Polyethylene/aluminum/polyethylene(PAP)composite pipe has the advantages of corrosion resistance,limited joints and convenient installation.We started to use the PAP pipe in fuel gas conveyance 21 years ago.It has exc...Polyethylene/aluminum/polyethylene(PAP)composite pipe has the advantages of corrosion resistance,limited joints and convenient installation.We started to use the PAP pipe in fuel gas conveyance 21 years ago.It has excellent performance in indoor gas application.Later,a unique method was designed to apply the PAP pipe in outdoor gas conveyance with the appearance of outdoor gas meter setting,which involves the addition of UPVC casing pipe as a protection technique to prevent the aging of PAP pipe.The method allows the PAP pipe to climb on the outer wall of building and get into user’s home directly after the connection with outdoor gas meter without any joints in the middle.Since 1996,the number of users has increased gradually and it achieves millions level globally today,including Europe,Asia,Oceania,South America and Africa.There were no quality and performance issues of using the PAP pipe in fuel gas conveyance indoor and outdoor in the past 20 years.In this paper,we put our effort on studying the effects of environmental temperature,sealing reliability,resistance to pipe pull-out,thermal compensation,and rat biting on PAP pipe and solve these problems.展开更多
文摘Polyethylene/aluminum/polyethylene(PAP)composite pipe has the advantages of corrosion resistance,limited joints and convenient installation.We started to use the PAP pipe in fuel gas conveyance 21 years ago.It has excellent performance in indoor gas application.Later,a unique method was designed to apply the PAP pipe in outdoor gas conveyance with the appearance of outdoor gas meter setting,which involves the addition of UPVC casing pipe as a protection technique to prevent the aging of PAP pipe.The method allows the PAP pipe to climb on the outer wall of building and get into user’s home directly after the connection with outdoor gas meter without any joints in the middle.Since 1996,the number of users has increased gradually and it achieves millions level globally today,including Europe,Asia,Oceania,South America and Africa.There were no quality and performance issues of using the PAP pipe in fuel gas conveyance indoor and outdoor in the past 20 years.In this paper,we put our effort on studying the effects of environmental temperature,sealing reliability,resistance to pipe pull-out,thermal compensation,and rat biting on PAP pipe and solve these problems.