| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a polyethylene-made electrofusion pipe reducing a cost to be excellent in pressure resistance and the other characteristic and capable of electrofusion and a polyethylene-made electrofusion joint reducing a cost to be excellent in pressure resistance for connecting this pipe by electrofusion. SOLUTION: In this electrofusion pipe and joint, as an inner layer 2 of the electrofusion pipe 1 or an outer layer 6 of the electrofusion joint 5, an intermediate high density polyethylene layer of 0.94 to 0.97 g/cm<3> density, 0.01 to 2 g/10 min MFR, and as an outer layer 3 of the electrofusion pipe 1 or an inner layer 7 of the electrofusion joint 5, a low intermediate density polyethylene layer of 0.92 to 0.95 g/cm<3> density, 0.01 to 2 g/10 min MFR, are integrally layered.</p> |
