Tsunaga, Matsunami, Sato, Nakata
PE-X & Other Pipes # 1998 Gothenburg
By applying the cross-linked EF to the cross-linked PE(PEX) pipe \vhicli has a composite structure, the reliability of hot water piping system under severe environment lias significantly increased. A continuous use for approsimately 30 years under severe conditions such as 80 "C. and I MPa becomes possible. In this system, thc advantages of PEX are well applied and creep rupture is prevented by the composite structure. Moreover. by a new application of crosslinked EF system for the joints where proble~ilsoften occurrcd. the reliability as a ]lot water piping system has increased significantly.
Author(s) : Hiroyuki Kurio, Yuuji Yamamoto, Kenji Mizukawa, Takayoshi Yarimizu, Kentarou Nakata, Satoshi Saitou, Hisao Hirota and Takashi Kuriyama
In this paper, an acceleration test has been done to evaluate of the resistance of polyethylene pipes to the chlorinated water with varying the concentration of chlorine and test temperature. The surface defects like a void due to the delamination of film about 10-micron meter thickness were observed after the...
Author(s) : Hessel, Lueghamer, Tsunaga
Case histories of large diameter heavy wall polyolefine pipe installations for water supply in Japan are presented. The different methods for heated butt welding procedures for polyethylene are compared. The test methods to assess the performance of the welds are described and the failure mechanisms are...