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Lawton Copper Tubes - The Nation's Copper Specialist

 

PVC Coated Copper Tubes

The Plastic that we are using for the tube coating is a Low Density Polyethylene along

with a World Wide UV stabiliser.

The Physical properties are as follows:

Mechanical

Melting point: 114°C
Vicat Softening Point 93°C   (This can be generally treated as the maximum operating temperature)
Brittleness Point: < -75°C
Hardness: 55 Shore D
Tensile Break: 13.40 MPa
Flexural Strength: 8.10 MPa
Elongation at Break 500%

 

Electrical

Volume Resistivity: >1015 Ohm-cm³
Surface Resistivity: >1015 Ohm-cm²

Resistance to some common chemicals below.

Polyethylene and Very Good Chemical Resistance

Acetatic acid
Amonium hydroxide 30%
Calcium hydroxide 30%
Diethylene glycol
Ethylene glycol
Ethanol 100%
Glycerin
Glycol
Hydrogen peroxide 30%
Mercury
Methanol
Potassium hydroxide 30%
Sodium hydroxide 30%

Polyethylene and Good Chemical Resistance

Acetone
Formaldehyde 10-40%
Gas oil
Caproic acid
Iodine
Isobutanol
Isopropanol
Mineral oil
Motor oil
Natural gas
Gasoline
Phenol
Tranformer oil
Vaseline

Polyethylene and Medium Chemical Resistance

Dibutylether
Ethylene acetate 100%
Furfurol 100%
Heptane
Paraffin

Polyethylene and Poor Chemical Resistance

Diethylether
Ethylenechloride
Hydrogen peroxide 90%
Methylene chloride

This range is ideal for use within walls, outside, underground and in aggressive atmospheres. The covering creates a thermal barrier reducing heat loss
underground and condensation from exposure in extreme weather conditions.

Tubes are specifically made in 5.8m lengths for direct loading and shipping in full containers. Tubes can withstand temperatures from -40 to +120 degrees centigrade.

Tubes can be bent (except 35-54mm) and jointed as per standard plain EN1057 tubes using EN1254 fittings.

To expose bare copper, plastic coating needs to be cut and pulled back away from the joint and flame (if brazing).

Once joint has been made coating needs returning back to original position and both joint and cut need to be protected using an impervious plastic tape.

 

 

 

pvc covered tube

 

Green PVC tube