Umbilical Tubing

Meilong is a supplier of welded and cold drawn, welded and seamless umbilical tubing which are made from corrosion-resistant austenitic, duplex, super duplex stainless steels and nickel alloy grades. We have been specializing in manufacturing coiled umbilical tubing used in the oil and gas industry.

Tubing for Chemical Injection in umbilicals
One of the main challenges in the upstream processes of the oil and gas industry is to protect pipeline and process equipment against waxes, scaling and asphalthane deposits. The engineering disciplines involved in flow assurance play an essential part in mapping the requirements that reduce or prevent loss of production due to pipeline or process equipment blockage. Steel tubing from Meilong is applied to umbilicals and chemical injection systems play an effective role in chemical storage and delivery at an optimizing flow assurance.

Meilong is a supplier of welded and cold drawn, welded and seamless umbilical tubing which are made from corrosion-resistant austenitic, duplex, super duplex stainless steels and nickel alloy grades. We have been specializing in manufacturing coiled umbilical tubing used in the oil and gas industry.

Stainless Steel Coiled Tubing in umbilical that

Provides hydraulic power to subsea control system

Delivers chemicals for subsea injection at the subsea Christmas tree or downhole

Can provide bulk methanol

Can provide gas for gas lift

Coiled Tubing for hydraulic control line in umbilicals

A direct hydraulic control umbilical provides direct hydraulic control of each valve on a subsea christmas tree, through a bundle of tubes from the topsides hydraulic power unit (HPU) to the subsea tree. No electrical power or signal is required. Actuation of valves is by the supply of hydraulic power to the relevant tube. This is accomplished by opening the relevant valve on the manifold located on the topsided HPU. This type of umbilical is limited to subsea production systems with short offsets to the host and few trees.

Thanks to the experience and expertise gained in the production and inspection, the tubes supplied by Meilong fully meet stringent quality requirements of the oil & gas industries. The tubing deployed in the umbilicals used in aggressive subsea and downhole conditions.

Coiled tubing for Chemical Injection in umbilicals

One of the main challenges in the upstream processes of the oil and gas industry is to protect pipeline and process equipment against waxes, scaling and asphalthane deposits. The engineering disciplines involved in flow assurance play an essential part in mapping the requirements that reduce or prevent loss of production due to pipeline or process equipment blockage. Steel tubing from Meilong is applied to umbilicals and chemical injection systems play an effective role in chemical storage and delivery at an optimizing flow assurance.

Our tubing is characterized with integrity and quality to be specially used in subsea conditions in the industries of oil and gas extraction.

Available Alloy Grades for umbilical tubing

Stainless Steel Umbilical Tubing Features

Close dimensional tolerances

Enhanced mechanical properties

Superior surface finish

High cleanness of inside surface

Controlled ovality, eccentricity

Stainless Steel Tubing Types

TIG welded and cold drawn

Seamless and cold drawn

Coiled Tubing Dimension

Outside Diameter: 1/8’’ – 1/2’’ (3.175 mm – 12.7 mm)

Coiled tubing length: up to 32,808 feet (10,000 m)

Coiled tubing with minimum orbital welds reduces the risk of leakages when connecting tubes, and suitable for delivery for customers need.

The tubes are delivered with plastic caps for protection from potential contamination during storage.

Straight Tubing Dimension

Outside Diameter: 1/4’’ – 1’’ (6.35 mm – 25.4 mm)

Straight tubing length: up to 82 feet (25 m)

Delivery condition

Cold worked

Bright annealed

Annealed and polished

Packing

Coiled tubing is level wound on the spool/reel

metal reels and marking can be specified by the customer

Straight tube is packed in long wooden case, and well protected in long transportation

Application

Control line

Chemical injection line

Hydraulic line

Electrical line

Flying lead