Custom Steel Cone Fabrication for Industrial Applications
Arntzen Corporation manufactures custom rolled and welded steel cones engineered for demanding industrial applications across sectors such as commercial equipment, energy, infrastructure, mining, and heavy equipment manufacturing. Each cone is fabricated to specific dimensional tolerances, ensuring proper fit within our customers’ larger assemblies.
From single prototype components to high-volume production runs, our team supports fabricators, OEMs, and EPC contractors with scalable manufacturing solutions designed to meet project timelines and performance requirements.
Engineering Support & Design Optimization
Successful cone fabrication begins long before rolling. Arntzen has engineering & drafting staff to support the order process & progression, while ensuring manufacturability and cost efficiency.
Our internal order support includes:
- Part flat development from customer drawings, sketches, or specifications
- DXF pattern development and flat layout optimization
- Material yield optimization to reduce scrap and cost
- Tolerance review to ensure proper fit-up during installation
- Weld seam placement and forming feasibility
This collaborative approach helps reduce rework, accelerate production timelines, and ensure the final product meets both design intent and real-world application demands.
Welding, Assembly & Finishing Capabilities
Beyond rolling and forming, Arntzen provides full-service fabrication to deliver ready-to-install cone components.
Our capabilities include:
- Full penetration awelding
- Custom end preparations; bevel preparations
- Assembly of cone sections into complete units or assemblies
- Flange attachment, reinforcement rings
- Surface preparation including blasting, coating, or priming upon request
- Dimensional inspection and quality verification prior to shipment
By consolidating fabrication processes under one roof, we help customers streamline their supply chain and reduce lead times.
Precision, Tolerances & Quality Control
Maintaining tight tolerances is critical in cone fabrication, particularly for applications involving fluid flow, pressure systems, or structural alignment.
Arntzen implements strict quality control procedures throughout the manufacturing process, including:
- Dimensional verification of rolled geometry and diameters
- Weld inspection and integrity checks
- Fit-up validation for multi-section cones
- Material traceability and documentation when required
Our focus on precision ensures consistent performance and minimizes installation challenges in the field.
Industries & Use Cases
Steel cones are used across a wide range of industrial systems where transitions, flow control, or structural geometry changes are required.
Common applications include:
- Process piping systems and ductwork transitions
- Hoppers, chutes, and material handling equipment
- Pressure vessels and tank components
- Power generation and energy infrastructure
- Water treatment and industrial processing systems
This versatility makes custom cone fabrication a critical component in many engineered systems.
Fast Turnaround & Scalable Production
With 24-hour production and multiple plate rolls available, Arntzen is equipped to handle both urgent and long-term fabrication needs.
We support:
- Rush orders and expedited production schedules
- Large diameter and heavy plate cone fabrication
- Batch production for OEM manufacturing programs
- Complex, multi-piece cone assemblies
Our production capacity ensures reliability, whether you need a single custom component or repeat manufacturing at scale.
Request a Quote for Steel Cone Rolling
If you’re sourcing custom rolled and welded steel cones, Arntzen provides the experience, equipment, and engineering support to deliver high-quality results.
Submit your drawings, specifications, or project requirements, and our team will provide a detailed quote along with guidance on material selection, manufacturability, and lead time.
If It's Round Call Arntzen

MATERIAL
Huge Steel Plate Inventory 20,000,000 pounds of steel

EQUIPMENT
20 plate rolls, up to 20 ft wide

SERVICE
24 Hour A Day Production Arntzen Runs 3 Shifts
Steel Cone Rolling Capabilities
- Concentric Reducers
- Eccentric Reducers
- Offset Reducers
- Segmented Reducers
- Light Wall from Sheet
- Heavy Wall from Plate
- Transitions
- Carbon Steel
- Stainless Steel
- Nickel Alloy
- Aluminum
- Titanium Alloy
- High Manganese
- High Strength
- Structural Grade
- Pressure Vessel Quality
- Corrosion Resistant
- Impact Resistant
- Wear Resistant
- Heat Resistant
- Roundness
- Consistency
- Mill Test Reports
- Heat, Slab & Grade Marking
- Traceability
- Curvature Maintained throughout joint
- Huge Plate Inventory for Quick Shipping
- Cutting, Rolling, Bending & Welding to Your Specifications
- 20 f. Wide Plate Rolls
- 1 Piece or Truckloads
- 24 Hour/Day Production
Rolled & Welded Steel Cones & Transitions
If It's Round... Call Arntzen
Frequently Asked Questions
To generate an accurate quote, it’s best to provide drawings or specifications that include top diameter, bottom diameter, height, material type, thickness, and quantity. If drawings are not available, our team can work from sketches or basic dimensions and help develop the required layout for production.
Arntzen can manufacture large diameter cones using plate rolling & press brake equipment capable of handling wide plates and heavy wall thicknesses. Maximum size depends on material type, thickness, and geometry, but our team regularly produces large-scale cones for industrial and infrastructure applications.
Yes, we can work with customer-supplied material depending on project requirements. However, many customers choose to use our in-house inventory to reduce lead times and ensure material quality and traceability throughout the fabrication process.
Steel cones are widely used in industries such as power generation, mining, oil and gas, water treatment, and bulk material handling. They are essential components in systems requiring transitions, flow control, or load distribution.
Yes, we support both prototype and one-off fabrication as well as high-volume production runs. This flexibility allows customers to test designs before scaling into full production.
Lead times vary depending on material availability, cone size, complexity, and production volume. Standard projects can often be completed quickly due to our 24-hour production capabilities, while more complex fabrications may require additional time for engineering and assembly.
Yes, we regularly fabricate multi-section cones and complex geometries that require segmented construction, assembly, and welding. This is especially common for large diameter or heavy wall applications.
Get in Touch
Please fill out the form if you have any quick questions. An Arntzen representative will contact you within 2 business days.
Need help now? Call us toll free at:
Toll-Free: 800-957-7655
Ph: 815-334-0788
Arntzen Corporation
14600 Washington St
Woodstock, IL 60098