TPi January 2012

copper tubes

Seamless, extruded and drawn copper and copper alloy

In the plumbing trade the size of copper tubing is measured by its nominal diameter (average inside diameter). Some trades, heating and cooling technicians for instance, use the outside diameter (OD) to designate copper tube sizes. The HVAC tradesman also uses this different measurement, in order not to confuse water pipe with copper pipe used for the HVAC trade, as pipe used in the air-conditioning trade uses copper pipe that is made at the factory without processing oils that would be incompatible with the oils used to lubricate the compressors. The OD of copper tube is always 1 / 8 " larger than its nominal size. Therefore, 1" nominal copper tube and 1 1 / 8 " ACR tube are the same tube with different size designations. The wall thickness of the tube, as mentioned above, never affects the sizing of the tube. Type K ½" nominal tube is the same size as Type L ½" nominal tube ( 5 / 8 " ACR).

forging brass, tellurium copper and nickel silver, in the form of hollows, sections, profiles, rods and wires. These alloys provide a combination of strength, anti-corrosion properties and oxidation resistance. The company also manufactures copper nickel tubes in LWC form, and has an in-house facility to make U-bend tubes, low finned tubes and surface enhanced finned tubes.

Multimetals Limited was founded in 1962 as a joint venture with Revere Copper and Brass Inc, USA. The company is a manufacturer of seamless extruded drawn copper and copper alloy products including tubes of 90/10, 95/5 and 70/30 cupro nickel, cunifer, aluminium brass, admiralty brass, 70/30 brass, 63/37 brass and naval brass conforming to various international standards. The company caters to industries such as air-conditioning, refrigeration, heat exchangers, nuclear and thermal power plants, shipbuilding and repairs, petroleumrefineries, sugar plants, defence establishments and naval warships. In addition to standard products, Multimetals manufactures other copper-based alloy semis, to customer requirements of chemical, mechanical, metallurgical and physical properties. The alloys include aluminium bronze, manganese bronze, naval brass, 90/10 copper nickel, 70/30 copper nickel,

Multimetals Ltd – India sales@multimetals.in www.multimetals.in

Copper tubes from Multimetals

Nissan Copper Limited – India marketing@nissancopper.com www.nissancopper.com

EEW-CTS Düsseldorf

The trade magazine for tube and pipe products

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SAW Pipes from stock or newly produced from Stock Plates in diameter 16” up to 48” Seamless Pipes from stock in diameters from 1” up to 24” Steel Plates from stock in wall thicknesses from 10mm up to 200mm Standard Piping Products from stock in diameters ½” up to 48” Special Piping Products produced from Stock Plates, Pipes or Forgings Material Grades: Various carbon- alloy- and stainless steel grades for structural-process and line pipe application.

2012 April

Features

Inspection equipment Small diameter high precision tubes Construction, building and structural tubes Plastic pipes Show issue: Tube Russia 2012

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Januar

July 2011

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Oil and gas pipelines Extruded tube Materials handling, logistics and packaging Show issue: Tube China 2012

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January 2012 Tube Products International