Analysis on pressure behavior of trilinear flow model of vertical fracture wells in triple porosity reservoir;
三重介质三线性流垂直裂缝井压力动态分析
Well testing analysis for vertical fracture wells with low-velocity non-Darcy flow;
低速非达西渗流垂直裂缝井试井分析
New approach to welltest interpretion model with finite conductivity vertical fracture in double porosity reservoirs;
双重介质中有限导流垂直裂缝井试井模型求解的新方法
It gropes and designs a method of three points bending roller type forming process design as per longitudinal welded pipe's transform rule.
根据直缝焊管变形规律,摸索设计出了一套三点弯曲辊式成型(即TPF成型)工艺设计方法。
In way of weld field,the article introduces application foreseeing of this technology,also discusses this technology application into 4 aspects:forming roller design and manufacturing,design of longitudinal welded pipe mill,the control of deform process and forming stress in longitudinal welded pipe in production,and the control of pipe residual stress in spiral welded pipe in production.
从焊管行业的角度介绍了虚拟制造技术在焊管生产领域的应用发展前景,探讨了该技术在成型辊设计与制造、直缝焊管机组的设计、直缝焊管生产中的变形过程和成型力的控制以及螺旋焊管生产中管体残余应力的控制等四个方面的应用。
The inner burr removing technology is an integrant working procedure to produce high quality and high additional value longitudinal welded pipe.
分析了ERW焊管生产过程中内毛刺清除存在的刮偏,刮削量过大、过小和刮不干净等常见问题的成因,并提出一些解决方法,以便于ERW直缝焊管厂家在实际生产过程中作参考。
A high-power and high-frequency inductive power supply used in ERW for medium-sized straight welded pipes is introduced.
介绍了用于中口径直缝焊管线焊接的高频大功率焊接电源,其采用基于IGBT功率元件的串联谐振式感应电源技术。
Since the conventional single blade and double blade sawing method for the big ERW high frequency (resistance) straight welded pipe is restrained, the digital controlled profile modeling sawing technology develops.
生产大规格ERW高频(电阻)直缝焊管,传统的单片式、双片式锯切方式受到了一定的限制,因此数控仿形锯切技术得到了发展。
The Modification to Inside Weld Grinding Machine for JCOE Formed Longitudinal Submerged Arc Welded Pipe
JCOE直缝埋弧焊管内焊缝磨削机的改造
Longitudinal electric resistance welded steel tubes
GB/T13793-1992直缝电焊钢管
sewn together with overhand stitches (close vertical stitches that pass over and draw the two edges together).
用锁边缝线缝在一起（将横过的垂直缝线合拢并将两个边缝在一起）。
The Study on Cage Roll Forming Processes of Large-sized ERW Straight Welded-pipe;
大直径ERW直缝焊管排辊成型工艺研究
Sharply Slow down the Construction of Large Diameter Longitudinal Welded Pipe Production Line
大直径直缝焊管机组建设热急需降温
Visual Sensing for Automatic Weld Tracking Systemto CO_2 Pre-welding of Longitudinal Welded Pipe
直缝焊管CO_2预焊视觉传感焊缝自动跟踪系统
Judgment of the Hydraulic Fractures in Chuankou Oilfield
延长川口油田水力压裂水平缝垂直缝的判别
Longitudinal Submerged Arc Welded Pipe Weld Tracking Method and Misalignment Analysis
直缝埋弧焊管焊缝跟踪方法与焊偏分析
On-line Measuring System for Large Dia.Straight Welded Pipe Based on LabVIEW;
基于LabVIEW的大直径直缝焊管的在线检测系统
Feasibility of Making Large Dia. Straight-seam Submerged Arc Pipe Welding Machine by Angang;
鞍钢建设大直径直缝埋弧焊管机组可行性探讨
To determine mandril diameter for 48"LSAW pipe
48英寸大口径直缝焊管成形芯轴直径确定
The Solution for Unacceptable LSAW Linepipe End Diameter
大口径直缝焊接钢管管端直径超差的处理方法
Study on FEM Simulation of Cage Forming of Large-sized ERW Straight-welded Pipe
大直径ERW直缝焊管排辊成型的有限元模拟
Amy sewed with outward meekness and inward rebellion till dusk.
阿密阳奉阴违地一直缝到黄昏。
Finite Strip Analysis for ERW Pipe Multiple Rolls Progressive Forming
多道次直缝焊管连续成型有限条分析
DC seam welder-"C"France Type.
直流缝焊机,"C"型。
a narrow flattened pleat or fold that is stitched in place.
在适当的位置缝的细直褶或折缝。
Welding the welds which are stagger first, then is the straight ang long weld.
先焊错开的端焊缝，后焊直通长焊缝。