Finned Tube Supplier from China
- Over 15 years of finned tube manufacturing expertise
- Fully customizable options of extruded, welded, or embedded finned tubes
- Using high-quality raw materials compliant with international standards
- Every finned tube meets strict tests before shipping
- Fast delivery in as quick as 7 days
One Stop Solution to Custom Finned Tube
Vulroc is a professional finned tube manufacturer in China, offering a one-stop manufacturing service from core tube supply to finned tube processing, including base tube sourcing, fin type selection, engineering guidance, finning production, quality inspection, and export packaging. With dedicated finning machines, continuous tube stock, controlled daily output, and an in-house welding and inspection team, we ensure predictable production schedules, fast turnaround, and consistent finning quality across all batches.
With more than 15 years of experience in steel tube processing and finned tube fabrication, Vulroc has supplied thousands of tons of finned tubes to domestic and international clients. Annual production reaches 5,000 tons. Our products are widely used in boilers, heat exchangers, petrochemical plants, power generation, HVAC systems, waste heat recovery, and refineries, supporting both standard projects and customized engineering requirements.
Explore our Regular Finned Tube Styles
Vulroc provides a wide range of finned tube solutions, including Extruded Finned Tubes, L Type Finned Tubes, L、KL-Type Finned Tubes, and G Type Embedded Finned Tubes. Support both standard and fully customised. We work with a broad selection of base tube and fin materials such as carbon steel, stainless steel, alloy steel, copper alloys, and aluminium fins. We offer multiple processing and surface treatment options for finned tubes, including anti-corrosion coatings, galvanising, shot blasting, polishing, U-bending, tube end forming, and precision cutting.
Vulroc Finned Tube Features
We can produce according to customers’ requirements to ensure 100% customer satisfaction.
Full Customization
Customizable fin type, fin height, fin pitch, tube size, and material combinations for specific heat transfer requirements.
Multi Material Options
Carbon steel, stainless steel, alloy steel, copper alloys, and aluminum fins available for diverse industries.
Advanced Finning Processes
Extruded fin tube, Serrated fin tube, L Type fin tube, G Type fin tube, KL Type fin tube, H type fin tube, spiral fin tube, High-frequency welding with strong bonding and uniform fin spacing.
Strict Quality Testing
Chemical composition testing, UT and ET NDT, dimensional checks, and hydrostatic pressure tests on every batch.
Surface Treatment and Added Processing
Galvanizing, coatings, shot blasting, U bending, end forming, and precision cutting available upon request.
Fast Production and Delivery
Continuous tube inventory and dedicated finning lines enable delivery in as fast as 7–10 days.
Finned Tube Custimization Specification
At Vulroc, we customize finned tubes to match your exact operating conditions and material needs. From high-pressure use to marine corrosion environments and special alloy options, we deliver precise, performance-focused finned tube solutions.
Choose the Customized Finned Tube Tube Sizes
We produce your finned tube in the exact size you need within the following ranges:
| Parameter | Available Range |
| Outer Diameter (OD) | 12 mm – 114 mm |
| Wall Thickness | 1.0 – 6.0 mm |
| Tube Length | 1 m – 12 m |
| Fin Height | 6 mm – 16 mm |
| Fin Thickness | 0.2 – 0.5 mm |
| Fin Pitch（Fins per inch） | 4 – 20 FPI |
| Overall Diameter（including fin） | 25 mm – 150 mm |
| Fin Coverage Length | 300 mm – 11,500 mm |
| Bare Ends | 10 – 150 mm each side |
| Max Operating Temperature | 150°C – 450°C |
| Max Working Pressure | ≤ 12 Mpa |
Choose the Customized Finned Tube Shape
Vulroc offers a comprehensive range of customizable finned tube shapes to meet different heat transfer, structural support, and installation requirements. All finned tubes can be manufactured in accordance with ASTM, EN, JIS, or customer-specified standards.
Base Tube Shape Options:
- Round Base Tube
- Oval Base Tube
- Flat-Oval Base Tube
- Elliptical Base Tube
- Square or Rectangular Base Tube (for specialized equipment)
- U-Bend Tube Form
- Coil Tube Form
- Other engineered tube profiles according to customer drawings
Fin Shape & Configuration Options:
- Extruded Fin Profile
- Embedded (G-Type) Fin Shape
- L-Fin and LL-Fin Shapes
- Knurled and Serrated Fin Forms
- H-Type / Solid Plate Fins
- High-Frequency Welded Spiral Fin Profiles
- Custom fin height, pitch, and thickness based on operating conditions
Choose the Customized Finned Tube Material
Vulroc offers a wide selection of tube and fin material combinations. All materials can be manufactured according to ASTM, EN, JIS, GB, or project-specific standards.
