这个标准涵盖塑料美国锥管螺纹(NPT)的尺寸和计量方法，用于泄漏密封连接，现在已在所有有关塑料管道产品的ASTM标准中引用。
The standard covers dimensions and gaging of plastic tapered National Pipe Threads (NPT) for leak-tight joints, and it is now referenced in all ASTM Standards for plastic piping products.
下表以美国材料实验协会ASTMD 2855“聚氯乙烯（PVC）管道和管件液状粘固剂连接标准规程”有关标准制定。
The following table is based on the guidelines of ASTM D 2855, "Standard Practice for Making Solvent-Cemented Joints with Poly Vinyl Chloride (PVC) Pipe and Fittings".
除非另外指定，所有美国太平洋阀门都配置符合ANSI B16.25标准的对焊连接端口，并根据阀门壁厚和管道壁厚确定是属于型号2（b）或3（b）。
Unless otherwise specified, all Pacific valves will be supplied with butt weld ends conforming to ANSI B16.25 either Fig. 2(b) or 3(b) depending on the nominal pipe wall thickness of the valve wall.
根据用于管道法兰的美国非金属衬垫标准ANSIB16.21，需要能够延伸至法兰面边缘的全面衬垫。
Full face gaskets extending to the flange face edge as given in American Standard Non-Metal gaskets for Pipe Flanges ANSI B16.21 are required.
叙述了美国压力管道的安全管理体系，深入分析了美国压力管道的标准法规体系及其特点。
The safety management system of American pressure pipeline was expatiated on, and the code and standard system of American pressure pipeline and its characteristics were deeply analyzed.
叙述了美国压力管道的安全管理体系，深入分析了美国压力管道的标准法规体系及其特点。
The safety management system of American pressure pipeline was expatiated on, and the code and standard system of American pressure pipeline and its characteristics were deeply analyzed.
应用推荐