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MTSCO provides stainless steel and nickel alloy product solutions for global industrial piping projects, serving industries such as oil and gas, chemicals, marine, and heat exchange equipment. For control line products, MTSCO established its own factory, Siri Tubing, in 2024, specializing in the production of welded coiled tubing, capillary tubing, control line tubing, and multi-core cables, all of which are ISO-certified. Leveraging our in-house manufacturing capabilities, MTSCO ensures more consistent quality control, reliable delivery coordination, and robust project support. We do more than just sell products—we are your trusted supply chain partner.
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ASTM A269 TP316L Welded Coiled Tubing for Oil and Gas Control Lines
Specifications
Item | Details |
Product Type | Welded Coiled Tubing |
Material Grade | TP316/ TP316L/ TP316Ti (304/304L, S31803/2205, S32750/2507, alloy 825, alloy 625 available) |
Outer Diameter | 3.18-38.1mm (1/8"-11/2") |
Wall Thickness | 0.4–2.54 mm (0.016–0.1") |
Length | <15000 m (<50,000 ft) |
Standards | ASTM A269 / ASTM A249 |
Manufacturing Process | 100% Laser Welding, Cold Drawing, Bright Annealing |
Pressure Test | Conventional 5000 PSI / Max. 15000 PSI |
Inspection | Appearance, PMI, Size, Airtightness, ET, Hydro Pressure Test |
Certificates | ISO |
Packaging | Plastic Reel, Wooden Reel, Solid Wooden Reel, Iron Reel, Wooden Box |
Optional Service | Encapsulation, Customized Length, Third-party Inspection |
Company and Factory Introduction
As a leading supplier of industrial stainless steel piping systems, MTSCO has established a strong presence in global engineering and EPC projects through its “Factory Complexes” model. In 2024, MTSCO officially established its own production facility—Siri Tubing—dedicated to the manufacturing of high-strength stainless steel and nickel alloy welded coiled tubing. Currently, MTSCO & Siri Tubing have become reliable suppliers to international energy giants such as OXY, KOC, and ADNOC. From material selection to specialized packaging (wooden/steel pallets), MTSCO consistently adheres to the core principle of “SAFE,” delivering safe, advanced, dedicated, and efficient transportation solutions for the global energy industry.
Material Properties
316 stainless steels are commonly used for transporting corrosive media and in instrumentation control systems. 316L has a low carbon content, resulting in a lower risk of intergranular corrosion after welding; 316Ti, stabilized with titanium, exhibits more stable microstructural behavior under certain high-temperature conditions. For welded coiled tubing, both materials are suitable for fluid control applications requiring dimensional accuracy, corrosion resistance, and continuous supply. MTSCO can match the appropriate material for you based on medium conditions, pressure requirements, and project standards, thereby reducing subsequent risks caused by material selection errors.
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Single Process Introduction
For welded coiled tubing, laser welding is a critical step. Stable control of heat input during welding helps achieve more uniform weld bead formation and reduces dimensional fluctuations during subsequent processing. For flowline control projects requiring delivery of long-length coiled tubing, welding consistency directly impacts pressure testing and on-site installation performance. Siri Tubing employs a 100% laser welding process, making it suitable for control line products with high requirements for weld stability, coil length, and batch consistency.
Eddy Current Testing (ET)
MTSCO’s technical team uses an automated eddy current testing system to perform 100% full-length scans on every coil of tubing. This equipment can detect minute cracks, gaps, and wall thickness anomalies on the surface or near-surface of continuous tubing in real time without making physical contact with the tubing. MTSCO insists on performing 100% full-length coverage eddy current testing on every coil of welded coiled tubing, spanning several kilometers in length, to ensure that automated equipment can accurately identify and locate any potential physical defects. This testing method mitigates potential risks for global engineering projects, thereby providing remote procurement clients with assured safety guarantees.
Quality Control System
• Raw Material Re-inspection: Raw materials are sourced from suppliers such as POSCO, TSINGSHAN, and JISCO. Each batch must be accompanied by an MTC and PMI. Upon arrival at the factory, materials undergo re-inspection to confirm that the material properties meet order specifications. MTSCO employs secondary verification to minimize the risk of material errors and mix-ups.
• Process Traceability: Every stage—from welding, cold drawing, and annealing to packaging—is supervised by the QC team, with records maintained through production process sheets and photographic documentation.
• Pre-shipment 100% Inspection: Prior to shipment, inspections are conducted for appearance, dimensions, quantity, PMI, airtightness, ET, and hydrostatic pressure tests. We also support third-party inspections by SGS, TÜV, and BV. MTSCO provides comprehensive quality assurance documentation for high-standard projects.
FAQ
Q1: What is the maximum length of a single roll of this multi-core control cable?
A1: Our welded coiled tubing is available in rolls up to 50,000 feet (approximately 15 kilometers) in length, meeting the demands of long-distance downhole cabling, reducing the number of field splices, and enhancing system reliability. MTSCO’s manufacturing facilities are equipped for the production of extra-long continuous lengths.
Q2: Do you accept third-party quality inspections?
A2: We fully support third-party inspections designated by our customers, such as SGS, TÜV, and BV.
Q3: What packaging options are available for coils? How do you prevent damage during shipping?
A3: We offer a variety of packaging options, including plastic reels, wooden reels, solid wooden reels, iron reels, iron and wooden reels, and wooden boxes. We reinforce the coils with wooden strips and ropes when loading them into crates to prevent impact during transport and ensure the goods arrive safely.
