PE pipe fitting for water supply performance requirement |
Name | Requirements | Test parameters |
Hydrostatic strength | ≥100h No leaks no failure | 20degree, PE 80:10.0MPa PE100:12.4MPa |
≥165h No leaks no failure | 80degree, PE 80:4.6MPa PE100:5.5MPa |
≥1000h No leaks no failure | 20degree, PE 80:4.0MPa PE100:5.0MPa |
(MFR)Melt flow rate | Change in MFR by processing<±20% | 10min |
Thermal stability | ≥20min | 200degree |
Cohesive resistance for electrofusion socket fitting | Length of intiation rupture in brittle failure≤L2/3 | 23degree |
Cohesive resistance for electrofusion socket fitting | Rupture surface in brittle failure≤25% | 23degree |
Tesile strength for butt fusion fitting-spigoted fittings | Test to failure, ductile: pass; brittle: fail | 23degree |
Impact resistance of tapping tees | No leaks, no failure | Mass of striker(2500±20)g; Height:(2000±10)mm |
Mechanical joints |
Leaktingtness under internal pressure | No leaks, | 1h 1.5×pipe(PN,Nominal pressure) |
Leaktingtness under internal pressure when subjected to bending | No leaks, | 1h 1.5×pipe(PN,Nominal pressure) |
External pressure test | No leaks, | 1h P=0.01MPa,1h P=0.08Mpa |
Resistance to pull out under constant longitudinal force | No pull-out or separation of the pipe from the fitting | 1h 23degree |