Standard No.:	GB/T 40937-2021
English Name:	Plastic piping systems—Determination of long-term strength for plastic composite pipes and fittings
Chinese Name:	塑料管道系统 塑料复合管材和管件长期强度的测定方法
Chinese Classification:	G33    Plastic profile
Professional Classification:	GB    National Standard
ICS Classification:	83.140.30 83.140.30    Plastics pipes and fittings for non fluid use 83.140.30
Source Content Issued by:	SAMR; SAC
Issued on:	2021-11-26
Implemented on:	2022-6-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	9500 words
Translation Price(USD):	285.0
Delivery:	via email in 1~3 business day

本文件规定了用于测定塑料复合管材和管件长期强度的三种方法：1)方法Ⅰ——计算方法；2)方法Ⅱ——多温度耐压试验外推法；3)方法Ⅲ——特定温度耐压试验外推法。
本文件适用于P型多层管、M型多层管和增强热塑性塑料复合管(RTP管)等塑料复合管道，不适用于由单一聚合物应力设计层或不参与应力设计的聚合物外护层构成的管道。