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ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing

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ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing

ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing
ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing

Large Image :  ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing

Product Details:
Place of Origin: China
Brand Name: Meilong Tube
Model Number: 3/8''OD x 0.049''WT
Payment & Shipping Terms:
Minimum Order Quantity: 1 coil
Packaging Details: Wooden case
Delivery Time: In 7 days
Payment Terms: T/T, L/C
Supply Ability: 150 metric tons per month

ASTM B423 Geothermal Nickel Alloy Tubing Control Line Tubing

NDT: 100% Length Is Eddy Current Tested Process: Cold Drawing
Pressure Rate: Above 10000 Psi Condition: Annealed
Pressure Test: 100% Length Is Hydrostatic Tested Material: Super Duplex 2507, Incoloy 825, Inconel 625
Orbital Welds: Continuous Length Without Orbital Welds Length: Up To 12000 Meters
High Light:

ASTM B423 Nickel Alloy Tubing


Annealed Nickel Alloy Tubing


Control Line Tubing ASTM B423

ASTM B423 Geothermal Tubing Control Line with Close Dimensional Tolerance Size Customization

Product Description:

Meilong Tube's Downhole Control Lines

Meilong Tube's downhole control lines are used primarily as communication conduits for hydraulically operated downhole devices in oil, gas, and water-injection wells, where durability and resistance to extreme harsh conditions are required. These lines can be custom configured for a variety of applications and downhole components.

All encapsulated materials are hydrolytically stable and are compatible with all typical well completion fluids, including high-pressure gas. The material selection is based on various criteria, including bottomhole temperature, hardness, tensile and tear strength, water absorption and gas permeability, oxidation, and abrasion and chemical resistance. Control lines have undergone extensive development, including crush testing and high-pressure autoclave well simulation. Laboratory crush tests have demonstrated the increased loading under which encapsulated tubing can maintain functional integrity, particularly where wire-strand “bumper wires” are used.

Duplex 2507

Duplex 2507 is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance. Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.

Usage of Duplex 2507 should be limited to applications below 600° F (316° C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507. Duplex 2507 possesses excellent mechanical properties. Often a light gauge of 2507 material can be used to achieve the same design strength of a thicker nickel alloy. The resulting savings in weight can dramatically reduce the overall cost of fabrication.

Corrosion Resistance: 2507 Duplex is highly resistant to uniform corrosion by organic acids such as formic and acetic acid. It is also highly resistant to inorganic acids, especially if they contain chlorides. Alloy 2507 is highly resistant to carbide-related intergranular corrosion. Due to the ferritic portion of the duplex structure of the alloy it is very resistant to stress corrosion cracking in warm chloride containing environments. Through additions of chromium, molybdenum and nitrogen localized corrosion such as pitting and crevice attack are improved. Alloy 2507 has excellent localized pitting resistance.



Features, Advantages and Benefits

Our control lines offer a number of features, advantages, and benefits.

Features: We provide control lines that are delivered nicely in orbital-weld-free lengths up to 40,000 feet (12,192 meters).

Advantages: We know that no two wells are alike, so our single, dual, or triple flat-packs, combined with downhole electrical cables and/or bumper wires, make the process easier for you, ensuring your control lines are handled properly during deployment.

Benefits: The welded-and-plug-drawn production method provides you with a smooth, round tube, for long-term metal sealing of terminations. Also, we can provide encapsulation materials that are tailor-fit to match your well conditions, ensuring longevity and reliability.


Technical Parameters:

Meilong Tube provides standard dimension tolerances and schedules for different standards such as ASTM A789 / ASME SA789, UNS S32205, and UNS S32750.

The size and OD tolerance, and wall tolerance for the OD less than 1/2 inch and equal or more than 1/2 inch are as follow:

  • OD less than 1/2 inch: OD tolerance ± 0.004', wall tolerance ± 10%
  • OD equal or more than 1/2 inch: OD tolerance ± 0.005', wall tolerance ± 8%

The working, burst, collapse and test pressure requirements for Super Duplex 2507 with UNS S32750 using Meilong Tube Standards are listed below:

