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GB/T 18997.2-2020.Plastic/ aluminum/ plastic composite pressure pipes-Part 2:Composite pipes butt-welded by aluminum pipe. 1范围 GB/T 18997的本部分规定了用嵌人对接焊
GB/T 39395-2020.Test method for buckling resistance of the thermoplastics inspection chamber bases. 1范围 GB/T 39395规定了热塑性塑料检查井井座安装后,在土壤和地下水综合作用力下抗压失稳的三
GB/T 28799.5-2020.Polyethylene of raised temperature resistance ( PE-RT) piping systems for hot and cold water installations- Part 5: Fitness for purp
GB/T 19473.2-2020.Polybutene (PB) piping systems for hot and cold water installations-Part 2:Pipes. 1范围 GB/T 19473的本部分规定了以聚丁烯混配料为原料,经挤出成型的聚丁烯管材(以下简称管材
GB/T 19473.3-2020.Polybutene (PB) piping systems for hot and cold water installations-Part 3:Fittings. 1范围 GB/T 19473的本部分规定了以聚丁烯混配料为原料,经注塑成型的聚T烯管件(以下简
GB/T 18993.2-2020.Chlorinated poly ( vinyl chloride) (PVC-C) piping systems for hot and cold water installations一Part 2 :Pipes. 1范围 GB/T 18993的本部分规定了以
GB/T 18993.5-2020.Chlorinated poly ( vinyl chloride) (PVC-C) piping systems for hot and cold water installations-Part 5: Fitness for the purpose of sy
GB/T 39383-2020.Thermoplastics piping systems for underground non-pressure applications-Test method for leaktightness of elastomeric sealing ring type
GB/T 39379-2020.Thermoplastics piping systems for non-pressure applications-Test method for watertightness. 1范围 GB/T 39379规定了无压热塑性塑料管道系统的水密性试验方法。 GB/T
GB/T 39514-2020.Terminology, defination,identification of biobased materials. 1范围 GB/T 39514规定了生物基材料的术语和定义、标识要求。 GB/T 39514适用于以下各类生物基材料,包括生物基化学品.聚合物、塑
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