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FAQ



A short list of our most frequently asked questions

Picture of steel leveller machine Picture of pickling acid tank

What makes Nelson Steel different in the industry?

Nelson Steel is uniquely positioned in the metals industry as both steel pickling operators and designers. This gives Nelson Steel the advantage of in-depth knowledge in pickling technology, making us an ideal choice as a supplier of steel pickling services and equipment. We have created processes to supply stain-free finished material and have developed industry-leading scrubber and injection process technology. We have adapted our systems to handle material that other facilities and mills cannot. Our on-site slitter line and newly installed leveling system offer further competitive advantage to customers. We take pride on running our lines 24/7 to meet the demands of our customers.

What is push-pull pickling technology?

Push-pull pickling is a process by which hot rolled steel coils are pushed through the pickling line to the recoiler, and in turn are pulled by the recoiler to complete the process. Coils initially enter a flattener to remove coil set, then enter a series of pickling tanks where mill scale (iron oxide) is removed using hydrochloric acid (HCl). Once pickled, the strip is rinsed and dried. Various coatings and oils can then be applied along with in-line slitting and side trimming. Finally the strip is recoiled and packaged. Nelson Steel offers push-pull pickling technology at its pickling facility and our system designers can custom build push-pull systems.

Does Nelson Steel consulting work extend beyond pickling projects?

Our Consulting and Technology Group primarily focuses on pickling line projects and related equipment, but our work has also included a wide range of projects, including consulting on new plant facility, the installation of strapping lines and processing equipment, among others. See our past projects for more information.

Can Nelson Steel source spare parts and make small repairs on pickling lines?

We can quickly supply the repair experts and spare parts available for: heat exchangers, piping, expansion joints, safety shields, pipe/fittings, granite, valves, strainers, fume systems, pumps, instrumentation, boiler systems and other miscellaneous components. Contact our engineering and repair team to get the parts and service you need.

Can you provide case studies of projects completed through Nelson Consulting and Technology Design?

A snapshot of our worldwide past projects are listed on our website. Further detail about the length, complexity and unique qualities of our past projects can be provided by calling or emailing our Consulting & Technology Group.

Does Nelson Steel have industry association memberships?

Nelson Steel has active membership with the American Institute of Chemical Engineers (AIChE), Professional Engineers Ontario, Steel Manufacturers Association, Association for Iron & Steel Technology (AIST), The American Iron and Steel Institute (AISI) and Metal Finishing Suppliers' Association (MFSA).

What is steel pickling? Why is it needed?

Pickling is a process to “clean” metal surfaces of stains, contaminants, rust, or scale.

This is achieved through a chemical reaction that the surface metal undergoes when being passed through a pickling line. Depending on the grade of the material being pickled and, the surface condition of the metal, the speed of the strip may be adjusted to allow for more dwell time in the Hydrochloric Acid. Following the pickling process, most sheet steel undergoes an oiling process to protect the newly cleaned metal from oxidation.

© Nelson Steel