Model 3/8 -Capillary Tube
Due to our unique manufacturing processes and strict quality control, our 3/8” capillary tube outperforms the best on the market. Our Duplex 2205 Capillary Line is ideal for use in oil and natural gas wells due to its higher strength, resistance to pitting, corrosion, and chloride stress corrosion cracking. For injection applications, the tubing is self-supporting inside the production casing and facilitates the injection of chemicals to enhance production flow rate, inhibit corrosion and de-water. In control line applications, the tubing is strapped to the production casing and facilitates the hydraulic actuation of surface-controlled subsurface equipment such as valves.
2205 is a nitrogen-enhanced duplex stainless steel alloy. When heat-treated, the composition of 2205 (Listed below) produces a microstructure of a roughly equal mixture of austenitic and ferritic phases that results in a yield strength approximately double that of austenitic alloys such as 316L, as well as superior corrosion resistance in many hostile environments.
The higher chromium content in 2205, as well as the molybdenum and nitrogen components, results in better chloride pitting and crevice corrosion resistance than found in standard austenitic stainless steels such as 304L and 316L.
The strip is passed through a series of rollers to form it into a tubular cross-section. The tubing is continuously welded along the seam with a gas tungsten arc welding (GTAW) process. To achieve the desired length of tubing, individual lengths are joined by orbital welding. Continuous eddy current testing is performed to detect holes. Exiting the tube mill, the tubing is passed through an induction coil and annealed at between 1,070°C – 1,100°C.
- Hydraulic Control Lines
- Coiled Tubing
- Capillary Tubing
- Heat Exchanger Tubing
- Bubble Tube
- Chemical Injection
- Laboratory Instrument Tubing