ASTM B444 Inconel 625 Tube

TSM Technology produces ASTM B444 Inconel 625 Tubes with a capacity of 200 tons/month in our 60,000㎡ modern plant, equipped with over 100 precision machines. Our seamless tubes, complying with UNS N06625, are designed for high corrosion and high temperature applications, with diameters ranging from OD 6–114 mm and WT 0.5–15 mm. Each tube undergoes thorough quality control such as ultrasonic testing, eddy current testing and hydrostatic testing and complies with ISO 9001, AS9100D and EN 10204 3.1 requirements. We provide dependable solutions for aerospace, chemical industrial and marine industries with delivery between 5 – 20 days and comprehensive traceability documentation.

What Are ASTM B444 Inconel 625 Tubes?

ASTM B444 Inconel 625 Tube is a nickel-based seamless tube made from Inconel 625 (UNS N06625) for high-corrosion and elevated-temperature service. It offers excellent resistance to pitting, crevice corrosion, chloride stress corrosion cracking, and oxidation, even in seawater and other aggressive environments.

ASTM B444 covers cold-worked seamless tubes, with Inconel 625 commonly supplied in Grade 1 (Annealed) and Grade 2 (Solution Annealed) conditions. It discusses important difficulties such chloride stress corrosion cracking, pitting in seawater, high temperature oxidation. It has a weld-seam less construction, which eliminates failure in high pressure sour gas and supercritical boiler applications. Its combination of corrosion resistance, high strength, and seamless construction makes it suitable for chemical processing, marine, aerospace, oil & gas, and power generation applications.

Specification of ASTM B444 Inconel 625 Tube

Alloy 625 Pipe Dimensions

Physical and Chemical Properties

Mechanical Properties

*Mechanical Properties According to ASTM B444

Standards for ASTM B444 Inconel 625 Tube

We manufacture tubes that meet international standards such as ASTM B444, ASTM B446, ASME SB-444, DIN 17458, JIS G3463. These cover seamless nickel alloy tubing for corrosive and high temperature operation.

TSM assures compliance by strictly adhering to dimensional tolerances, chemical composition restrictions, and mechanical property standards. All goods are delivered with Mill Test Reports (MTR) according to EN 10204 3.1 or 3.2. This ensures traceability from raw material to final product.

Permissible Variations for Outside Diameter and Wall Thickness of Seamless Pipe and Tube

What are the Features of ASTM B444 Inconel 625 Tube?

• Superior Corrosion Resistance: Resists pitting, crevice corrosion and stress corrosion cracking in chloride conditions including saltwater.
• High Temperature Stability: Mechanical strength and oxidation resistance to 1093 °C.
• Seamless Construction: Eliminates weld-seam weaknesses, crucial for high pressure and cyclic heat applications.
• Improved Creep Resistance: Grade 2 performs better under prolonged high temperature loading.
• Fatigue Resistance . Cyclic loading in aeronautical and marine settings .
• Wide Service Range: Reliable operation from cryogenic cold to high heat.

Application

ASTM B444 Inconel 625 Tube is used in demanding industries:

• Aerospace: High temperature oxidation resistance of turbine engine fuel lines, exhaust systems and ducting.
• Chemical Processing: Acid and chloride environments, heat exchangers, reactors, and pipework.
• Marine Engineering: Cooling systems from seawater, pipelines and desalination units for offshore platforms.
• Oil & Gas: Downhole tubing and wellhead equipment for sour gas service exposed to H 2 S and C O 2 .
• Power Generation Supercritical boiler tubes, steam generators, heat recovery units.
• Pollution Control Flue gas desulfurization systems and scrubber parts.

Production and Processing Technology

TSM Technology, with a 60,000㎡ state-of-the-art facility and over 100 precision equipment, offers full-process control from melting to final inspection. Our production process comprises:

Melting & Casting: High quality raw materials purchased from approved vendors are melted in vacuum induction melting (VIM) or electroslag remelting (ESR) to provide precise control of the chemical composition.

Hot extrusion: Seamless hollow tubes are produced by hot extrusion of billets.

Cold Working: Precision cold drawing and pilger rolling provide tight dimensional tolerances and a higher surface quality.

Heat Treatment: Anneal or solution anneal per ASTM B444 to provide the best mechanical characteristics and grain structure.

Quality Inspection: Dimensional in-line inspection, Ultrasonic Testing, Eddy Current Testing and Hydrostatic Pressure Testing for fault free delivery.

