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Standard No. 4 Finish
Customers know they can rely on Stainless Polishing Company Division for uniform and consistent No. 4 sheet finishes on:
- Stainless Steel
- Brass or Bronze
- Aluminum
- Copper
- Cold Rolled Steel
- Muntz Metal
Pre-plate and Continuous Grain
Other finishes that can expand your sales and application opportunities include our "pre-plate" or 240 grit and "continuous grain" finishes. Let your customers know that these alternatives are available. We can provide samples of these finishes in coupon form.
Pre-plate Finish, also known as "240 grit", should be used when a much finer grain is required for more reflection of light, or when subsequent polishing to a No. 8 finish is planned. The pre-plate finish is achieved by extra passes with a finer grit belt to remove the still obvious grain structure of the standard No. 4 finish.
Continuous grain finish is a No. 4 finish with the added texture of a long scratch pattern. This is available only on plate or sheet processed on our Hill-Acme sheet-polishing machine. Our process breaks up the dull uniformity found in the satin-like standard No. 4 finish.
Wide Plate Polishing
Our proprietary plate polishing machine was designed and built by Stainless Polishing Co. to accomodate No. 4 finished plate extended to 8' wide. When your customers demand finished plate wider that 50" we use this gantry-type reciprocating plate polishing machine. A 6" wide belt traverses the plate back and forth in a 8' long stroke. The grain will run perpendicular to the length of the plate if the plate is longer than 96". This machine is capable of polishing a minimum thickness of 3/16". This is not an "architectural grade" finish.
- Economical Plate & Sheet Finishing
We finish plate up to 48" wide on our Hill-Acme machine, still the most economical method for producing the best finishes. Smaller sizes are grouped together on the Hill-Acme and run as a lot under the contact roll. In this way we take advantage of our large capacity and horsepower. No. 4 or better finishes can be put on stainless, copper, brass, and aluminum plate (3/16" and heavier), provided the plate is flat enough to permit contact as it goes throught the grinding and polishing equipment. We regularly process plate on one side or two sides to our "pre-plate" (240 grit) and "continuous grain" finishes. These premium finishes are available only on plate under 50" wide .
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Sheet Finishes:
24 thru 7 gauge x 48"
x 144" long
60 grit, No. 4, 180 grit
240 grit
"pre-plate", "continuous grain"
Plate Finishes:
3/16" thru 2" x 96" x 288" long
Up to 50" wide
80 grit, No. 4, 180 grit
240 grit
"pre-plate", "continuous grain"
Over 50" wide No. 4 only
Square or Rectangular
Tube Finish:
1/2" x 1/2" thru 4" x 4" x 20'
No. 4 (ask for radius polish)
Round Tube or Pipe Finish:
5/8" thru 6" OD x 20'
No. 4 (Poly Sleeve Protection)
Flat Bar Finishes:
1/8" x 1" thru 1" x 8" x 20'
No. 4 or 240 grit faces
No. 4 only on edges
Structural Finishes:
Phone us first with size (no inside surfaces, please)
No. 4
Protective Tape:
White, clear, blue (water proof
adhesive) or black & white for outdoor protection.
Experienced • Equipped • Versatile