Hot-Dip Galvanizing Services
Hot-Dip Galvanizing Services
Design the fabrication for zinc coverage.
Review hot-dip galvanizing for steel fabrications before the design is released. Send assembly drawings with hollow sections, welds and fit requirements so venting, drainage and the finished coating can be considered together.
Confidential files. Optional NDA available.
Steel fabrications and brackets where a hot-dip zinc protection route is appropriate for the service environment.
Sealed cavities and trapped liquids are serious process hazards. Venting and drainage must be reviewed with the processing route before fabrication.
What this process does
Hot-dip galvanizing immerses prepared steel in molten zinc to form a protective zinc coating. It is distinct from zinc electroplating and requires design consideration for immersion, drainage and dimensional effects.
Choose the route from your requirements.
Use these points to prepare an enquiry. The selected process, material compatibility and acceptance criteria should be confirmed for your drawing.
On smaller screens, scroll the table horizontally.
| Your requirement | What to specify | What to review |
|---|---|---|
| Hollow sections | Show all enclosed and overlapping volumes. | Agree vent and drain provisions before fabrication. |
| Mating assemblies | Identify threads, holes and fitted interfaces. | Review coating allowance and assembly method. |
| Thin or asymmetric fabrications | Provide thickness changes and weld layout. | Assess distortion risk and dimensional acceptance. |
| Paint over galvanizing | Specify the complete duplex coating system. | Agree compatible preparation and subsequent painting. |
Still comparing routes? Explore the surface finish guide or send your drawing for review.
Protect the features that make the part work.
Mark the surfaces that carry function, fit and appearance. A clear drawing helps separate essential requirements from unnecessary processing.
Venting and drainage
Processing orientation determines where trapped air and liquid must escape. Hole placement and size require part-specific review; do not use a generic hole as a substitute.
Appearance expectations
Spangle, local texture and zinc accumulation may differ from an electroplated or painted finish. Agree cosmetic acceptance for exposed parts.
Fabrication sequence
Review weld cleanup, mixed materials and any later machining. Explain how exposed areas from subsequent work will be handled.
Agree the evidence before production.
Inspection should answer the requirements on your order. Define the method and acceptance criteria when a characteristic is important to the application.
- Venting and drainage design approved
- Coverage and coating thickness criteria agreed
- Final dimensions and threaded assembly reviewed
- Local repair method and appearance acceptance established
Testing and documentation are confirmed in the quotation. A finish name or reference image does not establish certification, performance or compliance.
From drawing to an agreed finish.
Send the part context
Share the drawing, material, quantity and operating environment. Identify cosmetic and functional surfaces.
Review the process
Resolve preparation, access, masking and the sequence with machining or other finishing operations.
Confirm acceptance
Agree samples, measurements and documentation. Record the approved drawing revision and open requirements.
Release the order
Confirm the quoted route, schedule and packing requirements before work starts.
Is galvanizing the same as zinc plating?
Both use zinc, but hot-dip galvanizing and zinc electroplating use different processes and design allowances. Select the route from the drawing, exposure and assembly requirements.
What should I send for a quotation?
Send the drawing revision, material grade, quantity and assembly and hollow-section drawings, steel grades, welds and combined thicknesses. Mark the required surfaces and any acceptance tests. Include your target date and shipping destination.
Can I send parts that are already manufactured?
State that the parts are customer-supplied and include their current condition, existing coatings and dimensions. Acceptance, incoming inspection and the finishing route need confirmation before shipment.
Can you provide a specific inspection report?
List the required characteristics, test methods, sample quantity and report format with the enquiry. The quotation should confirm the agreed inspection scope; additional tests are not implied by the service name.
What affects price and lead time?
Part size, quantity, incoming condition, preparation, masking, finish requirements and inspection scope all affect the route. Share the complete specification so cost and schedule can be confirmed for the order.
Ready to finish your parts?
Send your drawing, material and quantity for a finishing quote.
Confidential files. Optional NDA.
Compare related services.
Technical background: these sources explain process principles. Supplier examples do not establish ProleanTech equipment, certification or project capability.