Omni Metalcraft Corp.
P.O. Box 352  -  Alpena, MI 49707  -   ph: 989.358.7000




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APPLICATION
Extreme Environment
Bag Handling
Box and Tote Handling
Tire and Wheel Handling
Assembly
Washdown

INDUSTRY

None Specified


Stainless Steel and Washdown Duty

Conveyors and Material Handling Equipment

Omni Metalcraft Corp. combines industry experience, proven engineering standards and design flexibility to provide the right solutions for applications that require stainless steel materials. From sanitary stainless steel processing conveyor to case handling and even rugged back-end pallet handling conveyor, Omni has the stainless steel solution to do the job. Omni is also able to provide unique equipment designs or any special features necessary to meet the requirements of your specific application. We encourage you to challenge us with your custom stainless steel fabrication needs!
Stainless Steel and Washdown Duty
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What are Omni's Stainless Steel Product Classifications?

 

Omni product classifications help describe material options and design features generally offered together for use in various washdown, corrosive, and food processing applications and environments. These specifications may be modified and combined to suit individual customer requirements as needed.

 

 

ULTIMATE (U-CLASS)

 

U-class stainless steel material handling components are used for sanitary and food processing applications. These products are manufactured in accordance with American Meat Institute (AMI) and USDA sanitary design criteria and are intended to be easily cleanable, accessible and inspectable.

 

§  Manufactured with 304 stainless steel, polished finish materials, unless otherwise noted

§  Sanitary frame & leg support designs

§  Sanitary "water-tight" roller designs

§  Stainless steel or polymer housed roller & flange mounted bearings

§  Washdown rated, epoxy painted motors & reducers

§  FDA/USDA approved belting materials

§  NEMA-4x enclosures & components

§  Continuous TIG welds

§  Popular Options Include:

§  Stainless steel motors & reducers

§  316 stainless steel materials

 

 

PREMIUM (P-CLASS)

 

P-class stainless steel material handling components are generally used for frequent washdown, high-corrosive, and food processing applications.

 

§  Manufactured with 304 stainless steel, mill finish materials, unless otherwise noted

§  Standard frame, leg support & roller designs

§  Rollers with thru-bore bearings are NOT "water-tight"; liquid may become trapped inside

§  Stainless steel or polymer housed roller & flange mounted bearings

§  Washdown rated, epoxy painted motors & reducers

§  Stainless steel sprockets & fasteners

§  Corrosion-resistant chain

§  FDA/USDA approved belting materials

§  NEMA-4x enclosures & components

§  Non-continuous MIG welds

§  Popular Options Include:

§  Polished stainless steel finishes

§  316 stainless steel materials

§  Special frame & leg support designs

§  Special "water-tight" roller designs

§  Continuous TIG welds

 

 

DELUXE (D-CLASS)

 

D-class corrosion-resistant material handling components are made primarily from carbon steel materials and are generally used for occasional washdown and low-corrosive applications.

 

§  Standard frame & leg support designs (epoxy painted, galvanized or aluminum)

§  Standard roller designs (zinc plated, galvanized, PVC, stainless steel or aluminum tubing)

§  Rollers with thru-bore bearings are NOT "water-tight"; liquid may become trapped inside

§  General purpose roller & flange mounted bearings

§  Washdown rated, epoxy painted motors & reducers

§  General purpose sprockets & chain

§  Zinc plated fasteners

§  General purpose belting materials (white PVC / galvanized wire mesh / plastic modular)

§  NEMA-4x enclosures & components 

 


 

What Surface Finishes are Available?

 

Mill Finish:

 

Steel mills and warehouses perform various operations such as hot rolling, cold rolling, annealing and pickling, during the production of stainless steel basic mill forms – plate, sheet, strip, bar, tubing and wire. These operations are intended to bring the steel product to a specific shape, dimension, and metallurgical condition. The resulting finish is generally referred to as a mill finish. It may also be described as a rolled or unpolished finish. The most common stainless steel sheet finish produced is described as a No. 2B mill finish. It is a bright, smooth, semi-reflective, and non-directional finish. No. 2B sheet has a surface roughness with a maximum Ra of 32 micro-inches, which is equivalent to (or better than) a 150 grit finish, and is considered equal to (or more smooth than) a No. 4 polished finish.

It should be noted that different grades and thicknesses of stainless steel can result in a variation of visual appearance for the same finishing operation. It should also be noted that areas where welds and tool marks were cleaned-up cannot be blended or repaired to recreate an original mill finish appearance. These reworked areas will remain apparent unless additional surface finishing operations are performed.

 

Polished Finish:

 

Subsequent mechanical operations which include grinding, polishing and buffing are intended primarily to change the appearance and condition of stainless steel metal surfaces. The finish resulting from these operations is referred to as a polished finish. It may also be described as a brushed or satin finish. The most common stainless steel sheet cosmetic polished finish is described as a No. 4 finish. It is a bright, uni-directional finish with a visible "grain" which prevents mirror reflection. It is obtained by finishing with a 120-150 mesh abrasive, following initial grinding with coarser abrasives, and has a surface roughness with a maximum Ra of 32 micro-inches. A No. 4 polished finish is generally only produced on one side of the sheet while the reverse side is generally either a No. 2B or No. 3 finish.

It should be noted that areas where welds and tool marks were cleaned-up can be blended or repaired by using the same or similar polishing methods that were used to create the original finish.

 

Blasted Finish:

 

Additional surface treatments performed to change the appearance of stainless steel include blasting with abrasive mediums. Glass bead blasting produces a bright uniform matte or frosted finish with low reflectivity and no directionality. It reduces glare from shiny stainless steel while still retaining a smooth feel. It has a surface roughness with a maximum Ra of 125 micro-inches. Sand blasting produces a much duller and less smooth finish than glass bead blasting.

 

 



 
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