Tests: | Requirement/test standard | Initial type test | Self-monitoring | Third-party control |
Appearance and surface | When viewed without magnification the internal and external surfaces of the fittings were smooth, clean and free from grooving, blistering, impurities, pores and other surface irregularities likely to prevent conformity to the standard. | Yes | 1 x per cavity per hour | 1 x per year |
Color | White color | Yes | 1 x per cavity per hour | 1 x per year |
Dimension and tolerance | Acc. to Table7 & Table11 | Yes | 1x per 4 hour | 1 x per year |
Softening temperature | Acc. to EN 727, VST≥ 79°C | Yes | One per production shift | 1 x per year |
Effect of Heating | At 150°C, heating time: 30 min, no damage | Yes | One per production shift | 1 x per year |
Evaluated temperature cycling for application area B | Acc. to EN 1055, using test assembly b, figure 2. No leakage. DN≤50：≤3mm DN＞50：≤0.05dn | Yes | No | At any new design or formulation |
Marking | ERAR EN 1329 尺寸 PVC-U B | Yes | One per production shift | 1 x per year |
