随着中国制造业的发展与进步,压力容器这个传统制造业的转型升级及走出去的步伐在加快。我国的压力容器开始向美国等高端市场出口,国内的压力容器企业对ASME标准的产品制造并不陌生,但是对于ASME产品进行美国国家锅炉压力容器检查协会NB...随着中国制造业的发展与进步,压力容器这个传统制造业的转型升级及走出去的步伐在加快。我国的压力容器开始向美国等高端市场出口,国内的压力容器企业对ASME标准的产品制造并不陌生,但是对于ASME产品进行美国国家锅炉压力容器检查协会NB(The National Board of Boiler and Pressure Vessel Inspectors)的注册经验相对较少。所以按美国ASM E标准进行设计、制造的产品,如何在美国做NB注册及其中注意事项,就越来越多的引起关注。展开更多
There are many karst areas within Wuhan-Guangzhou route. Karst grouting is one of the main construction procedures of the sub-grade construction. Through construction art tests,construction principles,water and cement...There are many karst areas within Wuhan-Guangzhou route. Karst grouting is one of the main construction procedures of the sub-grade construction. Through construction art tests,construction principles,water and cementation ratio,grouting construction key points and quality check requirements were determined. Grouting quantity and pressure can be determined according to different geology conditions. Recommendations for quality problems such as bad practicability of grouting,unexpected dissipation of slurry,slurry belching,and overfeeding of slurry going to non-grouting area were proposed.展开更多
文摘随着中国制造业的发展与进步,压力容器这个传统制造业的转型升级及走出去的步伐在加快。我国的压力容器开始向美国等高端市场出口,国内的压力容器企业对ASME标准的产品制造并不陌生,但是对于ASME产品进行美国国家锅炉压力容器检查协会NB(The National Board of Boiler and Pressure Vessel Inspectors)的注册经验相对较少。所以按美国ASM E标准进行设计、制造的产品,如何在美国做NB注册及其中注意事项,就越来越多的引起关注。
文摘There are many karst areas within Wuhan-Guangzhou route. Karst grouting is one of the main construction procedures of the sub-grade construction. Through construction art tests,construction principles,water and cementation ratio,grouting construction key points and quality check requirements were determined. Grouting quantity and pressure can be determined according to different geology conditions. Recommendations for quality problems such as bad practicability of grouting,unexpected dissipation of slurry,slurry belching,and overfeeding of slurry going to non-grouting area were proposed.