After the National Day holiday, many manufacturing companies are resuming production. Shot blasting is the first step in surface treatment, and choosing the right steel shot directly affects production efficiency and product quality.

Many buyers make the mistake of only looking at the unit price when purchasing steel shot. In fact, different workpieces, different machines, and different process requirements require different steel shot sizes.

1. Choose by workpiece material

• Cast iron and steel structures: S330/S390 medium shot, high cleaning efficiency
• Precision castings and auto parts: S170/S230 fine shot, good surface finish
• Stainless steel parts: stainless steel shot, avoid secondary rust

2. Choose by blasting machine

• Hanger type: slightly larger shot is fine
• Tumblast type: medium to small shot
• Pass-through type: adjust shot size based on conveyor speed

3. Choose by process requirement

• Rust removal only: coarser shot for efficiency
• Rust removal plus strengthening: medium shot
• Shot peening: small diameter shot for coverage

A quick note on cost

Unit price is not the same as operating cost. A higher-density shot at a slightly higher price often consumes less per ton of cleaned workpiece, which brings the real cost down.

Choosing the right steel shot not only ensures product quality but also lowers unit cost. Wuhan Hongxin Lixin has 20 years of experience in manufacturing steel shot and grit. We provide a free selection service and sample testing.

Website: http://www.sisball.com/ | Hotline: +86 400-038-8928