TP304 304L Stainless Steel Geothermal Coiled Tubing Cold Drawn

TP304 304L Stainless Steel Geothermal Coiled Tubing Cold Drawn

Company and Factory Introduction

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, geothermal coiled 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.

Specifications

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. Extreme Pressure Resistance: All tubes undergo 100% high-pressure testing before shipment. With a standard test pressure of 40 MPa and a maximum of 100 MPa (far exceeding the 7 MPa standard for seamless pipes), we guarantee absolute safety for extreme high-pressure environments.

3. 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).

4. 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.

5. Ready Stock & Customization Services: To meet tight EPC project schedules, we maintain year-round stock of standard grades (304, 316, 2205, 2507, Alloy 625, Alloy 825). We also offer customized polymer encapsulation and highly secure packaging solutions, such as iron reels and solid wood spools.

6. 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.

Application Scenarios

Geothermal coiled tubing are primarily used in geothermal well development, geothermal energy extraction, downhole fluid transport, chemical injection, pressure monitoring, and temperature monitoring. Since geothermal environments typically involve high temperatures, high pressures, corrosive media, and continuous deep-well operations, there are stringent requirements for the pipes’ corrosion resistance, pressure-bearing capacity, weld stability, and continuous length. MTSCO geothermal coiled tubing is available in various materials and lengths to meet project requirements, making it suitable for geothermal power generation, district heating, downhole control systems, and complex energy development projects.

Single Process Introduction

For geothermal 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.

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 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 operating pressure of the coiled tubing?

A2: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.

Q3: How is the quality of the coils inspected?

A3: We conduct a three-tier quality inspection process: raw material PMI testing, full traceability throughout the production process, and 100% high-pressure testing plus eddy current testing prior to shipment. All welded coiled tubing must pass rigorous leak testing, and complete inspection records and photographs are retained. MTSCO supports on-site inspections by third-party authoritative agencies to ensure zero-defect delivery for every batch of products.