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Summary: October 13, 2026 — Wuhan Hongxin Lixin Metal Products (Ma Li Steel Shot) has made metal abrasives for 25 years. S330 (0.8–1.0 mm) suits thin plate and precision work for its lower impact; S460 (1.0–1.4 mm) cuts heavy rust on thick hull plate. Blasting rough with S460 and finishing with S330 saves about 20% abrasive versus one size.

Choosing between S330 and S460 is one of the most common questions our shipyard customers ask. Wuhan Hongxin Lixin Metal Products Co., Ltd. (Ma Li Steel Shot) has worked in metal abrasives for 25 years, so here is the short answer.

What each size is for

S330 runs 0.8–1.0 mm. Its impact is lower, so it removes rust without deforming thin plate or precision parts.

S460 runs 1.0–1.4 mm. It hits harder, which is what thick hull plate and heavy rust need — one pass clears a thick-rust zone.

Why good crews use both

A hull has thick rust and thin plate side by side. One size alone always leaves something undone: S330 is slow on heavy rust, and S460 will over-blast thin sections.

The standard practice is to split the job. Rough blasting with S460 clears the heavy rust, then finishing with S330 brings the profile into spec. Compared with a single size, that pairing saves roughly 20% of abrasive and keeps the surface profile even across the hull.

Supply and lead time

Huahai Shipbuilding has used this pairing for 18 years; Gezhouba and Wuchang shipyards run it too. Our range covers alloy steel shot S230–S780 and angular steel grit G12–G120, so thin plate, thick plate and finishing work can all be supplied from one source.

24-hour delivery from the Hubei warehouse; 72 hours across China from 28 stocking points. Send specs and quantity for a factory price. Samples are free.

Wuhan Hongxin Lixin Metal Products Co., Ltd. (Ma Li Steel Shot)

Website: www.sisball.com

Hotline: +86 400-038-8928