ASTM A789 S32205 Duplex Welded Instrumentation Tubing Chloride Resistant

ASTM A789 S32205 Duplex Welded Instrumentation Tubing Chloride Resistant

Why Does Instrumentation Tubing Matter?

Instrumentation tubing consists of small-diameter, precision-engineered pipes used to connect pressure instruments, control valves, and industrial equipment. These tubes primarily serve functions such as pressure transmission, the transport of hydraulic media, and fluid sampling for instrumentation. Because such piping often requires on-site bending and connection via compression fittings, the material must meet stringent requirements regarding outer diameter tolerance, wall thickness uniformity, surface quality, and sealing reliability.

Why Choose 2507 Instrumentation Tubing?

2507 (UNS S32750) is a super duplex stainless steel with high chromium, molybdenum, and nitrogen content. It combines the advantages of both austenitic and ferritic microstructures, offering high strength and exceptional corrosion resistance. Compared to 316L and 2205, 2507 provides superior resistance to pitting corrosion, making it particularly well-suited for environments with high chloride ion concentrations, seawater, or other highly corrosive conditions. Utilizing 2507 for instrumentation tubing effectively reduces the risk of pitting, crevice corrosion, and chloride-induced stress corrosion cracking.

In marine engineering, offshore oil and gas platforms, and chemical processing facilities, 2507 instrumentation tubing is used for applications such as pressure measurement, hydraulic control, and the transport of corrosive media. Its high yield strength enhances the pressure-bearing capacity of the piping system and offers greater flexibility in wall-thickness design, while its excellent corrosion resistance helps minimize leaks, equipment downtime, and long-term maintenance costs.

Specifications Of 2507 Instrumentation Tubing

About Siri Tubing

Siri Tubing is a specialized manufacturing facility for tubing and control lines under the MTSCO brand. Spanning approximately 7,000 square meters with a production capacity of 150 tons per month, our products serve sectors including oil and gas, geothermal energy, offshore operations, and underground applications. The facility is ISO-certified, and through robust manufacturing and testing capabilities, we ensure consistent product specifications and rigorous quality control for our clients.

Siri Tubing maintains comprehensive quality oversight from production and in-house testing to laboratory analysis, supporting a wide range of evaluations, including PMI (Positive Material Identification), ET (Eddy Current Testing), pneumatic/hydraulic pressure testing, mechanical property testing, hardness testing, and metallographic analysis. Our production process is fully traceable via process cards and QC records, simplifying project acceptance and quality audits. Backed by MTSCO’s global sales and project service network, Siri Tubing provides highly efficient delivery support for EPC (Engineering, Procurement, and Construction) projects and end-user applications.

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.

Full-Process Quality Traceability System

For every order, we generate a dedicated "Process Card" that links the Purchase Order (PI) number to the specific production batch. We maintain a centralized archive of raw material heat numbers, original manufacturer MTCs, and secondary PMI spectral records. Furthermore, we track and document all key processes, including heat treatment and non-destructive testing (NDT). Clients may access the complete production and inspection data archive at any time or appoint a third-party inspection (TPI) agency. Through a transparent, closed-loop data system, Siri Tubing ensures that all instrumentation tubing is fully traceable and compliant from the source to final delivery.

FAQ

Q1: How is instrumentation tubing packaged and transported?

A1: MTSCO uses plywood crates for packaging. Each tube is individually sleeved in a plastic bag, and protective end caps are fitted to both ends. This minimizes the risk of scratches, contamination, or damage to the tube ends during transit, ensuring the product arrives in good condition for customer inspection.

Q2: What are the primary materials used for MTSCO coiled tubing?

A2: 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.

Q3: Do you accept third-party quality inspections?

A3: Yes, we fully support inspections by third-party agencies designated by the client, such as SGS, TÜV, or BV.