Nickel Alloy Steel Tube | TORICH - Professional Manufacturer
TORICH, as a professional steel pipe manufacturer, provides nickel alloy steel tube in various materials such as Inconel, Incoloy, Hastelloy, and Monel. Our product range includes seamless pipes, welded pipes, and shaped pipes. We manufacture strictly in accordance with national standards such as ASTM, JIS, DIN, EN,GOST, etc. providing one-stop solutions for the oil and gas, power generation, marine engineering, and aerospace industries.
Why choose us
Quality control
TORICH implements a strict quality management system throughout the entire production process, ensuring that the pipes meet international standards such as ASTM, JIS, DIN, and EN.
Production capacity
TORICH boasts modern production lines with an annual capacity of 24,000 metric tons, enabling stable supply and timely delivery for large-scale projects and long-term contracts.
Customized service
TORICH offers flexible customization services, including custom sizes, materials, and special shapes. In addition, value-added processing services such as cutting, bending, and surface treatment are also available.
Packaging
TORICH uses packaging methods such as plastic end caps, plastic film, woven bags, wooden crates, and iron frames to prevent damage or contamination of the pipes during transportation.
Material Advantages
- Inconel Alloy Tubes: Inconel alloy is a nickel-based superalloy with excellent corrosion resistance and high-temperature strength. It is primarily composed of nickel, chromium, and iron, and usually contains other alloying elements. Inconel alloy tubes are widely used in the petroleum, chemical, and aerospace industries for manufacturing pipelines and heat exchangers operating under high temperature and pressure.
- Hastelloy Alloy Tubes: Hastelloy alloy is a nickel-based corrosion-resistant alloy with excellent corrosion and oxidation resistance. It is primarily composed of nickel, molybdenum, and chromium, and is suitable for various strong acids, weak oxidizing acids, salt solutions, and seawater environments. Hastelloy alloy tubes are widely used in the chemical, petroleum, and pharmaceutical industries for manufacturing pipelines and equipment operating in corrosive media.
- Monel Alloy Tubes: Monel alloy is a nickel-copper alloy with good corrosion resistance and high-temperature resistance. It is primarily composed of nickel and copper, and usually contains small amounts of iron, manganese, and silicon. Monel alloy tubes are commonly used in seawater treatment equipment, shipbuilding, chemical equipment, and for manufacturing high-temperature and high-pressure pipelines and heat exchangers.
- Incoloy Alloy Tubes: Incoloy alloy is a type of nickel-chromium-iron-based alloy with excellent corrosion resistance and high-temperature resistance. It is composed of nickel, chromium, iron, and small amounts of molybdenum, copper, and other elements. Incoloy alloy pipe is widely used in industries such as petroleum refining, chemical processing, and heat treatment equipment for manufacturing pipelines, furnaces, heat exchange equipment, etc., under high temperature and high pressure conditions.
Chemical Composition
| Elements | Nickel | Chromium | Iron | Molybdenum | Copper | Manganese | Silicon | Carbon | Sulfur | Phosphorus |
|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 600 | 72-76% | 14-17% | Balance | - | - | 1% | 0.5% | 0.15% | 0.015% | 0.015% |
| Incoloy 825 | 38-46% | 19-23% | Balance | 2.5-3.5% | 1-3% | - | - | 0.05% | 0.02% | - |
| Monel 400 | 63% | 2.5-3.5% | 28-34% | - | 29-34% | 2% | - | 0.03% | 0.024% | - |
| Hastelloy C-276 | 57-72% | 14-16% | Balance | 15-17% | - | - | - | 0.02% | 0.01% | - |
Mechanical Properties
| Steel Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | Modulus of Elasticity (GPa) |
|---|---|---|---|---|---|
| Inconel 600 | 550-750 | 240-290 | 30-40 | 160-200 | 207 |
| Incoloy 825 | 550-800 | 300-550 | 30-40 | 160-220 | 207 |
| Monel 400 | 620-880 | 260-400 | 30-40 | 150-190 | 180 |
| Hastelloy C-276 | 620-830 | 290-480 | 40-60 | 170-200 | 207 |
application areas
Oil and Gas
Heat exchangers and condensers, downhole tubing and control lines, refinery process piping, etc.
Chemical Processing
Used in chemical reactors, heat exchangers, acid treatment, and transfer lines, etc.
Power Generation
Boiler tubes, superheaters and reheaters, nuclear power plant piping, etc.
Aerospace
Fuel and hydraulic lines, exhaust systems, turbine cooling tubes, etc.
Marine and Offshore Engineering
Seawater piping systems, desalination plants, heat exchangers and condensers, etc.
Medical Field
Medical implants, endoscopic instruments, catheter reinforcement tubes, precision medical equipment frames, etc.
