Our coiled duplex stainless steel umbilical tubing is used for hydraulic control and chemical injection services.
Duplex stainless steel tubing for sub-sea umbilicals
Sub-sea umbilicals are control lines used in offshore wells where Christmas trees (an assembly of control valves, gauges and chokes that control oil and gas flow in a completed well) are installed on the ocean floor.
Umbilicals make up part of Tenaris’s SURF (Sub-sea Umbilicals, Risers and Flowlines) package of tubular products for offshore oil country tubular goods and line pipe applications.
We manufacture coiled duplex stainless steel umbilical tubing in sizes ranging from 3/8 in. to 2 in. outside diameter (OD). These high-pressure steel tubes, which are used for hydraulic control and chemical injection services in sub-sea oil and natural gas production facilities, are produced using 19D stainless steel strip (typically with 19.5% Cr and 3.5% Ni) and shipped with a zinc clad in order to ensure a service life of up to 30 years.
Umbilical rods are zinc-clad high-strength carbon steel rods that provide weight and rigidity to sub-sea umbilicals.