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

附件\BS   1329表7.png

附件\BS   1329表11.png

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

Yes

One per production shift

1 x per year