Base Tube Material Options:
- Carbon Steel Tubes (SA179, SA192, ST35.8, ST45.8 for boiler and heat-exchanger service)
- Stainless Steel Tubes (304, 304L, 316, 316L, 321, 347 for high-temperature and corrosive environments)
- Copper Tubes (C11000, C12200 for refrigeration and low-pressure heat transfer)
- Copper-Nickel Tubes (90/10, 70/30 for marine and condenser applications)
- Titanium Tubes (Grade 1, Grade 2 for seawater and aggressive corrosion)
- Low-Alloy Steel Tubes (T11, T22 for high-temperature service)
- Other engineered alloys according to customer requirements
Fin Material Options:
- Aluminum Fins (1050, 1060, 3003 for high thermal conductivity)
- Copper Fins (C11000 for superior heat transfer)
- Carbon Steel Fins (for high-strength and high-temperature resistance)
- Stainless Steel Fins (304, 316 for corrosive or high-temperature working environments)
- Bimetallic Fin Options (Aluminum + Copper, Aluminum + Steel)
- Custom fin alloys based on engineered specifications
Choose the Customized Finned Tube Surface Finishing
- Epoxy Coating: Suitable for Carbon Steel, Low-Alloy Steel, Stainless Steel. Apply for Heat exchangers, boilers, petrochemical units, and HVAC coils
- Zinc-Rich Primer / Zinc Coating: Suitable for Carbon Steel, Carbon Steel Fins. Apply for Outdoor heat exchangers, coastal environments, anti-corrosion systems
- Hot-Dip Galvanizing: Suitable for Carbon Steel Tubes & Fins. Apply for Air coolers, harsh weather, marine exposure
- Electro-Galvanizing: Suitable for Carbon Steel. Apply for General anti-rust protection, light industrial use
- Sandblasting (SA1–SA2.5): Suitable for Carbon Steel, Stainless Steel. Apply for Pre-treatment before coating, rust & scale removal
- Anti-Rust Oil Coating: Suitable for All Carbon Steel Tubes. Apply for Export packaging, warehouse storage protection
- Blackening / Phosphating: Suitable for Carbon Steel Tubes & Fins. Apply for Boilers, industrial heat exchangers, oxidation protection
- Passivation: Suitable for Stainless Steel 304/316/321. Apply for Chemical plants, corrosive liquids, seawater systems
If you require additional surface treatment solutions, feel free to reach out to us for customized support.
Choose the Customized Finned Tube End Types
Vulroc supplies various end types designed for reliable welding, sealing, and mechanical connections across heat exchangers and industrial applications.
We offer multiple end type configurations for finned tubes, including:
- Bare End (Plain End) for welding, expansion, rolling, and general assembly
- Beveled End (BE) for secure welding and high-pressure pipeline connections
- Grooved End for mechanical locking, tube sheet insertion, and enhanced grip
- Expanded End / Reduced End for tube-to-tube jointing and coil assemblies
- Threaded End for mechanical fittings and detachable connections
- U-Bend End Form for heat exchanger bundles and return flow circuits
- Capped End for transport protection against dust, moisture, and impact
- Custom End Machining according to drawings or project-specific requirements
All end types can be precisely matched with the selected tube material, OD, wall thickness, and fin configuration to ensure reliable sealing, structural integrity, and long-term performance in demanding industrial environments.
| Parameter | Tolerance | Notes |
| Base Tube Outer Diameter (OD) | ± 0.25 mm (OD ≤ 38 mm) / ± 0.30 mm (OD 38–63 mm) / ± 0.50 mm (OD ≥ 63 mm) | Based on ASTM A179 / A192 / EN standards |
| Wall Thickness (WT) | ± 8–10% of nominal thickness | Standard tolerance for heat-exchanger tubing |
| Tube Length | ± 3 mm (≤ 6 m) / ± 5 mm (6–12 m) | Custom tighter tolerance available |
| Fin Height | ± 0.2 mm | For Aluminum / Copper fins |
| Fin Thickness | ± 0.02 mm | Extruded fins maintain tighter control |
| Fin Pitch (Fins per Inch) | ± 0.5 FPI | Depending on fin forming method |
| Overall Diameter (OD + Fin) | ± 1.0 mm | Important for tight bundle assemblies |
| Bare End Length | ± 2 mm | Bare areas for expansion/welding |
| Fin Coverage Length | ± 3 mm | Standard continuous finning control |
| Fin Bonding Strength | ≥ 75% bonding for extruded fins | As per ASTM SB359 |
| Roundness (Ovality) of Base Tube | ≤ 1% of OD | Required for U-tube bending & expansion |
| Straightness | ≤ 1.5 mm per 1 m (Max 6 mm total for long tubes) | After finning and straightening |
| U-Bend Radius Tolerance | ± 2 mm | Controlled after heat treatment |
| Bend Leg Length Difference | ≤ 1.5 mm | Important for heat-exchanger tube bundles |
| Weld Bead Height (for HF-weld fins) | ≤ 0.3 mm | Ensures smooth insertion into tube sheets |
| Surface Coating Thickness | ± 10–15% | For epoxy / zinc-rich coatings |
| Tube End Squareness | ≤ 1.0 mm | For beveled and plain ends |
| Threaded End Accuracy | As per G / NPT / BSPT standard, gauge pass | For mechanical connections |
| Type | Fin Bonding Method | Operating Temp. Range | Main Material Options | Key Advantages | Typical Applications |
|---|---|---|---|---|---|
| Extruded Finned Tube | Aluminum fins extruded onto tube | Up to 250°C | Aluminum + Copper / Stainless / Carbon Steel | Strong metallurgical bond, corrosion-resistant, excellent heat transfer | HVAC, Desalination, Air Coolers |
| L-Foot Finned Tube | L-shaped fins helically wound around tube | Up to 200–250°C | Aluminum or Copper + Carbon / Stainless Steel | Cost-effective, reliable for standard applications | Condensers, Oil Coolers, Air Coolers |
| G-Type Embedded Finned Tube | Fins embedded into pre-cut grooves | Up to 350–400°C | Aluminum / Copper + Alloy / CuNi / Stainless Steel | Strong mechanical bond, long service life under high temp | Petrochemical, Power, Marine Systems |
| HFW Welded Finned Tube | Fin strip welded to tube by high-frequency welding | Up to 450°C | Carbon Steel or Stainless Steel | Excellent bonding strength, high vibration & pressure resistance | Boilers, Heaters, Heat Recovery Systems |
All-in-one Solution to Custom Finned Tube
Low MOQ
Ideal for projects of all sizes, our flexible minimum order quantities let you start small without compromising specifications.
