Technical Specifications

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copper-tubing-plumbers-portal2Technical Specifications

CTA 460/0 EXTRA LIGHT - HARD DRAWN (5,5m straight lengths)
Identification: Yellow or clear end-caps on bundle
35mm tube, pressure tested and marketed “CTA… mm OD SABS 460/0 BN…” Pressure tested to… BAR… DATE

Tubing Size (mm)Nominal wall thickness (mm)Inside diameter/bore size (mm)Theoretical mass (kg/m)Maximum working pressure (Bar)Recommended Usage (All sizes)
15 (HD)0,50140.20348.0Recommended for above ground use only and should not be bent. Local annealing to produce a bend or offset is NOT recommended. Tubing is ideally suited for use with soldered capillary fittings. Use of compression fittings with CTA 460/0 is
22 (HD)0.6020.80.36039.3
28 (HD)0.6026.80.46030.9
35 (HD)0.7533.50.71930.9
42 (HD)0,9040.21.03630.9
54 (HD)1.2051.61.77432.0
67 (HD)1.50642.75132.2
76 (HD)1.7072.63.53732.2
108 (HD)2.30103.46.80730.7
     NOT recommended
Hard drawn, thin-walled tubes are recommended for above ground use because of copper ability to withstand extreme temperatures. The thin wall makes it unsuitable for underground usage due to a lack of flexibility. We don’t recommend bending the tube, however, a change in direction using SANS 460 Class 0 may be made using capillary fittings. 

We recommend that when using compression fittings, you never use brass rings as they are extremely hard and can cut too deeply into the copper wall, causing it to snap off at the joint. 

Local annealing in order to produce a bend, offset or crossover is not recommended. Nor is brazing of SANS 460 Class 0 from 15mm to 28mm O.D. using capillary fittings and the use of oxy-acetylene. 

CTA 460/1 LIGHT - HALF HARD (5,5m straight lengths)
Identification: Orange end-caps on bundle
35mm tube, pressure tested and marked “CTA… mm OD SANS 460/1 BN…” Pressure tested to… DATE

Tubing Size (mm)Nominal wall thickness (mm)Inside diameter/bore size (mm)Theoretical mass (kg/m)Maximum working pressure (Bar)Recommended Usage (All sizes)
15 (HD)0.7013.60.28051.3Recommended for above ground use only. Should only be bent with a bending tool having inner and outer formers. Spring bending is not recommended. Tubing is ideally suited for use with compression and/or soldered capillary fittings. Care should be taken when soldering due to the increased wall thickness.
22 (HD)0.9020.20.53245.0
28 (HD)0.9026.20.68335.4
35 (HD)1.2032.61.13637.7
42 (HD)1.2039.61.37131.4
54 (HD)1.2051.61.77432.0
67 (HD)1.50642.75132.2
76 (HD)1.7072.63.53732.2
108 (HD)2.30103.46.80730.7
The half hard, thin-walled tube is also meant for above ground use. As opposed to the hard drawn, thin-walled tube manufactured by Copper Tubing Africa, this tube can be bent using a bending tool with inner and outer formers. It is also ideally suited for use with capillary or compression fittings.

We don’t recommend brazing of SANS 460 Class 1 from 15mm to 28mm O.D. using capillary fittings. Nor do we recommend the use of oxy-acetylene. The SANS 460 Class 1 is ideally suited for the drawing of T-joints. 

CTA 460/2 MEDIUM - HALF HARD (5,5m straight lengths)

Identification: Brown end-caps on bundle

35mm tube, pressure tested and marked “CTA… mm OD SANS 460/2 BN…” Pressure tested to… BAR… DATE

Tubing Size (mm)Nominal wall thickness (mm)Inside diameter/bore size (mm)Theoretical mass (kg/m)Maximum working pressure (Bar)Recommended Usage (All sizes)
15 (HD)1.00130.39273.3Recommended for above ground use only and should not be bent. Local annealing to produce a bend or offset is NOT recommended. Tubing is ideally suited for use with soldered capillary fittings. Use of compression fittings with CTA 460/0 is NOT recommended.
22 (HD)1.00200.58850.0
28 (HD)1.2025.60.90047.1
35 (HD)1.50321.40747.1
42 (HD)1.50391.70139.3
54 (HD)2.00502.91253.3
67 (HD)2.00633.64043.0
76 (HD)2.00724.15037.9
108 (HD)2.501037.38533.3
CTA 460/3 HALF HARD (5,5m straight lengths)
Identification: No end-caps on bundle

35mm tube, pressure tested and marked “CTA… mm OD SANS 460/3 BN…” Pressure tested to… BAR… DATE

Tubing Size (mm)Nominal wall thickness (mm)Inside diameter/bore size (mm)Theoretical mass (kg/m)Maximum working pressure (Bar)Recommended Usage (All sizes)
15 (HD)1.2012.60.46488.0Designed for use underground. Subject to special conditions. Can be bent using a bending tool and should be lagged. Spring bending is not recommended. Tube and DZR compression fittings ideally suited for underground use. When used above ground, special care should be taken.
22 (HD)1.50190.86175.0
28 (HD)1.50251.11358.9
35 (HD)2.00311.84862.9
42 (HD)2.00382.24052.4
54 (HD)2.50493.60566.7
67 (HD)2.50624.52553.7
76 (HD)2.50715.15247.4
108 (HD)3.20101.69.39042.7
The half hard tube features superior bending qualities. Under normal conditions, it may be used for underground applications. Normal conditions in this context refer to non-aggressive soils. 

The 28mm tube in this class is perfectly suited for brazing and for drawing of T-joints. It is the only class that can be bent using internal bending springs, however, we urge that you take care when installing the tube underground as it should be protected against external corrosive materials. 


Specifications for Copper Tube

SANS 460 Class 0:


A hard drawn thin-walled tube for use without bending, and recommended for above ground use only. Hard drawn tubing is not recommended for underground use due to its thin wall and lack of flexibility. Any change of direction using SANS 460 Class 0 should be made using capillary fittings.


Local annealing in order to produce a bend, offset or crossover is not recommended. Oxyacetylene brazing of SANS 460 Class 0 using capillary fittings is not recommended.


SANS 460 Class 1:


A half hard thin-walled tube for above ground use only. This tube can be bent using a bending tool with inner and outer formers. Spring bending is not advised due to the spring being too loose in the tube and the walls of the tube collapsing. SABS 460 Class 1 - 28mm to 108mm is ideally suited for the drawing of “T” joints.


SANS 460 Class 2:



A half hard, heavy gauge tube with excellent bending qualities. This class is also used underground under normal conditions i.e. non-aggressive soils. This is the only class that can be bent by using an Internal Bending Spring. Care should be taken when installing tube underground. The tube should be protected against external corrosion using CXP tape. SABS 460 Class 2 - 28mm to 108mm is ideally suited for the drawing of “T” joints.


SANS 460 Class 3:



This class is a heavy, thick walled, half hard copper tube with excellent bending qualities, designed specifically for underground use where soil movement takes place. Care should be taken when installing tube underground and it should be protected against external corrosion using CXP tape.


CTA Blue Tube:



A hard drawn copper tube for above ground use only. Designed for higher chloride-bearing waters and is used to avoid Type 1 pitting corrosion. Any change of direction using Blue Tube should be made by using fittings. Blue Tube 28mm - 108mm undergoes a pressure test as well as an additional cleaning process before entering the local market.
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