Polished/Sanitary Vessels
At Ward Vessel & Exchanger, we can fabricate to all of your sanitary or polished needs. From Mill to #8 electro-polished mirror finish, we will meet your highest expectations!
Water Purification Units
Hand Reflection (#8 Mirror finish with electropolish)
Interior finish (10 Ra max. with electropolish)
Interior finish (10 Ra max. with electropolish)
Surface Finish Chart
Ward Vessel & Exchanger can fabricate with any of the following material finish options in stainless steel and nickel alloys.
| Finish No. | Common Name | Grit No | Ra (Microinch) | Description |
| # 1 | Mill Plate (Hot Rolled) | N/A | N/A | A rough, dull surface appearance with most of the mill scale removed by pickling. This finish applies to all plate products 3/16 ” and thicker. |
| #2 | Satin Sheet (2B Mill) | N/A | N/A | A smooth, bright, moderately reflective finish available only in 1/4″ or thinner sheet material (gauge thickness). Polishing after welding is not typical. |
| #3 | 100 to 120 | 52 | This finish is obtained with abrasives approximately 100 to 120 mesh with a pronounced grit line which may or may not be additionally polished during fabrication. | |
| #4 | Commercial #4 | 120 | 40-60 typ. | This finish is a general purpose sanitary polished finish widely used for pharmaceutical applications, dairy equipment, restaurant equipment, etc. Following initial grinding with coarser abrasives, sheets are generally finished last with abrasives approximately 120 to 150 grit. |
| #4 | 3A Sanitary | 150 | 42 Max | |
| 30-35 | ||||
| #4 | Sanitary Finish | 180 | 30 Max | |
| 20-30 | ||||
| #4S | “Bio-tech” | 200 to 220 | 25 Max | |
| 15-20 | ||||
| #6 | 240 | 15-20 | A dull satin finish having lower reflectivity than a # 7 finish. | |
| #7 | 320 | 12 Max | This finish has a high degree of reflectivity. It is produced by buffing of finely ground surface, but the grit lines are not removed. | |
| 8-12 | ||||
| #8 | Mirror Finish | 400 | 4-8 | The most reflective finish that is produced. It is obtained by polishing with successively finer abrasives and buffing extensively with very fine buffing rouges with the help of electro-polishing. The surface is essentially free of grit lines from preliminary grinding operations. |
| #8 | Super Mirror Finish | 500 | 4 Max |
