Renewal of qualification may be made for any process by welding a single test coupon of either plate or pipe, and by testing of that coupon as required by QW-301 and QW-302.
如需重新获得资质，则该焊工需要遵照QW- 301和QW - 302的要求，在一个板材附件试片，或一个管材附件试片上，进行焊接试验。
Process of manufacture of welding production of ultra polygon round pipe is presented.
介绍了超多边形圆管的焊接生产加工工艺。
The demand to welding process of high-frequency welding pipe is introduced, some related parameters proposed.
介绍了高频焊管对焊接工艺的要求，提出了有关工艺及技术参数。
Based on the special weldability of big diameter stainless steel pipe complete welding, puts forward the more reasonable welding process and operational method.
大直径不锈钢管的全位置焊接，根据其特殊的焊接性，提出较合理的焊接工艺和操作方法。
Panel welding was used to simulate pipe welding on any key positions by adjusting the angle of welding process device.
特别是在焊机安装过程之中，解决了焊机应用于高压环境的密封问题。
The cladding process, anti-corrosion technology of pipe outer surface, welding process of pipe and properties and ap - plication of bimetallic clad pipe are presented in this paper.
介绍了内外层复合工艺、外覆防腐技术、管体间焊接工艺和双金属复合管的性能和使用。
It is introduced some welding process parameter of plasma welding system and its effect on practice application during stainless steel welded pipe.
介绍了等离子焊接系统在不锈钢焊管生产中的一些焊接工艺参数以及实际应用的效果。
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。
The paper gives a description to the electric resistance welding and stretch reducing mill process (ERW/SRM) in steel pipe production and the features of its main equipments.
介绍了用焊接和热减径工艺生产钢管的ERW/SRM 生产线及其主要的工艺设备特点。
This scheme analyzes the automatic welding technology of pressure pipe and abstracts the reasonable process and can provide reference for site welding of pressure...
该方案将压力钢管自动焊技术分解并提炼出了合理的工艺，可为水电站压力钢管的现场焊接提供参考。
Spiral welded pipe is a strip coil as raw material, often warm extrusion molding, to automatically double-wire submerged arc welding process double-sided spiral welded pipe joints.
螺旋焊管是以带钢卷板为原材料，经常温挤压成型，以自动双丝双面埋弧焊工艺焊接而成的螺旋缝钢管。
In this paper, the reform process of the welding equipment and the choice of welding parameter about CO2 enclosed-arc welding as skelp end-welding in welded steel pipe mill are introduced.
介绍了管子、带钢接头co 2气体保护自动焊焊接设备的改造过程及工艺参数选择。
Bosed on economic comparability the consumption of materials and the price of welding and seamless pipe are compared under the different producing process.
在经济可比性的范围内，分析生产焊接钢管和无缝钢管时，各类不同工艺流程条件下的物料消耗构成和价格比较。
The pipe fitting has the advantages of simple manufacturing process, easy control of the heating process of the pipe fitting, longer service life and good welding quality.
该类管件制造工艺过程简单，管件加热过程易于控制，具有较长的使用寿命，焊接质量好。
This paper, based on analyzing the process of Cu-Al pipe butt welding, discussed the design of the executive system and control system for PLC controlled Cu-Al pipe butt welder.
在分析了铜铝管焊接工艺过程的基础上，重点论述了铜铝管对焊机执行系统和控制系统的设计。
This article describes the whole process of JCOE longitudinal submerged arc welding pipe made from rolling plate.
简述了采用热轧卷板制造直缝埋弧焊接钢管的全过程。
Therefore the general construction process scheme is worked out as follows: open trench drainage, work site dried in the sun, conventional butt welding, and pipe laid down into trench.
经过调研和反复现场勘察，确定的总体施工方案为：挖明沟排水，作业带晾晒，正常组对焊接，沉管下沟。
The structural characters of steel pipe drilling rod, the signification of welding repair for the rods and the narrow gap welding process and equipment are introduced in the paper.
介绍了钻铤钢管的结构特点、焊接修复的意义，以及窄间隙焊接工艺与设备。
To introduce the process of wire drawing process, chemical Cu-plating process and formulation of top grade submerged-arc welding wire for pipe line steel.
介绍管线钢用高等级埋弧焊丝拉丝工艺、化学镀铜工艺及配方。
The new pre-treating Process is first described publicly in the article in order to provide references for the pipe-welding industry of our country.
本文是第一次向国内公开介绍这种全新的预处理工艺，供国内焊管行业参考。
Mechanical property and microstructure of T91 steel pipe joint with TIG welding on different high-temperature test process was researched.
采用不同的高温试验工艺对T91钢管的TIG焊接头进行处理，分析TIG焊接头在力学性能和显微组织上的差异。
The discussion involves such aspects as the cause of strip folding occurring in butt-welding process of spiral weld pipe, negative influence by such failure on pipe quality and preventive actions.
介绍了螺旋焊管生产中对头焊带钢的硬弯现象发生原因，对钢管质量的危害及防止措施。
The purpose of prebending process of longitudinal submerged arc welding pipe production line is introduced; character of roller prebending and mould press type prebending is analyzed.
简要介绍了直缝埋弧焊钢管生产线预弯工序的重要性、预弯的功能以及预弯工艺过程。
The purpose of prebending process of longitudinal submerged arc welding pipe production line is introduced; character of roller prebending and mould press type prebending is analyzed.
简要介绍了直缝埋弧焊钢管生产线预弯工序的重要性、预弯的功能以及预弯工艺过程。
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