T/GZHG 011-2021 Nano-modified Polypropylene (HPPM) Square Powered Double-walled Ribbed Pipe

Scope

Main Technical Content: Group Standard T/GZHG 011-2021 replaces T/GZHG 011-2020. It was issued on October 19, 2021. Preamble: This standard was drafted in accordance with the rules set forth in GB/T 1.1–2020. This standard replaces T/GZHG 011-2020, "Nanomodified Polypropylene (HPPM) Square Power Double-Wall Corrugated Pipe". The main changes compared with T/GZHG 011-2020 include: — Adding two new connection methods to "4.2 Connection". Please note that certain content of this standard may involve patents. The issuing authority of this standard does not assume responsibility for identifying these patents. This standard was proposed by Kang Mingyuan (Guizhou) Technology Development Co., Ltd. This document is managed by the Guizhou Chemical and Chemical Engineering Society. Drafting units: Kang Mingyuan (Guizhou) Technology Development Co., Ltd. Guizhou Shanmeng New Materials Technology Co., Ltd. Chinese Academy of Sciences Green Chemistry and Advanced Materials R&D Center Guizhou Product Quality Inspection and Testing Institute Guizhou Building Materials Product Quality Inspection and Testing Institute Hubei Dayang Plastics Co., Ltd. Guizhou Guosui Technology Pipe Industry Co., Ltd. Pingxiang Dianli New Materials Technology Co., Ltd. Guizhou Nanfang Weiyi Technology New Materials Co., Ltd. Sichuan Pinrui Henteng New Materials Technology Co., Ltd. Hubei Wanjin Technology Co., Ltd. Guizhou Zhengye Engineering Technology Investment Co., Ltd. Guizhou Water Construction Engineering Co., Ltd. Guizhou Shuanglong Airport Development Investment (Group) Co., Ltd. Guyang Urban Development Investment (Group) Co., Ltd. Guizhou Qiancai Technology Development Co., Ltd. Main Drafters: Wang Hua Guo Jianbing Lin Minghua Gao Wenlong Huang Xin Zheng Bin Zhou Chenglin Ren Bobochun Wang Kangmao Jin Zhenghua Luo Fuguo Yuan Tao Guo Zongzhi Zhou Chengxian Chen Hongsong Li Xue Jiang Wenyang Hu Zongjun

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