Meeting the Need for Stiffer Large Diameter Plastics Pipes in China

5 minute posters # 2014 Chicago

In China demand is growing rapidly for large diameter plastic pipes due to urbanization and the need to protect the environment with improved storm-water management systems. Whilst plastic pipes are already used in China for underground sewage and drainage applications the properties and processing limitations of the materials used are such that they are not able to fulfill all the requirements for large diameter pipes in terms of the required ring stiffness and cost structure. This gap can be filled by high modulus polypropylene block co-polymer materials (PP-B HM). Large diameter spiral wound pipes with improved structural design were developed. The products reached higher stiffness at an economic cost which can meet the market requirements. In the paper the authors discussed the product design to reach optimized ‘pipe weight to stiffness’ ratio. A detailed comparison between large diameter HDPE and PP-B HM spiral wound pipes in terms of wall profiles and product weights and manufacturing costs was made. The procedure of the electrofusion of PP-B HM spiral wound pipe was discussed. Following extensive machine trials we are also able to define the optimum processing conditions for large diameter PP-B HM spiral wound pipes.

In the present paper, the development of high stiffness PP-B HM spiral wound pipe is discussed, combining PP-B HM material properties, spiral wound pipe structural design and improved processing conditions. In addition, electrofusion jointing of PP-B HM spiral wound pipe is also discussed. The developed PP-B HM spiral wound pipe meets the standards of EN13476 and ISO 21138.

Related keywords : pipe, wound, spiral, stiffness, diameter, wall.
Please note that the whole article content is available on PPCA website onlySource : 2014 Chicago


Related papers

CHINA PLASTIC PIPE INDUSTRY -- TECHNICAL PROGRESS AND QUALITY IMPROVEMENT

Author(s) : Wang Zhanjie 2018 Las-Vegas

As the largest production country, with numerous applications, China’s plastic pipe industry is developing steadily to meet the demand and needs. This paper analyzes the current situation and barriers, and proposes the breakthroughs to achieve a sustainable, stable and healthy development of China’s plastic pipe...

DEVELOPMENT OF LARGE-DIAMETER CONTINUOUS-FIBER- REINFORCED THERMOPLASTIC PIPE

Author(s) : Fengliang Jiang, Nian Wu 2018 Las-Vegas

This article discusses the development of the technique in producing large-diameter, medium-and-lowpressure water-delivery pipes. The continuous fiber-reinforced thermoplastic tapes perfectlyimpregnated with thermoplastic resin are wound layer by layer to form three-layer fibre reinforced polyethylene(PE) composite...

POLYEHTHYLENE/ALUMINUM/POLYEHTHYLENE COMPOSITE PIPE FOR FUEL GAS APPLICATION

Author(s) : Baiqian Li, Jun Wang, Lixian Zheng, Xiaoyi Peng, Lei Wang, Yu Cui, Guozhi Xu 2018 Las-Vegas

Polyethylene/Aluminum/Polyethylene (PAP) composite pipe has the advantages of corrosion resistance, limited joints and convenient installation. Nowadays PAP pipes are widely used in indoor gas conveyance. But a number of companies encounter difficulties in installing gas meter in users’ house as well as billing....

THE TEST METHOD OF METALLIC ELEMENT FOR POLYETHYLENE PLASTIC PIPES OR MATERIALS FOR PIPES AND ITS APPLICATION

Author(s) : Xiaoying Lu, Yujie Wang, Qiang Huang, Chunyan Xu, Guangyu Zhu, Aimin Xiang, Linmei Wu, Yanfang Wang 2018 Las-Vegas

The determination method of metal elements for polyethylene pipes was reported in this paper, the difference in metal elements content between raw materials and recycled materials was analyzed. The results showed that raw and recycled materials in polyethylene pipes were effectively distinguished via metal element...

ADVANCED CHEMISTRY IN PE POLYMERISATION ALLOW NEW POSSIBILITIES FOR PE-RT TYPE I RESIN

Author(s) : Alex Stolarz, Jian Wang 2016 Berlin

THE PE-RT TECHNOLOGY HAS EVOLVED SINCE IT HAS FIRST BEEN INVENTED 1982. AN ESTABLISHED TECHNOLOGY FOR HOT AND COLD SANITARY PIPES HAS POSITIONED ITSELF WELL WITHIN OTHER MATERIALS DUE TO THE EASY PROCESSING, HANDLING AND COST EFFICIENT PRODUCTION OF PIPES. RECENT TECHNOLOGY ALLOWS EVEN MORE FLEXIBLE RESINS TO BE...

ASSESSMENT OF FUSION DEGREE OF UNPLASTICIZED POLY (VINYLCHLORIDE)(PVC-U) PRODUCTS USING TORQUE RHEOMETER

Author(s) : Fu Zhimin, He Guoshan, Wang Wanjuan 2016 Berlin

Our research shows that in a torque rheometer test the greater the fusion degree of PVC-U is, the higher the minimum torque of the torque curve is, and the smaller the difference between the maximum torque and the minimum torque of the torque curve. According to the relationship, the method of evaluating the fusion...

REVIEW OF QUALITY, APPLICATION AND DEVELOPMENT FOR PE PRESSURE PIPE IN CHINA

Author(s) : ZhanJie Wang, Cindy Wang 2016 Berlin

With the offers of whole value chain people, the application of PE pressure pipes has been increased widely in China since 1990’s, especially for gas pipes. Compounding PE material ensures the qualified pipes being used for infrastructure projects. There are some Innovation products from pipe producers to enlarge...

THE INFLUENCE OF BETA- CRYSTAL CONTENT IN PP-RCT MATERIALS AND CALCULATIONS OF THE TEST PRESSURE OF PIPE

Author(s) : Tu Xiang-qun, Wang Chao, Cheng Zhong-lin, Dong Bo-bo 2016 Berlin

This paper is to verify the impact of different contents of nucleating agent and annealing processes on the content of β-crystal. By using four-parameter equation of PP-RCT with requirements in different application conditions, different temperature coefficients and Miner's rules the design stress of PP-RCT materials...

THE STUDY OF RESIDUAL STRESS AND MECHANICAL PROPERTY ON LARGE DIAMETER HDPE PIPE

Author(s) : Sun Jin, Hua Ye, Wei Ruo-qi 2016 Berlin

Nowadays large diameter HDPE pipes have been widely used in water supply, municipal gas, mines, nuclear service and other fields, while residual stress of large diameter thick-walled pipes in the extrusion processing have resulted in lots of engineering failure cases. In this paper residual stress and mechanical...

VARIOUS APPROACHES TO THE IMPROVEMENT OF POLYETHYLENE PIPING CONSTRUCTION QUALITY IN OSAKA GAS (2016)

Author(s) : Jun Abe, Takahiro Kasatani, Yuji Higuchi 2016 Berlin

Osaka Gas has carried out the production, supply, and sale of gas since 1905 and has distributed gas to 7,200,000 customers. The piping used for distribution was originally steel and cast iron pipes, but we have been adopting the use of polyethylene piping for low pressure distribution since 1980, and have to date...

Members of the Association

BOREALISBOROUGEINEOS O&PIRPCKorea Petrochemical IND. Co., LTDLyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
TOP