精选优质文档-倾情为你奉上ASTM美国材料标准中文版ASTM A488/A488-2007 钢铸件焊接工艺和人员资格评定的标准实施规程(Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel) ASTM A802/A 802M-1995(R2006重新审批) 视觉检测铸钢表面验收标准规程(STANDARD PRACTICE FOR STEEL CASTINGS, SURFACE ACCEPTANCE STANDARDS, VISUAL EXAMINATION) ASTM B108-2006 铝合金永久型铸件标准规范(STANDARD SPECIFICATION FOR ALUMINUM-ALLOY PERMANENT MOLD CASTINGS) ASTM B179-2006 铸造用铝合金原锭及熔融锭在各铸造过程的标准技术规范(STANDARD SPECIFICATION FOR ALUMINUM ALLOYS IN INGOT AND