Alloy 625 UNS N06625 Instrumentation Tubing for Offshore

Alloy 625 UNS N06625 Instrumentation Tubing for Offshore

Why Choose Nickel Alloy 625 Instrumentation Tubing?

Instrumentation tubing is widely used in pressure measurement, hydraulic control, and fluid sampling systems, serving as a critical conduit for connecting industrial instruments, valves, and control equipment. Compared to standard fluid-conveyance piping, instrumentation tubing typically features a smaller diameter and demands higher standards for dimensional precision, wall-thickness uniformity, and surface quality to ensure reliable precision connections, suitability for bending, and the ability to withstand system pressure.

In offshore engineering, instrumentation tubing must also endure exposure to salt spray, seawater, and other corrosive media. Alloy 625 (UNS N06625) offers exceptional resistance to chloride-induced corrosion, making it an ideal choice for offshore platforms and highly corrosive operating environments. MTSCO supplies welded Alloy 625 instrumentation tubing, ensuring quality through rigorous dimensional checks, Positive Material Identification (PMI), eddy current testing, and pressure testing to meet the technical and acceptance criteria of diverse projects.

Factory Advantages

1. 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.

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. 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.

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.

Specification

About Siri Tubing

Siri Tubing, a specialized coiled tubing manufacturing facility under the MTSCO brand, operates a 7,000-square-meter production plant with a monthly capacity of 150 tons. Its core product offerings include instrumentation tubing, coiled tubing, and encapsulated tubing. The facility houses an independent laboratory equipped for material analysis, mechanical property testing, and metallographic examination. Comprehensive quality checks and documentation are maintained at every stage, from the re-inspection of raw materials and in-process monitoring to final product testing, ensuring full traceability. Looking for a reliable supplier of Alloy 625 instrumentation tubing? Please send your specifications and project requirements to MTSCO to receive a quote.

From Steel Coil to Instrumentation Tube:

Our welded tubing is produced using steel coils, which are slit and formed before undergoing automated welding and in-line annealing—a process that ensures continuous, high-efficiency production. Subsequent stages include end-facing, pickling, non-destructive testing (NDT), marking, and final product inspection. Our instrumentation tubing undergoes 100% full-coverage inspection via in-line eddy current testing, with complete process traceability to ensure that every tube meets international standards.

What Tests Have Our Products Undergone?

Siri Tubing conducts rigorous testing on finished products and maintains detailed inspection records. Every batch is backed by clear quality documentation prior to delivery.

·Visual Inspection: Examines the surface and ends of the tubes to identify issues such as scratches, dents, oxidation, or other surface defects.

·Dimensional Inspection: Measures critical dimensions, including outer diameter, wall thickness, and length, against specified tolerances to prevent deviations that could affect subsequent connection and installation.

·Positive Material Identification (PMI): Verifies the material grade via spectral analysis, cross-referencing it with the Material Test Certificate (MTC) and heat number.

·Eddy Current Testing: Performs continuous inspection of the tube to detect surface and near-surface anomalies, while also verifying the integrity of the weld seam and the continuity of the tube body.

·Air / Hydraulic Pressure Testing: Assesses the structural integrity of the tube and checks for leaks. We are equipped to perform 100% air or hydraulic pressure testing at pressures ≥35 MPa.

FAQ

Q1: Do you have relevant industry project experience?

A1: Our coiled tubing has long served international energy companies such as OXY, KOC, and ADNOC, and has been applied in numerous FPSO, downhole oilfield projects, and geothermal power plants, with proven track records in high-pressure and highly corrosive environments.

Q2: What is the purpose of bright annealing for instrumentation tubing?

A2: Bright annealing involves heat treatment in a protective atmosphere, resulting in a clean, bright surface finish on the tubing while restoring the material’s properties following cold working. This process is ideal for tubing used in instrumentation and fluid control systems.

Q3: What are the primary materials used for MTSCO coiled tubing?

A3: We offer a comprehensive range of coiled tubing in stainless steel, duplex steel, and nickel alloys, including grades such as 304, 316L, 2205, 2507, Alloy 625, and Alloy 825. All raw materials are sourced from reputable steel mills.