Dane Chang, Carl Baker
Papers # 2016 Berlin
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 pipe in these applications is its temperature capability. Typically, polyethylene pipe can be safely used at temperatures up to 60°C (140°F). Projects that involve higher temperatures have historically required alternative materials. A bimodal high density polyethylene (HDPE) resin with an 82°C (180°F) pressure rating has recently been developed for demanding pipe applications. This resin qualifies in the highest pressure rating category with both ISO PE100 and ASTM PE4710 listings. In addition, it has excellent resistance to both slow crack growth and rapid crack propagation. It expands the capability of traditional polyethylene material to more severe service environments and has been used successfully in North American oil and gas gathering and transporting applications in both solid wall and composite pipe structures. Key physical and performance properties will be discussed.