Good welding requires exact positioning of the pipe ends.

良好的焊接要求两个管端正确对齐。

Pipeline inner loop welder is applicable for big-caliber pipeline welding in construction procedure to joint the ends of pipes and fulfill roots welding.

管道全位置自动内焊机适用于大口径管道焊接施工过程中组对管口、完成根焊。

Therefore, the first side pins and the second side pins can have symmetrical lengths without long side suspension ends and can be suitable for sticking and fixing wafers with single side welding pads.

因此，该些 第一侧引脚可与该些第二侧引脚达到长度对称且不会有长侧悬空端，而可 以适用于贴固具有单侧焊垫的晶片。

A kind of seal welding technology of the pipe ends for achieving the reliable welds of stainless steel clad pipe is introduced.

介绍了一种可实现不锈钢复合管可靠焊接的管端密封焊接技术。

Tube bundle fix the drooped structures through welding for both ends of upper header and make fly ash drop by rapping the end plate of lower header.

锅炉中的管束是上部集箱的两端通过焊接固定垂下的结构，通过锤打下部集箱的端板，振落飞灰。

This paper describes the development of high - pressure steel butt welding bends with straight ends.

本文概述钢制对焊高压带直段弯头的开发。

The shortcomings of this method is easy to welding deformation of the chain of boxes, at both ends of the coaxial shaft tolerance and lack of support strength.

此法缺点是焊接后链条箱易变形、两端轴的同轴度超差以及支撑强度不够。

In this way at the ends of the shaft 1 layers or lines of welding can be superimposed on each other to form barriers 4.

以这种方式在轴两端的1层或线的焊接可以互相叠加，形成障碍4。

Take welding from middle to both ends step by step may have the least deformation, or take welding from one section to another step by step may also reduce the deformation.

从中间向两端逐步退焊法变形最小，采用逐段跳焊法也可以减少变形。

Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends.

球阀线程，插焊，焊点，槽和扩口端。