Womic Stainless Steel Co., Ltd
Womic Stainless Steel Co., Ltd is a trusted manufacturer and exporter of Superalloy Steel Tubes, supplying seamless and welded tubes made from nickel-based, iron-nickel-based, and cobalt-based superalloys for the most demanding industrial applications.
Superalloy steel tubes are designed to perform exceptionally well in extreme environments involving high temperature, high pressure, and severe corrosion. They are widely used in aerospace, power generation, petrochemical, and marine industries, where traditional stainless steels cannot meet performance requirements.
Relying on years of technical expertise and continuous innovation in the special steel industry, Womic Stainless Steel has developed into one of China’s leading manufacturers of nickel alloy seamless pipes and tubes. Through long-term research and development efforts by our engineering and production teams, we provide reliable high-performance solutions for the world’s most demanding applications.
Seamless Hastelloy® alloy steel tubes and pipes
Seamless Inconel® alloy steel tubes and pipes
Seamless Monel® alloy steel tubes and pipes
Seamless Incoloy® alloy steel tubes and pipes
All Womic nickel alloy seamless pipes and tubes are manufactured in strict accordance with ASTM, ASME, EN, and other international standards, ensuring excellent quality, consistency, and performance.
Aerospace Industry
Nickel alloy seamless tubes are widely used in aircraft engines for hot-end components, including turbine blades, combustion chambers, and exhaust systems, where materials must withstand extremely high temperatures, pressures, and thermal cycling.
Energy & Power Generation
In nuclear and conventional power plants, nickel alloy pipes and tubes are used for steam generator heat exchanger tubes and critical piping systems due to their outstanding resistance to stress corrosion cracking (SCC), particularly in environments containing chloride ions and alkaline water.
Chemical Processing Industry
Nickel alloy seamless pipes are commonly applied in reactors, heat exchangers, and process pipelines, offering superior resistance to high-temperature oxidation, strong acids, and corrosive chemical media.
Metallurgical Industry
In steelmaking and metallurgical processes, nickel alloy pipes and tubes are utilized for high-temperature furnaces, smelting equipment, and casting systems, benefiting from their excellent high-temperature strength, oxidation resistance, and long service life.
Additional Industries
Oil & Gas
Marine & Offshore Engineering
Environmental Protection & Waste Treatment
Power Equipment & Industrial Furnaces
With advanced manufacturing facilities, strict quality control, and extensive export experience, Womic Stainless Steel continues to supply high-quality nickel alloy seamless pipes and tubes to customers worldwide, helping them achieve safer, more efficient, and longer-lasting operations.
Our production fully complies with international standards such as ASTM, ASME, EN, and ISO, ensuring consistent mechanical integrity, corrosion resistance, and thermal stability.
ASTM / ASME:
ASTM B163 / B167–Seamless Nickel and Nickel Alloy Condenser & Heat Exchanger Tubes
ASTM B407 / B423 / B444–Nickel-Chromium-Iron Alloy Seamless Tubes
ASTM B622 / B626–Seamless and Welded Nickel Alloy Tubes
ASTM A213–Seamless Ferritic and Austenitic Alloy-Steel Boiler and Superheater Tubes
EN / ISO: EN 10216-5, EN 10297-2, ISO 6207
Others: NACE MR0175 / ISO 15156 (Sour service), GOST 5632
Alloy Type UNS / Trade Name Equivalent Grade Description:
Nickel-Based Superalloys:N06625 (Inconel 625), N06600 (Inconel 600), N06690 (Inconel 690), N08825 (Incoloy 825), N08810 (Incoloy 800H), N08811 (Incoloy 800HT) ASTM B163 / B444 / B167
Excellent high-temperature strength and oxidation resistance
Nickel-Molybdenum Alloys:N10276 (Hastelloy C276), N06455 (Hastelloy B2), N06022 (Hastelloy C22) ASTM B622 / B626
Exceptional corrosion resistance in chemical and acid environments
Iron-Nickel-Based Alloys:N08120 (Alloy 20), N08028 (Alloy 28) ASTM B468 / B709
Resistant to sulfuric acid and chloride stress cracking
Cobalt-Based Superalloys:L605 / Haynes 25, MP35N
Custom Production Superior wear resistance and high-temperature performance
Precipitation-Hardened Alloys:Inconel 718, Inconel X-750 ASTM B637
High strength for aerospace and turbine components
Each tube is manufactured using advanced cold-drawing and precision welding techniques, followed by solution annealing and pickling to achieve superior mechanical and surface properties.
Specification Range
Outside Diameter (OD)：6 mm–114.3 mm (1/8"–4½")
Wall Thickness (WT): 0.5 mm–12.7 mm
Length: Up to 20 meters (straight) / Custom U-bent available
Type : Seamless / Welded / U-bent / Coiled
Surface Finish: Bright Annealed (BA), Pickled, Polished (180#–400#), Mirror Finish
Ends: Plain End / Beveled End / Threaded
Tolerances: As per ASTM B167 / B444 / EN ISO 1127
All tubes are tested with eddy current, hydrostatic, and ultrasonic inspection to ensure 100% integrity and reliability under extreme service conditions.
Superalloy Steel Tubes from Womic Stainless Steel are engineered for critical environments that demand outstanding heat resistance, oxidation resistance, and stress corrosion cracking resistance.
Typical applications include:
Aerospace & Aviation: Engine exhaust systems, turbine blades, fuel line heat exchangers
Power Generation: Superheater and reheater tubing, gas turbine exhaust heat recovery
Petrochemical Industry: Heat exchangers, high-temperature reformers, reactors, and cracking units
Marine & Offshore: Subsea process systems, seawater-cooled condensers
Nuclear Power Plants: Steam generator and pressure vessel tubing
Chemical Processing: Acid and alkali-resistant piping systems and evaporators
Oil & Gas Refining: Hydrogen reforming and high-pressure process lines
These tubes ensure maximum operational reliability in the harshest service conditions, offering long service life and reduced maintenance costs.
Womic Stainless Steel Co., Ltd is your reliable partner for premium Superalloy Tubes, combining advanced metallurgy, precise fabrication, and global supply capabilities.
Complete Superalloy Portfolio
We supply the full range of Nickel, Inconel, Incoloy, Hastelloy, and Alloy series tubes in both seamless and welded forms.
Certified Quality
Manufactured and tested according to ASTM, ASME, EN, and NACE standards with EN 10204 3.1 / 3.2 Mill Test Certificates.
Advanced Production Facilities
Equipped with TIG welding, cold drawing, annealing, pickling, and non-destructive testing lines for guaranteed precision.
Exceptional Corrosion & Heat Resistance
Designed for continuous operation up to 1100°C and resistant to oxidation, carburization, and chloride corrosion.
Custom Solutions Available
Special U-bent, finned, coiled, or corrugated tubes tailored to client drawings and project specifications.
Reliable Global Supply
Trusted by clients in Europe, Middle East, Southeast Asia, and South America, providing consistent quality and on-time delivery.
Looking for high-performance Superalloy Steel Tubes for your next project?
Get in touch with Womic Stainless Steel Co., Ltd today for technical support and a competitive quotation.
Tel: 0086-18390957568
Whatsapp: 0086-15575100681
E-mail:info@womicstainless.com
Website: www.womicstainless.com
