The valve is characterised by heavyweight, special shape, bad welding performance, but demanding excellent welding quality etc.
此类阀门具有质量大、形状特殊、焊接可达性差，焊接质量要求严格等特点；
Normal running of chemical equipments and quality of products are effected by welding quality of special chemical equipments.
特种化工设备焊接质量的好坏直接影响到设备的正常运行和成品的质量。
This special welding machine has rational structure, USES PLC for automatic control, reduces labor intensity, and improves work efficiency and welding quality of workpiece.
该焊接专机结构合理，利用PLC进行自动控制，降低了工人的劳动强度，提高了工作效率，改善了工件焊接质量。
An advanced double wires narrow gap SAW technique, equipment and special procedure have been used to weld high pressure storage tanks successfully with high quality welding joints.
采用先进的双丝窄间隙埋弧焊设备和专用焊接工艺，成功地焊接了大厚壁高压蓄势器，质量检查全部合格。
Due to the welding are special processing method, people set up a lot of standard to measure the quality.
鉴于焊接加工的特殊性，人们建立了些标准作为质量管理的准绳。
This special welding machine makes the welding process of front beam stable and continuous and improves the welding quality greatly.
保证了前机梁焊接过程持续、稳定，提高了前机梁的焊接质量。
Special welding equipment must be developed, to achieve Cu-Al pipe weldment in high quality.
为实现铜-铝管的优质焊接，需要研制相应的焊接设备。
Special welding equipment must be developed, to achieve Cu-Al pipe weldment in high quality.
为实现铜-铝管的优质焊接，需要研制相应的焊接设备。
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