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China Plastics Piping Association (CPPA) is a non-profit social organization which was founded on the principle of voluntariness by enterprises who engage in production of plastic pipes, and the enterprises related with plastic pipes. At present, there are 400 members consisting of excellent domestic manufacturers of plastic pipes and fittings, research and testing institutions, relevant institutions, suppliers of inspection equipment and raw material and etc.,.....

 Fujian Aton Advanced Materials S & T Co.,Ltd.
 Hebei Bosar Pipe Co., Ltd.
 Yonggao Co.,Ltd
 Nanya Plastics (Xiamen) Co., Ltd.
 Hubei Kaile Science and Technology Co., Ltd.
 Goody Technology Co., Ltd.
 China Lesso Group Holdings Limited
 Chengdu Chuanlu Plastic Group Co.,Ltd.
 Chinaust Group
 Anhui Guotong Hi-tech Pipes Industry Co., Ltd.
 Shandong Shenbon Plastics Co., Ltd.
 Shanghai White Butterfly Pipe Technology Co., Ltd.
 Rifeng Enterprise Co., Ltd.
 Shandong Huanqiu Plastic Industry Co,Ltd.
 Ginde Plastic Pipe Industry Group
 Fengye Holding Group
 Zhejiang Zhongcai Pipes S & T Co.,Ltd
 Ningxia Qinglong Pipes Industry Co., Ltd.
 Wuhan Kingbull Economic Development Co. Ltd.
 Zhejiang Weixing New Building Materials Co., Ltd.
 Hongyue Plastic Group
 Jun Xing Pipe Industry Group
 Kangtai Plastic Science & Technology Group Co.,Ltd
 Shandong Huaxin Plastic Pipe Co., Ltd.
 Jiangsu Xinghe Group Co., Ltd.
 Georg Fischer Piping Systems Ltd. Shanghai
 Hefei Anlo New Building Materials Co., Ltd.
 Ningbo Fangli Group Co., Ltd.
 Sichuan Tungtay New Material Technology Co., Ltd.
 Cangzhou Mingzhu Plastic Co., Ltd.
 Battenfeld-cincinnati (Foshan) Extrusion Systems
 Nam Sok Building Material Products(Shenzhen) Co.,L
 Fujian Zhenyun Plastics Industry Co., Ltd.
 Hangzhou Boda Plastics S & T Stock Co.,Ltd
 Hangzhou Shunda Plastics & Rubber Co., Ltd.
 Jincheng Fenghuang Industry Co., Ltd.
 Hebei Jingxin Chemical Group Co.,Ltd.
 Jiangsu Fasten Advanced Pipelines Co., Ltd.
 Shuangliu PE Factory of Minjiang Water Plant
 Zhejiang Shuanglin Plastic Machinery Co., Ltd.
 TianJin Sheng Xiang Plastic Pipe Industry Co., Ltd
 Changzhou Hippo Plastics Co., Ltd.
 Jiangsu Jiangte Technology Co., Ltd.
 Jiangsu Liantong Plastic Technology Co., Ltd.
 Handan Eton Building Materals Co.,Ltd
 Shandong Juwang Pipe Industry Co., Ltd.
 Hunan Shensu Technology Co.,Ltd.
 Ningbo Boer Pipe Industry Development Co., Ltd.
 Zhejiang Goffen Holding Group Co., Ltd.
 Hangzhou HONYAR Electrical Co.,Ltd
The qualification rate of water supply and drain pipes spot-checked in Shanghai reached 94%

Recently, Shanghai Municipal Bureau of Quality and Technical Supervision notified the quality spot-checked results of water supply and drain pipe at the second quarter in 2009, Shanghai: 3 batches of unqualified products were exposed.

There are mainly 3 kinds of water supply and drain plastic pipes for the construction industry: PPR pipes, PE pipes, and PVC-U (6395, 65.00, 1.03%) pipes. PVC pipes have been widely used for water supply and drain for the construction field; recently PPR pipes, mainly used for the cold and warm water supply system of the construction field have developed rapidly; and PE pipes as a kind of newly construction material are promoted greatly.50 batches of products were spot-checked, and the qualification rate reached 94%.

And tests showed that there were 3 batches of unqualified products, among of which were 2 batches of PE pipes for water supply. The main unqualified items were hydrostatic strength and oxidative induction time (OIT). OIT, the index shows the autocatalytic oxidation of the tested samples under the condition of high temperature and oxygen, evaluates the heat resistance and degradation of the material during the moulding process, storage, extrusion and application. The oxidation resistance of the material depends on the length of its OIT, which impacts on the quality of the pipes directly. The shorter OIT, the poorer oxidation resistance of the material.

There was 1 batch of unqualified products in OIT. The actual OIT is only 7 minutes (200), while the standard is at least 20 minutes, which means the quality is seriously bad. The hydrostatic strength which does not meet the standard indicates that the poor pressure endurance capability of the pipes, easily burst.

In addition, a batch of PPR pipes was unqualified, mainly in charpy impact test. If those products affected external impacts, they may rupture in the process of transport, loading and unloading, installation and application (especially in winter).

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Time:2010-1-18 10:21:22 | Read 2026 times | Print | Close

China Plastics Piping Association
Tel:(86)010-67587559 87509726
Address:Room 613, Building D, Greenland Central Plaza, Xinghua Street, Daxing District, Beijing, China
Postal Code: 102627