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Maksal

Maksal™ Tubes (Pty) Ltd. is South Africa’s leading manufacturer of Copper tubing and Copper busbar, extrusions and profiles. Maksal™ has a long tradition of service, providing our customers with quality products. Our world standard production facilities are backed up by an excellent support service including engineering and technical development, marketing and finance aimed at ensuring that Maksal™ products meet your requirements
Refrigeration Tube is manufactured generally in accordance with ASTM B 280-88 and ASTM B 743-88 for use with refrigerant gases. All tubes are thoroughly degreased and tube ends are capped to prevent the ingress of moisture (coil ends are capped). Coils are separated by paper / plastic sheets supplied in cardboard cartons.

ACR Tubing

ACR Tubing

MAKSAL™ STANDARD

Available in 50ft coils, 15.24m coils. Other sizes available on request.

General Specifications

Application: Used in supermarkets, cold rooms, display fridges & air conditioners for the connection, repairs, or alteration of air conditioning of refrigeration units in the field or under construction.
Quality: Maksal™ ACR tubing is manufactured to consistently meet the demands of the industry and is compatible with all refrigerants.
Cleanliness: Bore quality meets the 0.038 g/m2 ASTM B280 specified limit.
Material: C12200, Cu 99.9%min, P 0.015 – 0.040%
Mechanical Properties: Tensile Strength 205 MPa / min
Yield Stress 8 MPa
Elongation min 3%
Hardness > 40 – 50 VPN
Soft Annealed
Temper: Soft Annealed.
Packaging: End capped, double layer coiled and shrink wrapped.
NOTE:
COILS ARE PACKED IN CARDBOARD CARTONS WITH RED PRINTING AND PALLETIZED.
Joining: Suitably connected by means of capillary solder fittings.
Bending: Suitable for bending with or without specialized tooling.
Length: 50ft or 15.24m

 

MAKSAL™ ECONOMICAL

Available in 50ft coils, 15.24m coils. Other sizes available on request.

General Specifications

Application: Used in supermarkets, cold rooms, display fridges & air conditioners for the connection, repairs, or alteration of air conditioning of refrigeration units in the field or under construction.
Quality: Maksal™ ACR tubing is manufactured to consistently meet the demands of the industry and is compatible with all refrigerants.
Cleanliness: Bore quality meets the 0.038 g/m2 ASTM B280 specified limit.
Material: C12200, Cu 99.9%min, P 0.015 – 0.040%
Mechanical Properties: Tensile Strength 205 MPa / min
Yield Stress 8 MPa
Elongation min 3%
Hardness > 40 – 50 VPN
Soft Annealed
Temper: Soft Annealed.
Packaging: End capped, double layer coiled and shrink wrapped.
NOTE: COILS ARE PACKED IN CARDBOARD CARTONS WITH BLUE PRINTING AND PALLETIZED
Joining: Suitably connected by means of capillary solder fittings.
Bending: Suitable for bending with or without specialized tooling.
Length: 50ft or 15.24m

MAKSAL™ STANDARD

MAKSAL™ ECONOMICAL

Available in 19ft (5.800m) and 20ft (6.096m) lengths.

General Specifications

Application: Used in supermarkets, cold rooms, display fridges & air conditioners for the connection, repairs, or alteration of air conditioning or refrigeration units in the field or under construction.
Quality: Maksal™ ACR tubing is manufactured to consistently meet the demands of the industry and is compatible with all refrigerants.
Cleanliness: Bore quality meets the 0.038 g/m2 ASTM B280 specified limit.
Material: C12200, Cu 99.9%min, P 0.015 – 0.040%
Mechanical Properties: Tensile Strength 290 MPa / min
Yield Stress 205 Mpa
Elongation min 3%
Hardness > 100VPN
Temper: Hard Drawn.
Packaging: Bore internally cleaned and capped. 3/8” – 2 1/8” Internally plugged. > 2 1/8” Externally capped.
NOTE: Also available in ultra cleanliness nitrogen pressurised tubing.
Joining: Suitably connected by means of capillary solder fittings.
Bending: Not suitable for bending.

Pressure Ratings and Allowable Stresses

The allowable internal pressure for any copper tube in service is based on the Barlow formula for thin-walled, hollow cylinders used in the ASME B31 Code, for Pressure Piping.

The value of ‘S’ is the allowable design strength for continuous long-term service of the tube, as determined by the ASME Boiler and Pressure Vessel Code, Section 1 – Materials.

Allowable stresses for annealed and drawn temper copper tube are shown in the table below. They are only a small fraction of copper’s ultimate tensile or burst strength. In system design, joint ratings must also be considered, as the lower of the two ratings (tube or joint) will govern the installation. The rated joint strength in soldered tube systems often governs design. However, annealed ratings must be used in brazed systems since the brazing operation may anneal the tube near the joints.

Allowable stresses for Copper Tube as a Function of Temp.

 

 

Barlow formula for thin walled, hollow cylinders
= 2st

D – 0.08t
P = Allowable Pressure
S = Allowable Stress
t = Wall Thickness
D = Outside Diameter

 

Conversion Factors STRESS: Psi x 0.006895 = MPa
MPa x 145.04 = Psi
TEMPERATURE: F = [(F – 32) / 1.8]C
C = [(C – 1.8) / 32]F