Alloy UNS O.D. W.T. Working Pressure Burst Pressure Collapse Pressure Test Pressure
Super Duplex 2507 S32750 1/8 0.125 0.028 19,177 47,169 19,177 21,025
Super Duplex 2507 S32750 1/8 0.125 0.035 23,971 58,961 23,971 26,100
Super Duplex 2507 S32750 1/4 0.250 0.035 11,986 29,481 11,986 13,050
Super Duplex 2507 S32750 1/4 0.250 0.049 16,816 35,949 15,817 18,850
Super Duplex 2507 S32750 1/4 0.250 0.065 22,300 45,448 19,522 24,650
Super Duplex 2507 S32750 3/8 0.375 0.035 8,009 25,138 8,372 8,700
Super Duplex 2507 S32750 3/8 0.375 0.049 11,205 28,536 11,296 12,325
Super Duplex 2507 S32750 3/8 0.375 0.065 14,873 33,141 14,346 16,675
Super Duplex 2507 S32750 3/8 0.375 0.083 18,977 39,426 17,379 21,025
Super Duplex 2507 S32750 1/2 0.500 0.049 8,408 25,532 8,753 9,425
Super Duplex 2507 S32750 1/2 0.500 0.065 11,150 28,470 11,259 12,325
Super Duplex 2507 S32750 1/2 0.500 0.083 14,237 32,275 13,838 15,950
Super Duplex 2507 S32750 5/8 0.625 0.049 6,719 23,918 7,137 7,250
Super Duplex 2507 S32750 5/8 0.625 0.065 8,898 26,056 9,243 10,150
Super Duplex 2507 S32750 5/8 0.625 0.083 11,386 35,306 11,459 12,325
Super Duplex 2507 S32750 3/4 0.750 0.049 5,593 22,921 6,029 5,800
Super Duplex 2507 S32750 3/4 0.750 0.065 7,427 24,587 7,827 7,975
Super Duplex 2507 S32750 3/4 0.750 0.083 9,480 26,647 9,770 10,150


These are some of the uses for coiled alloy tubing:

  • Capillary (chemical injection)
  • Bare and encapsulated hydraulic control line (for subsea safety valves)
  • Velocity strings, work strings, and steel umbilicals
  • Geothermal

Coiled alloy tubing is ideal for these uses because it is capable of withstanding corrosion, vibration, high pressures, and the harsh environments encountered in subsea situations. Furthermore, it is reliable, easy to install, and provides superior performance.



Welcome to Meilong Tube for your customized High Pressure Hydraulic Geothermal Tubing needs. Our quality Geothermal Tubing Capillary Tube is manufactured from Nickel Alloy to ASTM A789, ASTM B704, ASTM B423, ASTM B444 and other standards for a variety of sizes, with Controlled Ovality And Eccentricity, and within Close Dimensional Tolerance.

We offer a minimum order quantity of 1 coil and our packaging is Wooden case. Delivery time is within 7 days and we accept T/T, L/C payment terms. Our capacity to supply is 150 metric tons per month. Furthermore, all our Geothermal Tubing is 100% length is hydrostatic tested, with Pressure rate Above 10000 Psi.


Support and Services:

Technical Support and Services for Geothermal Tubing

Our team of professionals are available to assist with any technical support and service requirements related to Geothermal Tubing. Our team is composed of experienced technicians and engineers who are well-versed in the installation, operation, and maintenance of geothermal tubing. Our team is available to answer all your questions related to the product, from simple troubleshooting to complex system installations.

We also provide other services such as on-site inspections, maintenance and repair, and training courses. Our training courses are designed to provide you with the knowledge and skills needed to safely and efficiently use geothermal tubing. We also provide a wide range of technical support services such as troubleshooting, system design, and installation support.

If you need any assistance with Geothermal Tubing, please don't hesitate to contact us. Our team of professionals is here to help you in any way possible.


Packing and Shipping:

Packaging and Shipping of Geothermal Tubing

Geothermal tubing is carefully packaged to ensure it arrives in excellent condition. It is packed in a cardboard box containing foam cutouts that protect the tubing and prevent it from shifting during transit. The box is then sealed with a tamper-evident seal to ensure its integrity.

Shipping for geothermal tubing is usually done via ground shipping. For larger orders, air shipping can be arranged. Delivery times depend on the size of the order and the shipping destination. Most orders are shipped within 1-2 days.

Contact Details
Suzhou Meilong Tube Co., Ltd.

Contact Person: Mr. John Chen

Tel: +8618551138787

Fax: 86-512-67253682

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