Hot Rolled Pickled and Oiled Steel (HRPO) Steel Fabrication Services
Hot rolled pickled and oiled steel (HRPO) is descaled to remove surface impurities, delivering improved workability, ductility, and cost savings in downstream processes like bending, forming, welding, laser cutting, and painting.
At Alliance, our extensive inventory of Hot rolled pickled and oiled steel (HRPO) sheets has been descaled and oiled to extend longevity in corrosive environments. Request your quote today!
What is Hot Rolled Pickled and Oiled Steel (HRPO)?
Hot rolled steel products will scale in contact with oxygen and water vapor after the rolling process.
Pickling is a metal surface cleaning process in which an acid bath (either sulfuric or hydrochloric) removes rust, stains, and unwanted contaminants that could interfere with subsequent fabrication processes like bending, forming, painting, and stamping.
After the pickling process, steel can oxidize after extended exposure to oxygen and atmospheric moisture. Finally, the oil film is applied to the steel to create a protective shield.
What are Hot Rolled Pickled and Oiled Steel (HRPO) applications?
Hot rolled pickled and oiled steel sheets and coils are often used as an alternative to cold rolled steel due to a decreased cost. HRPO is well suited for many applications while offering improved workability and availability.
- Agriculture Equipment
- Automotive
- Construction
- Lawn and Garden Equipment
- Rack Systems
- Tubing
- The combination of workability, surface finish/corrosion resistance, better painting, improved welding, improved fabrication(bending, forming stamping, laser cutting) are some of the main advantages that hot rolled pickled and oiled (HRPO) steel has to offer.
- To aid in corrosion resistance, Hot Rolled steel is first pickled to remove scale and impurities from its surface, and lastly, the newly pickled steel is oiled to prevent rust and oxidation.
- The end effect is a smoother surface that enhances the material's formability and weldability, making it ideal for use in the manufacturing of machinery, automobiles, and buildings. HRPO steel is a popular option for projects requiring strong, long-lasting steel products, as it offers an affordable alternative with enhanced aesthetics and is suitable for additional processing or painting.
Pickling is used to clean hot rolled steel by removing impurities like rust, scale, and surface discoloration.
The steel is immersed in a solution typically composed of strong mineral acids such as sulfuric or hydrochloric acid to dissolve surface oxides and contaminants.
In addition to cleaning the steel, the pickling process enhances the steel's surface quality, making it more suitable for use in future manufacturing procedures.
Following pickling, a thin layer of oil is applied to the steel surface to prevent corrosion.
This oiling process forms a protective barrier that shields the material from moisture and other environmental elements.
Pickling hot rolled steel, on the other hand, efficiently eliminates flaky scale, leaving the entire sheet or coil with a uniformly smooth surface.
It is ideal for painting and enamel applications due to its consistency, which is crucial for achieving a high-quality finish.
Pickled Steel products have a clean, flat surface, which also makes other fabrication procedures easier. For example, welding HRPO (Hot Rolled Pickled and Oiled) steel is safer and more effective, as fewer surface impurities may compromise weld integrity. The smooth surface also enhances metal forming and bending operations by reducing tool wear and enabling more precise, consistent results.
Alliance Fabrication and Manufacturing strives to provide unparalleled customer service throughout the country. From Fortune 500 companies to emerging startups, we have the inventory and capabilities to deliver the quality steel products you need on time and at a competitive price.
Hot Rolled Pickles and Oil Steel (HRPO) offers distinct advantages such as improved workability, surface quality, formability, and ductility.
|
Enhanced Laser Cutting |
Enhanced Metal Forming |
Enhanced Welding |
| Increased Machine Capacity- More parts/ hour - Cutting 25% faster |
Closer tolerances |
Reduce labor for manual welds |
|
Closer Tolerance - Closer nesting |
Avoid downtime for die cleanup. |
Eliminate weld seam grinding |
|
Cleaner Cuts |
Longer lasting die/tooling |
No Pre - Cleaning required. HRPO Oils burns off in welding. |
|
Eliminates Pre etching when using |
Frequently Asked Questions
Alliance has an industry-leading inventory of HRPO and can process to your specification.
Common grades of HRPO are:
ASTM A1011 Hot Rolled Pickled Steel
Alliance stocks ASTM A1011 Hot Rolled Pickled Steel in:
- Commercial Steel (CS) & Drawing Steel (DS) Types A and B
- Structural Steel (SS): Grades 30-55
- HSLA (High Strength Low Alloys)
- UHSS (Ultra-High-Strength Steel): Grades 40 - 100
ASTM A1018 Hot Rolled Pickled Steel
Alliance stocks ASTM A1018 Hot Rolled Pickled Steel in:
- Commercial Steel (CS) & Drawing Steel (DS) Types A and B
- Structural Steel (SS): Grades 30-45
- HSLA (High Strength Low Alloys)
- UHSS (Ultra-High-Strength Steel): Grades 40-100
ASTM A36 Hot Rolled Pickled Steel
ASTM A36 Steel Plate is one of the most common grades of steel used in structural applications. The ASTM A36 standard covers low-carbon steels that are commonly used in construction, manufacturing, and other industries. It is considerably soft for easy forming, machining, and welding. Heat treatment has less effect on ASTM A36 steel material.
The Alliance family of companies offers a wide range of coil processing, fabrication, and manufacturing services.
These state-of-the-art services include:
- Manual and Robotic Welding
- Laser Cutting
- Metal Forming and Bending
- Stretcher Leveling
- Coil Slitting
- Multi Blanking and Cut to Length
- Logistics
- Toll Processing
Alliance repeatedly meets industry standards and customer requirements by setting the bar high. Alliance prides itself on creating strong partnerships by providing the right product on time and at a competitive price.
Our Quality Equipment Includes:
- High QA Integrated Manufacturing Quality Management Software
- Lecia Absolute Tracker – AT960 with T-Probe and Laser Scanner
- Measuring Instruments – Depth Gauges, Calipers, Height Gauges, Squares, Protractors, and Micrometers
- On Site - Certified Welding Inspector
Manufacturing Services
Robotic Welding
Robotic welding uses a robotic welding arm to perform the weld. These machines are…
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Laser Cutting
Laser cutting uses a highly focused light beam to melt material in a localized area.…
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Metal Forming & Bending
Sheet Metal Bending or Press Braking is the metal fabrication method of manipulating…
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Manual MIG Welding
Manual welding is a fabrication process that fuses two weldments at high heat and…
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Sheet Metal Assembly & Kitting
Sheet metal assembly is a valued added service of joining custom fabricated parts…
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Stretcher Leveling
Stretcher leveling is a process that stretches material sufficiently to exceed the…
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Value Added Engineering
Value Engineering is a design enhancement to improve manufacturing methods while…
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Do you have any questions regarding quotes, materials, manufacturing services, quality, supply chain solutions, and logistics? Creating custom supply chain solutions tailored to your specific needs and business is at the core of Alliance Fabrication and Manufacturing. Contact us today, and let's get started together.
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