HG/T 2643-2023
非金屬化工設備 丙烯腈-丁二烯-苯乙烯、聚氯乙烯、均聚聚丙烯、聚偏氟乙烯和玻璃纖維增強聚丙烯隔膜閥
Non-metallic chemical equipment acrylonitrile-butadiene-styrene, polyvinyl chloride, homopolypropylene, polyvinylidene fluoride and glass fiber reinforced polypropylene diaphragm valves
HGT2643-2023, HG2643-2023