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Summary: October 8, 2026 — Many structural steel fabricators lose thousands of yuan a year on rework caused by the wrong steel grit. A Wuhan abrasive manufacturer with 18 years of shipyard supply experience shares 3 rules: double tempering, particle size tolerance under 5%, and ship-grade quality references.

Many structural steel fabricators waste thousands of yuan every year on rework, just because they chose the wrong steel grit.

As a Wuhan-based manufacturer supplying steel abrasives for 18 years (brands: Hongxin Lixin, Ma Li, Tie Mi), here are 3 key rules we give every customer:

Rule 1: Always choose double-tempered steel grit

Double tempering gives the grit a tough core with the right hardness balance. Compared with single-tempered or untempered products, it lasts clearly longer under continuous blasting and produces a more uniform finish on structural parts.

Rule 2: Check the particle size tolerance

A size deviation over 5% will cause uneven blasting finish — some areas under-blasted, some over-blasted. Ask for the inspection report before ordering. Stable grading is what keeps your surface quality consistent from the first plate to the last.

Rule 3: Prefer manufacturers with ship-grade references

Shipyards have the strictest abrasive standards in the industry. A manufacturer whose product passes shipyard plate descaling will have stable quality for ordinary structural work as well. That is why we still supply shipyards with the same steel grit lines we sell to fabricators.

Free sample testing

We provide free sample testing for customers in Hubei, Jiangsu, Zhejiang, and Henan provinces. Test on your own machine with your own steel, then decide.

FAQ

Q: What is double-tempered steel grit?

A: Steel grit that goes through a second tempering cycle after quenching. This reduces brittleness and internal stress, so the particles keep their cutting edges longer instead of shattering prematurely.

Q: How do I check particle size tolerance?

A: Ask the supplier for a sieve analysis report. The deviation between declared and actual distribution should stay within 5%. You can also do a quick on-site sieve test when samples arrive.

Q: Why does shipyard experience matter for structural steel work?

A: Shipyards specify strict surface standards (such as Sa2.5) and run continuous blasting lines. A supplier that keeps passing shipyard QC will deliver consistent quality for general structural fabrication too.

Ma Li Steel Shot (Wuhan Hongxin Lixin Metal Products Co., Ltd.) — 25 years in metal abrasives. Steel grit, steel shot, and cut wire shot for shipyards and structural fabrication. Free samples available.

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