ASTM B704 UNS N08825 Nickel Alloy Instrumentation Tubing 1/8 Inch OD

ASTM B704 UNS N08825 Nickel Alloy Instrumentation Tubing 1/8 Inch OD

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.

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.

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.

Triple-Checked for Guaranteed Quality

·Secondary Raw Material Verification: Upon arrival at the facility, raw materials undergo verification against their Material Test Certificates (MTC), heat numbers, and material specifications. This includes a secondary PMI and compliance check to minimize the risk of material mix-ups (e.g., between TP316 and TP316L).

· Production Process Monitoring: Key production stages, such as welding, cold working, and heat treatment, which are documented via process cards. Quality Control (QC) personnel monitor the production process and maintain photographic records, ensuring full traceability for every batch.

·Comprehensive Pre-shipment Inspection: Finished products undergo checks for appearance, dimensions, material composition (PMI), and quantity. Additionally, they are subjected to eddy current testing (ET) and pneumatic or hydraulic testing in accordance with specific product requirements. Relevant inspection results are filed centrally; arrangements can also be made for third-party inspections by organizations such as SGS, TÜV, or BV.

Material Characteristics of Alloy 825

Alloy 825 (UNS N08825) is a nickel-iron-chromium alloy containing elements such as molybdenum, copper, and titanium. It offers excellent resistance to acid corrosion and chloride-induced stress corrosion cracking. In environments involving sulfuric acid, phosphoric acid, and certain chloride-containing media, Alloy 825 demonstrates superior corrosion resistance compared to conventional austenitic stainless steels, making it well-suited for corrosive operating conditions in industries such as chemical processing and oil and gas.

For instrumentation tubing, corrosion resistance is directly linked to the service life and operational reliability of the piping system. Alloy 825 is ideal for use in pressure measurement, fluid sampling, and control lines exposed to corrosive media, as it helps mitigate the risks of wall corrosion, leakage, and the need for frequent component replacement.

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: Do you accept small-batch or customized orders?

A2: Absolutely. Through our exclusive partnership with our manufacturing facilities, MTSCO can rapidly address your custom requirements. Whether you need non-standard dimensions, specific chemical compositions, or particular mechanical properties, we can deliver efficient, tailored solutions for you.

Q3: Is the production process traceable?

A3: Yes. Our production process involves dedicated equipment and technical personnel. Quality Control (QC) oversees every stage, and we maintain comprehensive records, including process cards and photographic documentation to ensure full traceability.