Hot-Dip Galvanizing Corrosion Protection in Civil Construction, Steel Structures & Bridges

Galvanizing Specifications

Galvanizing Kettle Size Specifications & Actual Processing Limits

The zinc kettle measures 13.5 × 1.8 × 3.0 meters. Actual processable dimensions must allow for lifting gear, inclination, entry and exit angles and safety clearance. For oversized components, we recommend providing drawings for evaluation before delivery.

Kettle Length

13.5 m

Kettle Opening Width

1.8 m

Actual Depth

3.0 m

Recommended Hanging Angle

30°–45°

Key Points

These dimensions are kettle specifications, not a guaranteed limit for components that can be processed directly. Actual dippable dimensions depend on component shape, hanging method, hole design and on-site safety clearance.

Galvanizing Kettle Size Specifications

Specification Dimension Notes
Length (L) 13.5 meters Determines the maximum length of an item that can be dipped in a single pass.
Width (W) 1.8 meters Net width of the kettle opening.
Depth (D) 3.0 meters Actual depth of the zinc kettle.

Table dimensions are kettle data; actual processing must still be further confirmed based on component shape and hanging conditions.

Actual Processing Limits & Notes

Although the zinc kettle measures 13.5 × 1.8 × 3.0 meters, the actual component dimensions must be smaller than the kettle's net dimensions, with allowance for lifting gear, inclination and safety clearance.

01

Maximum Single-Dip Limits

We recommend keeping the length within 12.5–13 meters, width under 1.5 meters, and depth under 2.5 meters.

02

Extra-Long / Extra-Tall Components

If a component exceeds the single-dip length, some structures can use Double Dipping: galvanizing the first half, then turning it to process the second half.

03

Hanging Angle Requirements

When entering and leaving the kettle, components usually need to be kept at 30°–45° an inclined angle to allow molten zinc to drain quickly and air to escape.

Points to Confirm Before Delivery

  • Whether component dimensions are within the recommended single-dip range.
  • Whether the lifting points can support inclined hanging and turning of the component.
  • Whether zinc flow holes and vent holes are sufficient to avoid zinc accumulation or explosion risk.
  • Whether extra-long, extra-wide or extra-tall components need an engineer's evaluation of double-dipping feasibility.