应尽量少用长径异径对焊弯头。
Reducing long radius butt weld elbows shall be kept to a minimum.
所有截止阀按要求为对焊端连接。
All valves are to be supplied with butt-weld end connections as specified.
其冷却结构增强了对焊炬的冷却。
The cooling structure of the utility model enhances cooling to the welding torch.
是否对焊膏的有效期进行控制？
管采用热熔对焊连接或电熔套管连接。
HDPE pipe to connect the use of hot-melt or fused welded casing connection.
美国继续征收碳钢对焊管件反倾销税。
本文概述钢制对焊高压带直段弯头的开发。
This paper describes the development of high - pressure steel butt welding bends with straight ends.
焊接包括对焊和承接焊。
将作为焊接键部位的对焊电极进行水冷却处理。
焊前必须对焊件清除铁锈、油污、水份等杂质。
Rust, oil stain, moisture and other impurities should be cleaned before welding.
系统研究了焊料尺寸分布对焊膏流变行为的影响。
The effect of particle size distributions on rheological properties is investigated.
探讨造船厂电焊作业受限空间对焊尘接触量的影响。
To study the influence of confined space in the cabin on the exposure level of welding fume.
我公司是对焊法兰的主要供应商，产品主要销往全国各地。
I welded flange is a major supplier, and products are mainly sold to all parts of the country.
本发明涉及一种圆管对焊快速找正定位装置及圆管对焊方法。
The invention relates to a circular duct butt-welding rapid spotting and locating device and a circular duct butt-welding method.
高频对焊代替高频搭焊是提高中直径螺旋焊管质量的可靠途径。
A reliable way to improve the quality of spiral pipe was the substitution of high frequency butt welding for HF lap welding.
提出了焊接过程中产生裂纹的控制方法及对焊后变形的矫正方法。
Controlling for the variables related, preventing the crriage from cracking during welding and correcting distortion for it after welding are discussed, too.
研究接头形状、钎缝厚度对焊后残余应力的大小及分布规律的影响。
The effects of joint shapes and filler metal thickness on the distribution of residual stress were researched.
研究了新型准贝氏体钢制造的矿用圆环链闪光对焊焊缝的组织与性能。
Studied the joint structure and properties of flash butt welding to mining chains round made of new type meta-bainite steel.
介绍和分析了焊管生产几种常用的成形工艺，以及对焊管质量的影响情况。
Several normal forming processes used in welded tube production were introduced, as well as its influence on the quality of welded tube.
济南不锈钢管的衔接方法常用的有对焊衔接、承插焊衔接以及管螺纹衔接。
Ji 'nan stainless steel pipe connection methods are commonly used welding connection, socket welding connection and pipe thread connection.
根据磁控旋转电弧的工作原理，设计了一种新型磁控旋转电弧管板对焊装置。
Based on the operating principle of magnetically impelled rotating arc, a new type of tube to plate butt welding device was designed.
提出了基于固有应变理论的模型，对焊后局部热处理各个阶段的特征进行了阐述。
A model based on inherent strain theory has been proposed to explain the mechanism at different stage of local PWHT.
工艺试验表明，该设备能实现脉冲闪光对焊的要求，焊接接头能够满足使用要求。
It shows by the process that the equipment can meet the requirements of flashing butt welding.
随着用户对焊管表面质量要求的不断提高，消除焊管表面划伤越来越受到人们的重视。
People more and more pay much attention to removing of surface scratch on welded pipe through the increasing surface quality requirement to welded pipe by end users.
这个标准涵盖采用承插热熔和对焊热熔方法对聚烯烃材料管道和连接件进行热连接的程序。
This standard covers the procedures for the heat joining of pipe and fittings made from polyolefin materials utilizing either the socket or butt fusion methods.
对焊膏的助焊剂活性从润湿力的角度研究导致缺陷的成因，并根据润湿力选择备选焊膏。
The causes for defects from the point of wetting force for the flux activity of solder paste were studied, the solder paste according to the wetting force was selected.
对焊膏的助焊剂活性从润湿力的角度研究导致缺陷的成因，并根据润湿力选择备选焊膏。
The causes for defects from the point of wetting force for the flux activity of solder paste were studied, the solder paste according to the wetting force was selected.
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