ASTM B167 Alloy 600 / UNS N06600 Nickel Alloy Tube For High Temperature

ASTM B167 Alloy 600 UNS N06600 Nickel Alloy Welded Tube For High Temperature

Specifications Of Alloy 600 Welded Tube

MTSCO——Your Trusted Partner in Industrial Piping

MTSCO specializes in the supply of stainless steel and nickel alloy piping systems. In partnership with our holding factory, HUXIN Pipe—which boasts 35 years of manufacturing experience—we provide global industrial projects with reliable manufacturing capabilities, quality control, and comprehensive documentation support.

To meet the rigorous requirements for material qualifications, quality traceability, and compliance documentation in overseas engineering projects, we offer support for international certifications such as ISO, PED, AD2000, and NORSOK M650, helping clients streamline project approval and qualification processes.

Simultaneously, MTSCO is advancing its green manufacturing capabilities; a new factory powered by clean photovoltaic energy is scheduled to commence production in the fourth quarter of 2026, offering long-term support to help clients meet low-carbon, ESG, and sustainable supply chain requirements.

Product Advantages

International Certification Support to Facilitate Project Qualification
To address the strict material qualification and documentation compliance requirements of the oil & gas, offshore, and high-demand industrial sectors, MTSCO provides support for international certifications such as PED, AD2000, and NORSOK M650. We also supply complete material documentation and quality traceability records, enabling clients to efficiently navigate overseas project qualification and material approval processes.

Digital Heat Treatment for Enhanced Weld Stability
Following fully automated welding, the tubes undergo continuous bright solution annealing. The digital temperature control system enables precise regulation of the heat treatment process, facilitating a uniform and stable microstructure. This enhances consistency across the weld seam and base metal, thereby reducing the risk of failure in high-temperature and corrosive environments.

100% Inspection and Verification to Minimize Leakage Risk
Every tube undergoes in-line eddy current testing and hydrostatic testing prior to shipment to detect weld defects, porosity, lack of fusion, and potential leakage risks. This rigorous inspection process ensures the product meets stringent requirements for safety, sealing integrity, and consistent quality in pressure systems.

Continuous Bright Solution Annealing
Continuous bright solution annealing is a critical process in the manufacture of small-diameter welded nickel alloy tubes. Following automated welding, the tubes pass through a continuous bright annealing furnace under a protective atmosphere. They undergo solution treatment tailored to specific material and dimensional requirements, followed by rapid cooling to achieve a stable microstructure.
This process helps relieve residual welding stresses and improves the microstructure of the weld seam and heat-affected zone (HAZ), enhancing microstructural uniformity, corrosion resistance, and long-term service stability. Through precise heat treatment control, MTSCO ensures reliable performance for nickel alloy welded tubes in high-temperature, corrosive, and high-pressure applications.

Material Properties

Alloy 600 (UNS N06600) is a nickel-chromium alloy with a minimum nickel content of 72%. It offers excellent corrosion resistance and strong resistance to chloride-induced stress corrosion cracking. The addition of chromium further enhances the material's oxidation resistance, ensuring stable performance in high-temperature environments up to approximately 1093°C.

The Alloy 600 welded nickel alloy tubes supplied by MTSCO are suitable for demanding applications—such as industrial heat treatment furnaces, nuclear engineering, chemical processing equipment, and heating components—that require high-temperature stability, oxidation resistance, and corrosion resistance. These tubes help clients enhance equipment operational stability and reduce maintenance risks in harsh environments.

Product Standard Overview

ASTM B516 is the standard governing welded tubes made from nickel-chromium-iron alloys such as UNS N06600, UNS N06603, and UNS N06025; it primarily covers products intended for use as boiler, heat exchanger, and condenser tubes. The standard specifies requirements for chemical composition, mechanical properties, dimensional tolerances, weld quality, heat treatment conditions, and inspection protocols. These measures ensure stable material performance and provide traceable quality documentation for tubes operating under high-temperature, corrosive, and pressure-intensive conditions.

MTSCO supplies Alloy 600 nickel alloy welded tubes in accordance with ASTM B516 and specific customer requirements. We provide comprehensive documentation—including material quality certificates, dimensional inspection reports, non-destructive testing (NDT) results, hydrostatic test records, and quality traceability files—to streamline material verification, installation, and project delivery for our customers.

FAQ

Q1: How are these precision welded tubes packaged, and what are the packaging standards?
A1: We strictly adhere to a standard protective packaging protocol: the ends of the welded tubes are fitted with protective caps, and each individual tube is wrapped in a plastic bag. Finally, the entire shipment is securely fastened and packed into sturdy plywood crates to ensure that the tubes remain in pristine condition throughout long-distance international transit and delivery.

Q2: During long-cycle production periods spanning several months, how can the purchaser monitor the real-time progress of their order?
A2: We provide a transparent order milestone tracking service. A dedicated project coordinator will regularly send progress reports to the client including on-site photos of raw material receipt, welding, heat treatment, and non-destructive testing, ensuring that the cross-border procurement process remains 100% under the client's control regarding delivery schedules.

Q3: Do you offer tube prefabrication services to simplify on-site construction?
A3: Yes. In addition to basic precision cutting-to-length, we can perform precise tube-end beveling, internal and external surface treatments, and other processes based on engineering drawings, thereby reducing the complexity of your on-site construction work.