Internal/External Pipe and Casing Coatings & Linings, Nickel Coating and Plating
PolyEXT Internal Tubing Lining

PolyEXT Internal Tubing Linings Technical Data & Specifications

Description: High Density Polyethylene

PolyEXT is a High Density Polyethylene (HDPE) liner, intruded into tubing. It is designed for use at elevated temperatures and pressures in production and injection tubing. It is a tough, flexible lining which will resist damage and cracking during handling. The relative low co-efficient of friction of the lining allows for increased hydraulic efficiency.


Lining Properties

 

Nominal Values

Property

ASTM Test Method

SI Units

English Units

 

 

 

 

Density, Natural

D1505

0.946 gm/cc

--

 

 

 

 

Density, Black

D1505

0.955 gm/cc

--

 

 

 

 

Melt Index (190°C/2.16 kg)

D1238

0.07 gm/10 min.

--

 

 

 

 

Flow Rate (190°C/21.6 kg)

D1238

8.5 gm/10 min.

--

 

 

 

 

Tensile Strength @ Ultimate

D638

34.5 MPa

5000 psi

 

 

 

 

Tensile Strength @ Yield

D638

24.1 MPa

3500 psi

 

 

 

 

Ultimate Elongation

D638

>800%

>800%

 

 

 

 

Flexural Modulus

D790

938 MPa

136,000 psi

 

 

 

 

2% Secant

 

 

 

 

 

 

 

Environmental Stress Crack Resistance (ESCR)

 

 

 

 

 

 

 

FO, Condition C

D1696

>10,000 hrs.

>10,000 hrs.

 

 

 

 

PENT

F1473

>100 hrs.

>100hrs.

 

 

 

 

Brittleness Temperature

D746

<-117°F

<-180°F

 

 

 

 

Hardness, Shore D

D2240

64

64

 

 

 

 

Vicat Softening Temperature

D1525

124°C

255°F

 

 

 

 

Izod impact Strength (Notched)

D256

0.37 KJ/m

7ft lb/in

 

 

 

 

Volume Resistivity Coefficient

D991

>1015 ohm-cm

--

 

Thermal Expansion Coefficient

 

2xlO-4cm/cm/°C

1.0xlO-4in/in/°F

 

 

 

 

 

 

 

 

CELL CLASSIFICATION:

D3350

345464C

Grade PE36

 

 

 

 

MATERIAL CLASSIFICATION:

D1248

Type III

Class C

 

 

 

 

 

 

Category 5

 

 

 

 

 

PPI HYDROSTATIC DESIGN BASIS (HDB)

D2837

11.0 MPa @23°C

1,600psi @73.4°F

 

 

 

 

(As listed in PPI TR-4)

 

5.5MPa@60°C

800psi @ 140°F

 

 

 

 

PPI HYDROSTATIC DESIGN STRESS (HDS)

 

 

 

5.5MPa@23°C

 

800 psi @ 73.4°F

 

 

 

 

 

 

 

 

 

 

 

 

 

(As established by the Hydrostatic Stress Board (HSB) of the Plastics Pipe Institute (PPI)

 

 

 

 

 

 

 

 

 

* Nominal values are intended to be guides only, and not as a specification limit.