Item:

Technical requirements:

outward prearrange

Internal and external surface of pipes should be smooth, flat, and defects like air bubble, obvious scratch, dents, impurity, and uneven color are not allowed. pipe end should be cut flatland vertical with pipe axis.

thermal stability(200°C).min

>20

elongation at break %

≥350

longitudinal retraction rate(110°C).%

≤3

melt flowing rate(MFR).(190°C.5kg)g/10min

Before and after processing, MFR change rate <20%.

hydrostatic strength

a.20°C,hopp stress:12.4mpa, time to rupture ≥100h

b.80°C,hopp stress:5.4mpa, time to rupture ≥165h

c.80°C,hopp stress:5.0mpa, time to rupture ≥1000h