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We focus on mechanical metallurgy and surface treatments. We provide technical consulting on hot-dip galvanizing, quality inspections of protective zinc coatings on structural steel beams, and stress testing of industrial metal plates.
Applied engineering services for structural steel, fasteners, and metal plate protection.
Structural steel beams, columns, trusses
Zinc coating thickness 85–120 µm per ASTM A123. Bath chemistry optimized for low dross and maximum adhesion. Magnetic gauge verification on every batch.
Zinc-nickel alloy for fasteners
Alkaline zinc-nickel (12–18% Ni) applied to M6–M30 bolts, nuts, and washers. Trivalent chromate passivation included. Salt spray resistance exceeds 720 h to red rust.
On-site & lab analysis for metal plates
Visual inspection, coating thickness measurement, adhesion testing, and cross-section microscopy for tanks, vessels, and bridge plates.
One conversation can identify coating gaps before they become structural failures. Our engineers review your current protection specs and recommend next steps.
Request a Technical ConsultationEvery coating, every audit, every batch is measured against real metallurgical standards — not marketing claims.
We reject the “good enough” approach. Hot-dip galvanizing is held to ASTM A123 with magnetic gauge verification on every beam. If the coating falls below 85 µm, it does not ship.
Our zinc-nickel plating for fasteners is tested to exceed 720 hours to red rust. Trivalent passivation eliminates hexavalent chromium without compromising corrosion resistance.
We do not sell coatings — we diagnose failures first. Cross-section microscopy and adhesion testing reveal pitting, underfilm corrosion, and substrate condition before any treatment is recommended.
For structural steel beams processed at our facility, the zinc coating thickness ranges between 85 and 120 micrometres, verified in accordance with ASTM A123. Each beam is measured at multiple points using a magnetic thickness gauge to ensure uniformity and compliance with project specifications.
A standard batch of M6 to M30 fasteners, including cleaning, activation, zinc-nickel electroplating, and trivalent passivation, is completed within 4 to 6 hours. The exact duration depends on the total surface area and the required coating thickness of 8 to 15 micrometres.
Our audit covers visual inspection, coating thickness measurement, adhesion testing, and cross-section microscopy. We assess plates used in tanks, vessels, and bridges, identifying coating failures, substrate pitting, and environmental exposure risks. The final report includes prioritized remediation recommendations and estimated remaining service life.
Yes, we conduct on-site inspections for hot-dip galvanized steel beams, columns, and trusses. Our technicians use portable magnetic gauges for coating thickness, visual checks for bare spots and pinholes, and adhesion tests per ASTM D4541. A detailed inspection report is provided within five working days.
Our zinc-nickel alloy plating with trivalent passivation consistently exceeds 720 hours to red rust in neutral salt spray testing per ASTM B117. This makes the fasteners suitable for heavy machinery, automotive assemblies, and mining equipment operating in corrosive environments.