Fast Sampling
Get accurate pre-production samples quickly to verify dimensions, wall thickness, and performance before full-scale manufacturing.
Endless Specifications
Customize outer diameter, wall thickness, length, and surface finish to meet the exact requirements of construction, industrial, and engineering applications.
High Performance
We use premium carbon and alloy steel for exceptional strength, wear resistance, and long-term durability in demanding environments.
Providing stable and reliable core tubing solutions for heat exchanger systems
Vulroc tubes are engineered for heat exchanger applications where high thermal efficiency, corrosion resistance, and long-term operational stability are required. With consistent dimensional control, flexible material options, and proven manufacturing processes, Vulroc tubes meet performance demands across different heat transfer media and operating conditions.
These tubes are widely used in shell-and-tube heat exchangers, air coolers, condensers, and waste heat recovery systems, delivering reliable heat transfer performance and structural stability in demanding environments.
High-Performance Solutions for Energy & Power Projects
Vulroc’s finned tubes deliver high thermal efficiency and long-term durability required in energy and power applications. Manufactured from carbon steel, stainless steel, copper-nickel, and titanium, they support a wide range of diameters, fin types, and wall thicknesses tailored to high-temperature and high-pressure conditions.
Optional treatments such as epoxy coating, galvanizing, and passivation further enhance corrosion resistance in harsh operating environments. Ideal for boilers, condensers, HRSG units, waste heat recovery systems, and cooling circuits, Vulroc finned tubes provide dependable, high-performance solutions for both conventional and renewable energy projects.
Customized Tubes for OEM and Manufacturing
Vulroc’s finned tubes are engineered to meet the precise, customized requirements of OEMs and manufacturing companies needing efficient heat dissipation and durable thermal components. Available in carbon steel, stainless steel, copper-nickel, and aluminum-based designs, our tubes support custom diameters, wall thicknesses, fin types, and surface treatments to match complex equipment specifications.
With strong heat transfer performance and high structural stability, they integrate seamlessly into industrial machinery, automotive systems, compressors, refrigeration units, and custom-built cooling assemblies, offering reliable, long-lasting performance for diverse manufacturing applications.
Finned Tube Customization Flow
Vulroc provides fully customized solutions according to drawings or specifications.
Custom Finned Tube FAQs
Can you produce custom finned tubes?
Yes. Vulroc provides fully customized solutions according to drawings or specifications. You can define tube size, fin height, pitch, material combination, and surface coating to match your heat exchanger design.
How to Select the Right Finned Tube?
- Low to Medium Temperature (≤250°C): Choose Extruded or L-Foot types for high efficiency and cost performance.
- High Temperature or Vibration Conditions: Select G-Type or HFW Welded for stronger bonding and durability.
- Corrosive Environments (Seawater, Chemicals): Use Aluminum Extruded or CuNi Embedded tubes for long-term corrosion resistance.
- Industrial Heavy-Duty Operations: Opt for HFW Welded tubes made of alloy or stainless steel.
What is the typical lead time?
Standard production lead time is 4–6 weeks, depending on material availability and quantity. For urgent or project-based orders, we offer fast-track production and flexible shipping options.
Do you provide quality certifications?
Yes, our finned tubes comply with ISO 9001, and inspection reports such as hydrostatic test, eddy current test, and dimension check are provided with every batch. Third-party inspection (SGS, BV, TUV, etc.) can be arranged upon request.
How are the finned tubes packed for export?
All tubes are packed in seaworthy wooden cases or steel frames, with plastic film protection, labels, and full traceability for safe global delivery.
What are you main market areas and countries ?
We have extended our sales net to almost all over the world, such as Southeast Asia, Australia, America, Canada, Europe, the Middle East, Africa, and many other countries and areas.
How can I request a quotation?
Simply send us your specifications, tube size, fin type, quantity, and working condition to info@vulroc.com. Our team will reply within 24 hours with a detailed quotation and technical recommendation.
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