Automatic Hot Dip Steel Bar Galvanizing Equipment - Rebar Galvanizing Production Line

Galvanized steel bars are coated with a layer of zinc on the surface of ordinary steel bars, mainly achieved through methods such as electroplating and hot plating. The main characteristics of galvanized steel bars are as follows.

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Product Introduction

Automatic Continuous Hot-Dip Galvanizing Equipment for Steel Bars & Rebar

Turnkey industrial continuous hot-dip galvanizing production line engineered for steel bars, reinforcing rebar, and structural steel rods. Features automated pre-treatment pickling, fluxing, drying, ceramic zinc kettle immersion, automated air-knife zinc coating thickness wiping, and immediate water quenching for superior anti-corrosion performance.

Ceramic Induction Zinc Kettle

Internal ceramic lined zinc bath with submerged induction heating prevents kettle iron dissolution and extends bath life over 10 years.

Air-Knife Thickness Regulators

High-pressure annular air knives wipe excess molten zinc, delivering uniform coating weights from 300 to 900 g/m².

Automated Continuous Feed

Roller conveyor system transports steel bars smoothly through fluxing, pre-heating, and zinc immersion baths.

Enclosed Acid & Zinc Fume Scrubber

Full-enclosure hoods with wet scrubber towers neutralize hydrochloric acid fumes and zinc smoke for clean factory air.

Engineering Specifications & Technical Data

Galvanizing Line Field	Technical Benchmark
Processed Material Range	Deformed rebar (Φ8mm - Φ32mm), smooth steel bars (Φ10mm - Φ50mm), threaded rods
Bar Length Capacity	6 meters - 12 meters standard length (Customizable for up to 15m bars)
Zinc Coating Standard	ISO 1461, ASTM A123, ASTM A767 / A767M Class I & Class II
Zinc Coating Thickness	45 μm - 125 μm (320 - 900 g/m² zinc weight)
Zinc Kettle Temperature	440°C - 460°C with PID automatic heating control (±2°C)
Production Line Capacity	10,000 to 50,000 Metric Tons per Year
Heating Source Options	Natural gas burners, LPG, or electric induction immersion heaters

Core Design & Operational Advantages

Superior Rebar Bond Strength: Hot-dip zinc coating forms metallurgically bonded iron-zinc alloy layers with zero flaking during rebar bending.
Automated Zinc Dross Skimmer: Mechanical skimming arm automatically sweeps top zinc dross to maintain mirror-smooth bar finish.
Inline Passivation Quench Tank: Chromate-free passivation bath prevents white rust storage staining during sea freight.

Buyer Inquiries & Technical FAQ

Q: Does hot-dip galvanizing meet ASTM A767 standards for bridge and marine concrete rebar?
A: Yes, our continuous line fully complies with ASTM A767 Class I (1070 g/m²) and Class II (610 g/m²) requirements for heavy marine infrastructure.

Q: How does the ceramic kettle compare with traditional steel zinc kettles?
A: Ceramic kettles eliminate zinc-iron alloy dross formation caused by kettle wall erosion, saving up to 15% zinc consumption and lasting 3x longer.

Consult With Our Senior Engineering Team

Get customized production calculations, 3D factory layout drawings, and direct factory pricing within 24 hours.

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