Technical Zone

Useful information about Tungum Tubing


Strong Environmental Benefit

Tungum Tubing has a strong benefit to the environment, as well as an economic advantage, when compared to statinless steel over the lifetime of a rig fit.

Using stainless steel you can expect 5-10 refits over the life of a rig, plus the costs involved in rig shut down and ‘old’ tube disposal. To benefit from reduced operating costs of Tungum Tubing there will be an initial higher outlay, which will be recovered several times over during the typical lifetime of a facility. For example, the price of instrumentation tubing for a standard oil rig using stainless steel compared with using Tungum Tubing is approximately half.

Relative Cost-Benefit v Stainless Steel

Corrosion Resistance

One of the main benefits of Tungum Tubing is its excellent resistance to corrosion.

Tungum Alloy has a high level of general corrosion resistance, allowing it to be specified for use in systems containing, or operating in the presence of a variety of substances and solutions.

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Designing With Tungum

Tungum Alloy tubes are solid drawn (seamless), and are supplied in the “W.P” (precipitation hardened) condition within the tensile range required to meet the appropriate specification. Hard, as drawn, tube may be supplied on request, within the tensile range of 550-664 N/mm2 (35-43 Tons/sq. in.) with an average V.P.N. hardness of 215.

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Length of Tungum Tube

Tube to specification BS EN12449 CW700R is supplied in random lengths of 5.791 metres ( 19 feet ). Tubes supplied to DTD specifications are in random lengths of 4.57 / 5.18 metres (15 / 17 feet ). Subject to prior agreement, different lengths of tubing can be supplied.

Quality Accreditations, Approvals and Specifications


Tungum Tubing holds a series of quality accreditations and approvals across international markets.

  • Det Norsk Veritas (DNV) approved ISO 9001: 2008
  • BP approval DWGOM
    GP 36-15-1
  • Lloyds Register of Shipping
  • ASTM B706-TF
  • BS EN 12449 CW 700R