Study on the Consumption of Polyethylene Pipe Materials In China [PE]

Author(s) : Liang Yu, Akshay Ponda, Dane Chang

Following the development of US shale oil and gas production since 2007, the demand for thermoplastic pipes with better corrosion resistance, and lower installation and operation cost than carbon steel pipe, has been growing significantly. Nylon 12 has been qualified for hydrocarbon transportation in offshore flexible...

Author(s) : HU Fa, LI Yue, GAO Yuanjie, ZHE Dongmei, WEI Ruoqi

This paper expounds the development status of composite insulating pipe in the heating and chemical fields from the aspects of materials, structure and application. Combined with the relevant standards and technical requirements, the performance advantages and the key evaluation methods such as axial shear strength,...

Author(s) : Adriana Velasquez, Dr. Dane Chang, Dr. Siddharth Athreya

This paper studies the PENT results and how they vary based on sample preparation, equipment used, technique to place the sample as well as the number of heating cycles that the resin goes through after it leaves the manufacturing facility including those cycles needed to pre-compound virgin resin with a color...

Author(s) : Dongyu Fang, Mark Yu, Zhang Qingfu

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...

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

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...

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

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....

Author(s) : Cheng Zhi, Mingyuan Hu, Kaige Duan, Chaoxi Zhou, Dongming Yu

The PE properties are obviously improved by crosslinking modified to TPEX, which can approach to that of PEX, while still remaining thermoplastic. It can be processed by the common forming method of thermoplastic; the products can be hot-melted and the scrap can be processed to be reused. The two-layer structure...

Author(s) : Mingyuan Hu, Dongming Yu, Zhangcheng Chen, Cheng Zhi, Kaige Duan

Studying in barrier property of TLCP/PO alloy and EVOH/PO alloy. Filtrating formulas with extruding alloy into pipes. Trying to coat alloy on pipes and co-extrude into two-layer oxygen barrier plastic pipe. The traditional Ethylene vinyl alcohol copolymer (EVOH) barrier plastic pipe used in internal closed-loop...

Author(s) : Zhang Wei, Wei Ruoqi, Zhou Minghong, Zhou Mingwei,

This article gives a brief introduction of plastic inspection chambers in China. It focuses on the formulation of China's national standard for plastic inspection chambers and conducts the theoretical analysis and data validation of the key technical metrics in the standard for the following three tests: the...

Author(s) : Cliff Mure, Siddharth Athreya, Dane Chang, Rujul Mehta

New generations of PE100 and PE4710 pressure pipe materials exhibit a superior balance of mechanical properties. The slow crack growth performance of these materials measured by traditional tests such as PENT and FNCT can exceed one year. Accelerated test methods, including strain hardening modulus, accelerated FNCT,...

Author(s) : Lonnie Corley, Dane Chang, Harvey Svetlik, Matt Brandes, Thomas Musto, Frank Schaaf, David Fink

This paper presents a brief overview of a challenging project at the Callaway Nuclear Power Plant where HDPE was utilized to replace degraded steel buried piping in a Safety Related water system. Callaway was the first Nuclear Power plant to obtain NRC approval and successfully place the HDPE piping system into...

Author(s) : Dane Chang, Carl Baker

Due to its flexibility, toughness, and good resistance to corrosion and abrasion, polyethylene pressure pipe has been widely used for several decades in a variety of applications, including gas and water distribution, oil and gas gathering, and many industrial pipe segments. A significant limitation for polyethylene...

Author(s) : Chen Jianchun, Liu Luliang

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...

Author(s) : Aimin Xiang, Jianling Xie, Yuanzhang Yu, Yufeng Ren

PE-UHMW pipes standard and application in China are introduced. In this study, the tensile properties, charpy impact strength and abrasion characteristics of PE-UHMW pipes were investigated. These results demonstrate the excellent properties of PEUHMW pipes. A novel method of testing melt flow rate was also...

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

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...

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

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...

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

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...

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

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...

Author(s) : Nan Li

The properties of adhesive-coated steel tapes in metal reinforced polyethylene spiral corrugated pipe (MRPSCP) are very important for the properties of MRPSCP. In the present research, we take 3 years to develop a new technology to fabricate BZ-SH99 adhesive-coated steel tapes, which have better properties than those...

Author(s) : Zhang Wei, Wei Ruoqi, Zhou Minghong, Zhou Mingwei,

This article gives a brief introduction of plastic inspection chambers underground test, analyzes the stress borne by plastic inspection chambers from different angles combined with pressure sensors and strain gauges, sorts out some of the underground test data and analyzes the test data, and finally sums up the...