Welding quality assurance in rolling stock construction and maintenance 机车车辆制造和维修中焊接的质量保证
Welding Quality Assurance(WQA) System in Construction of Gas Projects 浅谈燃气工程施工中的焊接质量保证(WQA)体系
The basis for welding quality assurance in rolling stock construction in Germany is the set of DIN 6700 standards together with the basic European CEN TC 121 standards in that specific area. 德国以系列标准DIN6700及欧洲专业基础标准CENTC121作为对铁道机车车辆焊接质量要求的基础。
Welding quality is easy to be assurance since the site assembly and auto - welding technology are adopted. Comparing to manual welding, it rises 4 ~ 6 times of welding effect. 工程应用表明:采用这种现场组对自动焊接技术,焊接质量易于保证,与手工电弧焊相比,焊接工效提高了4~6倍。
Two main methods at present for welding of polyethylene pipe is introduced and essential measures of quality assurance for it is. also discussed in this paper. 介绍了焊接聚乙烯(PE)塑料管的两种焊接方法及其保证焊接质量的措施。