Agitator Fabrication Tub Fabrication Interior Views Safety Grates Photo 1 | 2 | 3 | 4 Lids / Backrests Packing Glands Sumitomo Motors / VFD's Machine Finish Paddle Blenders Custom Machines Stock Blenders		Photo shows standard safety grate in place over the agitator. On food and pharmaceutical grade machines, large diameter welds are used in all stee joints. They are ground smooth and polished.