Summary: October 8, 2026 — For shipyards in South China, rust and salt corrosion on steel plates are a daily headache. Cheap ordinary steel shot breaks into powder after 3 days, and the required Sa2.5 roughness cannot be achieved. Here is how S460 alloy steel shot plus 1.0 cut wire shot solves it.

For shipyards across South China, rust and salt corrosion on steel plates are always the biggest headache. Cheap ordinary steel shot breaks into powder after 3 days of blasting, and the required Sa2.5 roughness just can't be achieved.

Wuhan Hongxin Lixin (Ma Li Steel Shot) has supplied S460 alloy steel shot and 1.0 cut wire shot to Huahai Shipbuilding since 2008 — 18 years of continuous supply for their plate pretreatment line. The same combination has been used in major ship repair and maintenance projects for years.

Why ordinary steel shot fails on ship plates

Most buyers look at price per ton, not actual blasting life.

Ordinary shot without double tempering looks hard but is brittle. When it hits thick rust layers on ship plates, it shatters on impact. Broken particles have no cleaning power and add load to dust collection systems. One ton of cheap shot may deliver only a fraction of the effective blasting time of a proper product.

What makes S460 different

Our S460 shot contains special alloy elements and is double tempered. On thick rust layers it does not bounce away or fracture — the particles stay whole, and surface roughness stays stable at Sa2.5.

Paired with 1.0 cut wire shot in a graded mix, abrasive consumption drops significantly compared with ordinary products. For heavy-duty projects, this combination has been proven in long-term service.

3 rules when sourcing abrasives for ship plates

1. Ask whether the shot is double tempered. Shot without it breaks within days under heavy blasting.

2. Request a particle size inspection report. A deviation over 5% will make roughness unstable, and repainting failures cost far more than the abrasive.

3. Choose a supplier with shipyard references. Ship plate descaling is different from ordinary structural work — thick rust, salt fog, and a proven graded mix of S460 plus 1.0 cut wire shot.

Delivery and sample testing

With 28 warehouses nationwide, we deliver to shipyards within 72 hours across most of China. Free samples are available for testing on your own machine and plates before ordering.

FAQ

Q: What is the difference between S460 alloy steel shot and ordinary shot?

A: Alloy composition and heat treatment. S460 contains special alloy elements and is double tempered, so particles stay intact on thick rust and roughness holds at Sa2.5. Ordinary shot shatters, and consumption can differ by a third.

Q: Is 1.0 cut wire shot necessary in the mix?

A: For ship plate descaling, S460 plus 1.0 cut wire shot is a long-proven graded combination. Cast shot breaks the rust; cut wire shot sweeps and builds the anchor profile. Together they cut total consumption.

Q: How fast is delivery, and can I test first?

A: 72-hour delivery through 28 warehouses nationwide. Free samples are available so you can verify performance on your own blasting line before placing an order.

Ma Li Steel Shot (Wuhan Hongxin Lixin Metal Products Co., Ltd.) — 25 years in metal abrasives. S460 alloy steel shot, 1.0 cut wire shot, and angular steel grit in stock. Free samples.

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