2507 duplex steel Welded Capillary Tube 3/4 inch ISO certified

2507 duplex steel Welded Capillary Tube 3/4 inch ISO certified

Specification

Single Process Introduction

For 2507 welded capillary tubes, 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.

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, 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.

Siri Laboratory

·Weld Radiographic Test Laboratory (RT)

·Chemical Composition Analysis Laboratory

·Intergranular Corrosion Test Laboratory

·Tensile Test Laboratory

·Hardness Test Laboratory

·Metallographic Laboratory

Equipped with professional instruments such as tensile testers, impact testers, metallographic microscopes, and hardness testers, the Siri Laboratory performs mechanical property and non-destructive testing, including tensile, flaring, flattening, bending, hardness, and radiographic testing. All test reports and samples are archived as required to facilitate order traceability, quality verification, and project acceptance.

Material Properties

This 3/4-inch 2507 super duplex steel welded capillary tube is specifically designed for extreme industrial conditions. The S32750 grade perfectly combines the dual advantages of austenitic and ferritic steels, offering extremely high yield strength and the ability to reliably withstand high-temperature, high-pressure fluids in deep-sea and oil and gas wellbore environments. With a high chromium-molybdenum composition, it offers exceptional pitting resistance equivalent and demonstrates outstanding resistance to chloride corrosion and stress corrosion cracking. 2507 control line tubing is the ideal choice for high-salinity marine engineering, highly acidic petrochemical refining, and demanding chemical injection systems, ensuring the safety of complex media transport networks during long-term operation.

Factory Advantages

1. 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.

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. 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.

FAQ

Q1: What is the maximum operating pressure of the coils?

A1:Our welded coils undergo 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. The actual operating pressure must be calculated based on the specific material, wall thickness, and operating temperature. MTSCO provides professional technical support for selecting the appropriate specifications.

Q2: How is the quality of the coils inspected?

A2:We implement 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 coils 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.

Q3: In which corrosive environments are the coils suitable?

A3:Our duplex stainless steel (2205/2507) is suitable for harsh environments such as seawater desalination, chemical media, and chloride-containing environments. These materials offer excellent resistance to pitting corrosion and stress corrosion cracking. MTSCO can recommend the most cost-effective solution based on your specific application.