起划痕的原因，分析减少焊缝边缘划痕的方法。
Inside welding seam cracking of spiral submerged Arc welded pipe is the unsolved problem for many years in the pipe field.
螺旋埋弧焊钢管内焊缝裂纹是本行业多年未解决的问题。
Notethe coating thickness of weld seam should be not less than 80% of coating thickness on pipe body.
焊缝处的防腐层厚度，不得低于管本体防腐层规定厚度的80%。
The test results show the band structure distribution has great influence upon the strong toughness of welded pipe seam.
试验结果表明：带状组织的分布对焊缝强韧性影响较大。
How to increase the welded seam impacting toughness of ERW pipe is a great problem among the technology of pipe manufacture.
如何提高erw钢管焊缝冲击韧性是制管技术中的一大难题。
The isochromatic fringes graphs of smooth blasting and cutting seam blasting of pipe protecting borehole wall were obtained upon dynamic photo-elasticity experiments on both kinds of blasting.
进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验，获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。
Welding temperature is the most important factor which influences the quality of the welded seam in the process of producing ERW pipe.
在高频直缝焊管生产过程中，焊接温度是影响焊缝质量的首要因素。
According to the domestic pipeline construction demand to the pipe, it is proposed to import a longitudinal seam SAW steel pipe mill as early as possible.
根据国内管道建设的需要，建议尽早引进一条直缝埋弧焊管机组。
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。
A study was carried out on the microstructure of interface and welding seam in dual-metal clad steel pipe. And its inferences on technological and service properties were studied.
通过金相分析、微区成份分析、宏观和微观断口分析，主要研究钎焊层和焊鏠区的微观结构及其对复合钢管工艺性能和使用性能的影响。
Through the situation of slight crack of brazing seam is verified to high-handed pipe. Decision adopts and join by welding near dig the method built up and carry on renovate.
通过对高压导管焊缝裂纹的情况核实，决定采用焊接挖补的方法进行修复。
Through the situation of slight crack of brazing seam is verified to high-handed pipe. Decision adopts and join by welding near dig the method built up and carry on renovate.
通过对高压导管焊缝裂纹的情况核实，决定采用焊接挖补的方法进行修复。
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