Our AS9100D accreditation ensures aerospace-grade accuracy and traceability throughout manufacture.

Quality Inspection

14+ years of global experience, served in 70+ countries. Proven knowledge in high performance metals.

• Certified Quality Systems: ISO 9001, AS9100D, AS9120, ISO 13485 and EN 9120 certifications for continual performance
• Fast Delivery: 5-20 days of turnaround with customizable customization.
• Advanced R&D: continuous innovation in processing & metallurgy of alloys.
• Full Traceability: Full set of records (QAC/ITP/MTR) on all orders.
• Service with Customer in Mind Technical guidance, quick response and solid after sale service.
• Integrated Supply Chain: Qualified sourcing of raw materials leads to better material consistency.

Eddy current testing (ET) Ultrasonic testing (UT)

Hydrostatic test

Why Choose TSM Technology?

14+ Years of Global Experience: Serving 70+ countries with proven expertise in high-performance alloys.

Certified Quality Systems: ISO 9001, AS9100D, AS9120, ISO 13485, and EN 9120 certifications ensure consistent excellence.

Rapid Delivery: 5–20 day turnaround with flexible customization options.

Advanced R&D: Continuous innovation in alloy processing and metallurgy.

Full Traceability: Comprehensive documentation (QAC/ITP/MTR) for every order.

Customer-Centric Service: Technical consultation, fast response, and reliable after-sales support.

Integrated Supply Chain: Qualified raw material sourcing ensures superior material consistency.

Our Certificate

EN 9120:2018 – Aerospace Distribution Quality Management System

AS9100D – Aerospace Quality Management for Manufacturing

ISO 13485:2016 – Medical Devices Quality Management

EN 9100:2018 – Aerospace Machining Certification

ISO 9001:2008 – Quality Management System

These certifications validate our commitment to precision, traceability, and reliability across aerospace, medical, and industrial sectors.

Company Exhibition

TSM Technology is exhibiting at industrial shows worldwide, showing our ASTM B444 Inconel 625 Tube and other alloy solutions. Our participation in aerospace and chemical processing and energy sector trade events further illustrates our dedication to industry leadership and customer interaction. We exchange technological advancements, analyze growing industry demands and build connections throughout the globe via various venues.

Customer Cases

Our product has been used successfully in critical applications across the world. Our seamless tubes are used by our clients in turbine fuel systems in aerospace, and sour gas service in offshore. Our tubes are used in corrosive situations in chemical processing facilities providing a longer service life and lower maintenance expenses. Our projects are the result of our commitment to quality, accuracy and client satisfaction.

Package and Shipping

Packaging: Tubes are fitted with plastic closures and packaged with steel strapping and put in plywood boxes or crates to safeguard them against damage during shipment.

Marking: Each bundle marked with heat number, specification, size, client PO reference.

Shipping: From our headquarters in Hong Kong, we organize worldwide logistics and deliver on schedule to over 70 countries. Full export documents (commercial invoice, packing list, certificate of origin, MTR) supplied.

Lead Time: 5-20 days with accelerated options available.

TSM Technology manufactures precision nickel and nickel alloy tubes in the following alloys:

FAQ

Q1: What's the difference between Grade 1 and Grade 2 product?

A:Grade 1 (Annealed) is intended for service up to 1100°F with allowance for tensile qualities. Grade 2 (Solution Annealed) has improved creep and rupture strength over 1100°F.

Q2: Can you do custom sizes?

A:Yes. We can tailor OD, wall thickness and length to your exact application needs.

Q3: What reports on testing are provided by you?

A:We provide Mill Test Reports (MTR) according to EN 10204 3.1 and 3.2 including chemical analysis, mechanical testing and NDT findings.

Q4: How many units can you manufacture?

A:Our monthly production capacity for product is around 200 tons.

Q5: Do you accept small quantity orders?

A:Yes. We can handle small-batch and large-volume orders, however minimum order quantities do apply. Contact Us See Details

Q6. How to assure the corrosion resistance?

A:The chemical compositions are strictly controlled according to UNS N06625 and annealing/solution annealing is performed to improve the microstructure and the passive film formation.

Q7. What is normal delivery time?

A:Standard Delivery: 5-20 days (depending on order quantity and customisation needs).

Contact Us

Ready to discuss your ASTM B444 Inconel 625 Tube requirements? Our technical experts are here to help you find the perfect solution.

Email: info@tsmnialloy.com