Tungum Tubing

Tungum Tubing Logo

Arrow Flow Solutions is a stocking distributor of Tungum tubes. Our staff has 15 years’ of experience solving offshore corrosion issues with Tungum tubes.

Tungum tube is unrivaled in pitting and crevice corrosion resistance with no recorded failures and an expected installation life of at least 35 years.

Arrow Flow Solution systems specified with Tungum tube include Instrument Air, Utility Air, Starting Air, Potable Water, Hydraulic Fluid, Nitrogen, Vents & Sounds, Black and Grey water, Flammable Gas, and Breathing Air.

No additional external protective treatment required

i.e. painting or coating

Compatible with Oxygen

Excellent Lifetime Cost

Excellent lifetime cost compared to other tubing options. Typically, 15% less costly than 6Mo Steel, Super Duplex tubing, and jacketed stainless steel tubing.

Corrosion Resistance

Excellent crevice corrosion resistance

Resistant to Seawater

Resistant to seawater and chloride stress corrosion

Great ductility

Fully Compatible

Tungum tube is fully compatible with typical 316 SS tube fittings.

Pitting Corrosion Resistance

Excellent pitting corrosion resistance

High strength to weight ratio

High working pressures

Same or better than 316 Stainless Steel



Tungum tubing has the approval of:

ABS – American Bureau of Shipping Type Approval

BAM – Federal Institute for Gaseous Oxygen Service, tested in accordance with ASTM G124-10 (2010)

FPAL – Achilles First Point Assessment for suppliers to the Oil & Gas Industry (Supplier No. 10054096)

IMCA – International Marine Contractors Association – Document D012 – approved for use in Oxygen systems

Shell Approval

Tungum features in the Shell Global Design and Engineering Standard, table 4 (instrumentation materials)  Selection of materials for life cycle performance (upstream facilities) – equipment DEP Feb 2013.

National and international specifications:

  • BS EN 12449 CW700R R430
  • ASTM B706-TF00

DNV GL – Det Norske Veritas ISO 9001: 2008

ASME – American Society of Mechanical Engineers Section 1, VIII, B31.1 & B31.3

USCG – United States Coast Guard

NORSOK – M-650 Qualification of manufacturers of special materials

Lloyds Register of Shipping

BP Approval GP36-15-1

BP has approved Tungum tubing for “non-process” applications GP36-15-1. Tungum has passed extensive testing and is segment defined for mitigating and preventing external corrosion on topside small bore tubing.

Defense Specifications:

  • Army AFS 4000
  • Navy NES 749 Part 3
  • Aircraft DTD 253A & DTD 5019