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 |