Customized Services
Size Customization
We offer customized services for seamless and welded tubes, including outer diameter, wall thickness, length, and shape.
Material Customization
We can provide materials from the Inconel, Incoloy, Hastelloy, and Monel series according to customer requirements.
Surface Finish
We offer various surface treatment options, including pickling and passivation, bright annealing, and polishing.
Custom processing
We provide precision cutting, U-bending, and special bending services, as well as precision forming of non-standard profiles.
Manufacturing Process
I. Tube Billet Manufacturing Process
1. Raw Material Preparation and Primary Smelting
- Utilizing either base materials or composite materials, the feedstock undergoes electric arc smelting to produce molten nickel alloy.
- If the composite material route is chosen, the molten alloy requires further purification via Vacuum Oxygen Decarburization (VOD) refining following the initial smelting.
2. Tube Billet Forming
The refined molten nickel alloy is processed through a centrifugal casting technique to produce the initial tubular billet.
3. Tube Billet Post-processing and Inspection
- The centrifugally cast billets undergo cold drawing to adjust dimensional precision and roundness.
- Surface machining is performed to remove scale and defects, thereby enhancing surface finish.
- A comprehensive inspection of the billets is conducted to verify both internal and surface quality.
- Conforming billets are moved to storage, awaiting subsequent processing into finished steel pipes.
II. Nickel Alloy Steel Pipe Manufacturing Process
1. Billet Heating
The centrifugally cast billets are first heated in a rotary furnace, followed by heating in an induction furnace, allowing for precise temperature control within the optimal hot-working range.
2. Hot Extrusion Forming
The heated billets undergo an extrusion process to be preliminarily formed into seamless steel pipes.
3. Cold Working and Heat Treatment (Two Parallel Process Paths)
Path A:
- Heat Treatment: To relieve internal stresses and optimize the metallurgical microstructure.
- Straightening: To correct the linearity of the pipe.
- Sandblasting: To remove surface scale and clean the surface.
- Cold Rolling: To precisely control wall thickness and outer diameter, thereby enhancing dimensional accuracy and mechanical properties.
- Sawing: To cut the pipes to the specific lengths required by customer orders.
- Inspection: To verify dimensions, as well as surface and internal quality.
- Flaw Detection: To screen for internal defects using non-destructive testing methods (e.g., ultrasonic or eddy current testing).
- Finishing: To perform final treatments such as chamfering and polishing.
- Finished pipes are moved to storage.
Path B:
- Heat Treatment (Heat Treatment
- Straightening
- Finishing
- Inspection
- Flaw Detection
- Finishing
- Finished Product Warehousing
testing equipment
FAQ
Q: What grades of nickel alloy steel tubes do you supply?
A: We offer Incoloy 800/800H/800HT, Incoloy 825, Inconel 600, 625, 718, Hastelloy C276, Monel 400, and other equivalent grades.
Q: What are the main advantages of nickel alloy steel tubes compared to stainless steel tubes?
A: Nickel alloy steel tubes offer excellent high-temperature strength, superior oxidation resistance, carburization resistance, and resistance to chloride stress corrosion cracking, and perform exceptionally well in acidic and high-pressure environments. Compared to traditional stainless steel, nickel alloys have a longer service life in extreme conditions such as those found in chemical, oil and gas, and power generation industries.
Q: What manufacturing processes does your company use to produce nickel alloy steel tubes?
A: Depending on the size requirements, our nickel alloy steel tubes are produced using hot extrusion, cold drawing, and precision cold rolling processes. Each tube undergoes solution annealing, pickling, and passivation treatment to ensure optimal microstructure, surface quality, and corrosion resistance.
Q: What quality inspections are performed before delivery?
A: Each batch of nickel alloy steel tubes undergoes comprehensive inspection, including: chemical composition analysis, mechanical property testing, eddy current and ultrasonic testing, hydrostatic testing, and dimensional and surface inspection.
Q: Can you provide custom sizes and special processing?
A: Yes. We support custom non-standard outer diameters, wall thicknesses, and lengths, as well as U-bending, polishing, precision cutting, CNC machining, and special surface treatments. We can provide customized solutions for heat exchangers, condensers, and critical industrial applications.
Q: How do you guarantee a stable supply and timely delivery?
A: We have advanced production equipment, a stable supply of raw materials, and a strict production plan. With an annual production capacity of 24,000 tons, we can meet the needs of small batch trial orders and undertake large-scale projects, while ensuring stable product quality and timely delivery.
Q: Do you provide international packaging and export support?
A: Yes. The tubes are packaged in seaworthy wooden crates, steel frames, or custom packaging to prevent damage during transportation. We also provide export documentation, third-party inspection, and logistics coordination services for our global customers.
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