T/GZAS 5-2018
HDPP double layer steel hot melt composite drainage pipe (English Version)

Standard No.

T/GZAS 5-2018

Language

Chinese, Available in English version

Release Date

2018

Published By

Group Standards of the People's Republic of China

Latest

T/GZAS 5-2018

Scope

Ring stiffness SN8 SN12.5 SN16 Drop weight impact test 10/10 Pass ring flexibility sample is smooth, no reverse bending, no cracking, no separation of the two walls Recovery rate of pipe deformation 1 hour after ring flexibility test, inner diameter before and after test Retention rate is greater than 95%. No bubbles, no delamination, no cracking in oven test. Creep ratio ≤ 4%. OIT oxidation induction time ≥ 20 min.

T/GZAS 5-2018 history

• 2018 T/GZAS 5-2018 HDPP double layer steel hot melt composite drainage pipe