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国内的非金属标准在哪里？有对应的标准没有？
大美丽有如下的。。。
The ASME Standards for Nonmetallic Pressure Piping Systems (NPPS) are as follows:
NM.1 Thermoplastic Piping Systems: This Standard contains requirements for piping and piping components that are
produced using thermoplastic resins or compounds. Thermoplastics are a specific group of nonmetallic
materials that, forprocessing purposes, arecapable of being repeatedly softened by increase of temperature and
hardened by decrease of temperature.
NM.2 Glass-Fiber-Reinforced Thermosetting-Resin Piping Systems: This Standard contains requirements for piping and
piping components that are produced using glass-fiber reinforcement embedded in or surrounded by cured
thermosetting resin.
NM.3 Nonmetallic Materials: This Standard includes specifications for nonmetallic materials (except wood, nonfibrous
glass, and concrete) and, in conformance with the requirements of the individual construction standards,
methodologies, design values, limits, and cautions on the use of materials. This Standard is divided into three
Parts:
– NM.3.1, Nonmetallic Materials, Part 1 —Thermoplastic Material Specifications: This Part contains thermoplastic
material specifications identical to or similar to those published by the American Society for Testing and
Materials (ASTM International) and other recognized national or international organizations.
– NM.3.2, Nonmetallic Materials, Part 2 — Reinforced Thermoset Plastic Material Specifications: This Part contains
reinforced thermoset plastic material specifications identical to or similar to those published by ASTM and other
recognized national or international organizations.
– NM.3.3, Nonmetallic Materials, Part 3 — Properties: This Part provides tables and data sheets for allowable
stresses, mechanical properties (e.g., tensile and yield strength), and physical properties (e.g., coefficient of
thermal expansion and modulus of elasticity) for nonmetallic materials.
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