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لوله سیم پیچ
ASTM B704 Alloy 625 Coiled Tubing
Meilong is a supplier of welded and redrawn, seamless and redrawn coiled tubing which are made from corrosion-resistant Alloy 625. We have been specializing in manufacturing coiled tubing used in the oil and gas industry.
ASTM B704 Alloy 625 Coiled Tubing for Control Lines
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.