... and economic rapid promotion, after 60 years of development, polyethylene pipe has become the use of excellent performance, design theory, ... and physical propertiesPE pipe between high performance of fuel gas, the density polyethylene, maintain between the high density polyethylene rigidity, and has ... events.Update Date:2010/6/10 2:37:44 Polyethylene gas pipe fitting HDPE gas pipe fitting PE gas ...