ASTM A269 304/304L Stainless Steel Welded Capillary Tube High Precision

ASTM A269 304/304L Stainless Steel Welded Capillary Tube High Precision

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.

Application Scenarios

Welded capillary tubes are primarily used in oil and gas wellhead control, chemical instrumentation piping, hydraulic control systems, and fluid transmission lines on offshore platforms. Installation space for these products is typically limited, yet they demand high pressure resistance, corrosion resistance, and continuous length. Consequently, they are frequently used in flowline control, chemical injection lines, and monitoring lines. MTSCO’s welded capillary tubes are suitable for a wide range of complex project scenarios and can be customized according to length and inspection requirements.

Single Process Introduction

For 304/304L 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.

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.

FAQ

Q1: What packaging options are available for coils? How do you prevent damage during shipping?

A1: 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.

Q2: What is the maximum continuous length available for this welded capillary tube?

A2: Our control line products are available in long-length coils, up to 15,000 meters or 50,000 feet. Continuous lengths help reduce on-site splicing and improve installation efficiency. MTSCO’s in-house manufacturing facilities can accommodate long-length delivery requirements.

Q3: What are the main materials used for MTSCO coils?

A3: We offer a comprehensive range of stainless steel, duplex steel, and nickel alloy coils, including grades 304, 316L, 2205, 2507, Alloy 625, and Alloy 825. All raw materials are sourced from internationally renowned steel mills, and each batch undergoes PMI testing to ensure compliance with international standards such as ASTM and EN.