ASTM A249 TP304 Welded Capillary Tube Bright Annealed for Heat Exchanger

ASTM A249 TP304 Welded Capillary Tube Bright Annealed for Heat Exchanger

Specifications

About MTSCO and Siri Tubing

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. 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.

Factory Advantages

1. Ultra-Long Continuous Manufacturing:Siri Tubing provides continuous coiled tubing up to 15,000 meters without butt welds (OD: 3.18-38.1mm, WT: 0.4-2.54mm). This eliminates on-site welding risks and reduces costs for deep-sea umbilicals and downhole cabling.

2. Rigorous Quality Control & Traceability: Raw materials are 100% sourced from top mills like POSCO, Baosteel, and TSINGSHAN, undergoing secondary PMI and MTC verification. The entire production process is supervised and fully documented. We also support strict third-party inspections (SGS, TÜV, BV).

3. In-House Independent Laboratory: Our in-house facility performs comprehensive testing, including RT, chemical analysis, intergranular corrosion, tensile, hardness, and metallographic tests. All reports and physical samples are retained to ensure 100% lifecycle traceability.

4. Trusted by Global Energy Giants: As MTSCO’s manufacturing base, Siri Tubing is a stable supplier for top companies like OXY, KOC, and ADNOC. Driven by our S.I.R.I. philosophy (Safety, Ingenuity, Refinement, Innovation), our products have reliably served the oil & gas, geothermal, and shipbuilding sectors for over a decade.

Manufacturing Process Flow

The core manufacturing process for these welded capillary tubes typically includes strip welding, cold drawing, bright annealing, eddy current testing, and hydrostatic/air pressure testing, followed by precision coiling, marking, and final inspection as per project requirements. For small-diameter control line products, process stability directly impacts weld quality, dimensional consistency, and subsequent installation performance. MTSCO’s in-house facility, Siri Tubing, employs mature processes such as 100% laser welding, cold drawing, bright annealing, and plastic wrapping, making it suitable for the production of continuous-length control lines.

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 capillary tube, 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 Baosteel. 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 are the main materials used for MTSCO coiled tubing?

We offer a comprehensive range of stainless steel, duplex steel, and nickel alloy coiled tubing, including grades 304, 316, 2205, 2507, Alloy 625, and Alloy 825. All raw materials are sourced from internationally renowned steel mills, and each batch undergoes PMI material verification to ensure compliance with international standards such as ASTM and EN.

Q2: What is the maximum length per coil for this multi-core control cable?

A2: Our welded coils can reach a maximum length of 50,000 feet (approximately 15 kilometers) per coil, meeting the demands of long-distance downhole cabling, reducing on-site splices, and enhancing system reliability. MTSCO’s manufacturing facilities are equipped with the capability for ultra-long continuous production.

Q3: What is the maximum operating pressure of the coiled tubing?

A3:Our welded coiled tubing undergoes standard hydraulic testing at 5,000 PSI and can withstand a maximum test pressure of 15,000 PSI, meeting the requirements of the vast majority of high-pressure applications.