1 Product Overview

ZSJH fabricates steel frames with hot-dip galvanized protection for exposed building and industrial applications. Frame geometry, joints and enclosed spaces are reviewed before dipping so treatment and assembly requirements are coordinated. Components are inspected after galvanizing and delivered with member marks and protected contact areas according to the approved supply plan.

2 Product Specifications

Final material, dimensions, acceptance criteria and included operations are defined by the approved drawings and contract.

3 Design the frame for galvanizing

Closed sections and overlapping details require safe venting and drainage agreed with the galvanizer. Component dimensions and lifting arrangements are checked against the treatment process. Long or complex frames may be divided into bolted modules. Vent holes and connection details must remain consistent with the approved structural design.

4 Post galvanizing fit and coating acceptance

Fabrication dimensions are accepted before dipping. Post-treatment checks cover distortion, hole access, zinc build-up and coating condition. Coating thickness and local repair criteria follow ISO 1461, ASTM A123 or the specified project standard, as applicable. Specified mating surfaces and fasteners require their own acceptance requirements.

5 Outdoor supply and maintenance planning

Frames may support outdoor equipment, utility installations or exposed building systems. Corrosion protection is selected for the actual exposure; zinc does not provide an identical service life in all environments. Packing avoids abrasion and provides drainage and ventilation. Site cuts, welding and transport damage require approved repair procedures.

6 Delivery Workflow

Frame drawings → Galvanizing detail review → Fabricate → Inspect geometry → Dip → Check coating and fit → Approved repairs → Mark and protect

7 FAQ

Can fully sealed hollow frames be dipped?

No. Venting and drainage provisions must be accepted before galvanizing.

Can the frame receive paint after galvanizing?

A duplex system can be reviewed. Preparation and paint compatibility must be specified for the galvanized surface.

8 Request a Quotation from ZSJH

Get a Custom Steel Fabrication Quote

Send ZSJH your drawings, galvanizing requirements and delivery destination. We’ll review your project and confirm scope, quality requirements and lead time. Procurement and production begin after written approval of fabrication documents.

Email: sales@zsjhsteel.com | WhatsApp: +86 151 2258 2058