Introducing PP-HM Materials for Twin Wall Corrugated Pipes in China

Papers # 2012 Barcelona

Key words : Corrugated pipe, PP-HM, PE, sewage, drainage 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 or higher stiffness products. This gap can be filled by high modulus polypropylene block co-polymer materials (PP-HM) and some Chinese pipe producers are now launching these higher stiffness pipes and fittings which are being welcomed in the market. However, since the pipe producers in China are only equipped with HDPE corrugators the question arises of how to utilize PE corrugators to make PP-HM twin walled pipes. This paper discusses how this question was addressed by changes to the processing conditions and the resulting differences in final pipe properties and characteristics. In China high quality twin walled pipes up to 800mm diameter have been produced using PP-B HM materials on standard HDPE corrugators which conform to a higher stiffness class (SN) at the same pipe dimensions compared than the equivalent HDPE pipes.

Please note that the whole article content is available on PPCA website onlySource : 2012 Barcelona


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...

New high modulus polypropylene helps the development of large diameter utility tunnel

Author(s) : Dongyu Fang, Mark Yu, Zhang Qingfu 2018 Las-Vegas

In the present paper we introduced how high modulus polypropylene helps an innovative design of utility tunnel up to 4000mm in diameter. High modulus polypropylene shows high modulus but still maintain reasonable flexibility so that tunnel and surrounding soil could form an integrated system, which means no force is...

PE100-RC in large diameter sea outfall applications

Author(s) : Mark Yu, Dongyu Fang, Peck Tze Kang, Amos Tay , Fan Liu 2018 Las-Vegas

Large diameter pipe was introduced in refineries and petrochemical plant, desalination plant and power plant for water intake and sea out fall in the past decade. PE100-RC material was selectedfor its excellent balance of superior bi-modal stress crack resistance and consistent high stiffness modulus. Under the...

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...

A novel cyclone single stack system for building drainage

Author(s) : Chen Jianchun, Liu Luliang 2016 Berlin

3S (Strengthen Single System) cyclone single stack system is a new product for building drainage, which has the advantages of saving materials, large drainage quantity, low drainage noise, etc. In this system, the guide structure, swirl angle, volume structureand the height of spiral reinforcement are optimized...

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...

Evaluating strain hardening (SH) and cracked round bar (CRB) test methods with respect to molecular structure of materials and correlation to notched pipe test (NPT)

Author(s) : Suleyman Deveci, Dongyu Fang 2016 Berlin

Latest developments in polyethylene production (hexene co-monomer and bi-modality) have increased the material’s Slow Crack Growth (SCG) properties, which is a time dependent brittle type failure under low stress levels and one of the most important long term properties of pipe grade polyethylene materials. Despite...

Novel polyolefin solutions - Increasing production rate of pipes and fittings with superior properties

Author(s) : Antti Tynys, Dongyu Fang, Prashant Nikhade, Mark Yu, Tomi Kangas 2016 Berlin

The need for larger diameter pipes and fittings for in-house heating, plumbing and domestic water systems is pushing the existing materials and processes to their limits. More often final products cannot be produced without penalties either in production rate or in final product quality. This paper discusses...

Reducing operational risk in vintage plastic distribution systems

Author(s) : Ernest Lever, Yongming Liu, Yiming Deng 2016 Berlin

This collaborative program will provide an integrated set of quantitative tools that will provide a structured approach to reducing operational risk in vintage plastic distribution systems susceptible to Slow Crack Growth failures. A novel endoscopic structured light scanning tool will be developed and prototyped for...

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...

Structural wall multilayer composite PE pipe

Author(s) : Sun Qingjun, Liu Tongxi and Zhang Tianjun 2016 Berlin

A new composite PE pipe for pressure applications has been developed which combines the following features: polyethylene based, of structural wall, of multiple layers and steel reinforced. Another outstanding feature of this product is that large diameters up to dn2200-2600mm can be made and higher ring stiffness is...

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...

Design Study on Wall Thickness and Structure of Polyolefin Socket Fusion Fittings

Author(s) : Tu Xiangqun, Wang Chao 2014 Chicago

Two kinds of comprehensions about the wall thickness of socket fusion fittings from GB/T 28799.3- 2012 have been analyzed in this paper. Socket wall thickness relative to the different value of pipe series of fusion fittings was calculated respectively, and two kinds of simplified calculation have been suggested. The...

Helping Abu Dhabi Achieve its Environmental Vision to “Green The Desert”

Author(s) : KumHoong Lou, Farraj Tashman, Dongyu Fang, Faisal Mohamed Khouri 2014 Chicago

“Greening the Desert” was the vision of the founding President of the United Arab Emirates, His Highness the late Sheikh Zayed bin Sultan Al Nahyan. Today this vision is a reality because Abu Dhabi has planted 14 million trees in 250,000 hectares of forest, which are irrigated from 5,651 wells by a network of...

Meeting the Need for Stiffer Large Diameter Plastics Pipes in China

Author(s) : Wang Liqun, Wu Gengtian, Qi Jun 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...

Renovation of Old Water Pipeline and Case Study in China

Author(s) : Xiao Lei, Cheng Liang, Fang Dongyu 2014 Chicago

The renovation of old water pipes in a big city, such as Shanghai in China, is always a challenging job due to huge population, heavy traffic and high demand for drinking water. Due to these problems No-Dig technology has become common practice, particularly relining using plastic pipes, to repair corroded metallic or...

Steel Wire Reinforced Thermoplastics (PE) Composite Pipe Cross Sea Laying Technology

Author(s) : Tang Guoqiang, Wang Wei 2014 Chicago

This paper briefly introduces the characteristics of steel wire reinforced thermoplastics (PE) composite pipe structure, domestic and foreign sea crossing pipeline laying method, methods and their advantages and disadvantages, welding installation of steel wire reinforced thermoplastics (PE) composite pipe laying...

The Current Situation of China Plastic Pipe Industry and Market Opportunities for Further Economic Development in the Future

Author(s) : Wang Zhanjie, Zhao Yan, Melody Guo 2014 Chicago

In recent years, the Chinese plastic pipe industry has maintained a high growth rate and in 2012 the production of plastic pipe in China amounted to over 11 million tons. This not only provides important benefits due to the outstanding performance of plastic pipe, such as corrosion resistance, smooth wall, easy...

Members of the Association

BOREALISBOROUGEFormosa Plastics CorporationINEOS O&PIRPCKazanorgsintez PJSCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
TOP