物理安全检测
ISO 9969热塑管. 环刚度的测定
ISO 9969热塑管. 环刚度的测定—标准名称
ISO 9969 Thermoplastics pipes - Determination of ring stiffness
ISO 9969热塑管. 环刚度的测定
ISO 9969热塑管. 环刚度的测定—适用范围
Scope：
This International Standard specifies a test method for determining the ring stiffness of thermoplastics pipes having a circular cross section.
ISO 9969热塑管. 环刚度的测定—相关标准
ISO 9969热塑管. 环刚度的测定/Thermoplastics pipes - Determination of ring stiffness
GB/T 9647热塑性塑料管材 环刚度的测定/Thermoplastics pipes — Determination of ring stiffness
YD/T 841.1地下通信管道用塑料管 第1部分：总则/Plastic duct for telecommunication underground conduit Part 1: general
ASTM D2412用平行板加载法测定塑料管外部加载特征的标准试验方法/Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading
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