Congratulations ! Egypt customer orders a double pot continuous hot dip galvanizing line from HiTo Engineering

HiTo Engineering cooperate with Egypt customer again. In 2022,the customer ordered a coils continuous color coating line from HiTo Engineering. After installation and commissioning, the production line features simple operation and has been running stably all the time. The produced color-coated coils enjoy excellent quality with uniform coating. Customer is very satisfied with HiTo Engineering's professionalism and service.

Due to the sharp surge in order volume and strong market demand for galvanized coils in Egypt.In April 2026,customer cooperated HiTo Engineering again,he ordered a double pot galvanizing line -----A continuous hot dip galvanizing line can produce ZAM coils and galvanized coils.

During the business negotiation,we collected the key concerns of Customer for Double-pot Galvanizing Production Line :

I. Core Capacity & Efficiency

1. Annual output of double-pot galvanizing production line; applicable range of strip thickness & width

Standard double-pot galvanizing production line: annual output up to 450,000 tons.
Applicable strip thickness: 0.15mm – 2.0mm; width: 800mm – 1500mm. Custom widened or thickened models are available for narrow/wide width and thin/thick material requirements.

2. Switching logic of double-pot system: independent or linked operation; production stop for specification change; switching time between two pots

The double-pot system adopts dual mode: independent operation + linkage backup.
No production stop is required for normal specification change; one pot operates in production while the other is preheated on standby.
Specification switching time: ≤15 minutes. It supports non-stop continuous production change and seamless order connection, ideal for multi-specification & small-batch order production.

3. Operating speed, speed increase stability and continuous trouble-free production duration

Process operating speed: 15–60m/min, stepless adjustable.
Equipped with full-machine variable frequency speed regulation and closed-loop control, featuring stable speed-up without jitter and no strip deviation.
Standard design for continuous trouble-free operation: ≥300 days, supporting 7×24 hours non-stop mass production.

II. Key Product Quality

1. Galvanized layer uniformity, controllable zinc coating range and thickness deviation precision

- Longitudinal & transverse uniformity deviation of galvanized layer: ≤±3g/㎡
- Controllable zinc coating range: 40–600g/㎡
Automatic closed-loop adjustment with precise setting and high thickness precision, complying with national standards and European export standards.

2. Surface quality: no missing plating, uneven spangle, scratches or oxidation defects

Equipped with scratch-proof conveying rollers and sealed protective atmosphere.
No missing plating, no yin-yang surface difference, no uneven spangle size, no surface scratches or later oxidation blackening.
Full-process inert gas protection ensures high surface cleanliness, suitable for home appliance sheets, construction sheets and prepainted coil base sheets for export.

3. Production capacity for high zinc coating, low zinc coating and special-specification galvanized coils

Stably produces galvanized coils with high zinc coating, low zinc coating, mini spangle and zero spangle.
Supports customized production of deep drawing grade sheets and special-process base sheets for paint baking.

4. Finished product flatness and shape control effect

Fitted with high-precision tension leveler and online shape control system.
Finished product flatness controlled within ≤5I, free of wavy edges and buckling, without processing defects in subsequent slitting, film laminating and color coating.

III. Equipment Configuration & Process

1. Double-pot furnace structure, heating mode (gas/electric heating) and temperature control precision

- Integrated one-piece double-pot furnace structure with thickened thermal insulation layer and low heat dissipation loss.
- Main configuration: gas heating; electric heating optional for dual-purpose use.
- Intelligent sectional temperature control with precision of ±1℃, uniform temperature field to avoid uneven coating caused by local temperature difference.

2. Process configuration of annealing furnace and reduction furnace; adaptability to different substrates such as carbon steel and high-strength steel

Sectional temperature control + protective atmosphere process adopted for annealing and reduction furnaces.
Compatible with raw materials including ordinary carbon steel, high-strength steel, cold-rolled base material and hot-rolled pickled material; one-click switching of process parameters available.

3. Zinc pot material, service life and maintenance & replacement cost

Zinc pot made of specially customized high-strength heat-resistant alloy material.
Service life under normal working conditions: 8–12 years, with high corrosion resistance and high-temperature scouring resistance.
Modular structure for convenient later maintenance and replacement, with low comprehensive maintenance cost.

4. Configuration and brand of deviation correction system, oil coating system and cooling system

Standard equipped with high-end photoelectric deviation correction system, automatic oil coating system and forced air cooling & circulating cooling system.
Key electrical, pneumatic and sensor components adopt first-tier brands with high stability and low failure rate.

IV. Energy Consumption & Operation Cost

1. Unit energy consumption of gas/electricity and energy-saving design

Multi-layer furnace insulation and waste heat recovery energy-saving structure adopted for the whole furnace.
Unit gas and power consumption are 10%–15% lower than ordinary industry models.
Integrated variable frequency energy-saving control with automatic energy consumption reduction under no-load and light-load conditions.

2. Zinc consumption (zinc consumption per ton of steel) and auxiliary material consumption cost

Zinc consumption per ton of steel maintained at a low industry level.
Stable process and less zinc slag greatly reduce zinc slag loss.
Low consumption of auxiliary materials such as flux and passivating agent with mature formula and controllable cost.

3. Equipment failure rate, wearing parts list & replacement cycle, after-sales maintenance cost

Modular whole-machine design with extremely low failure rate.
Wearing parts are conventional universal models with complete list delivered ex-factory, long replacement cycle and convenient procurement.
The manufacturer supplies accessories at a stable preferential price for a long term with no hidden high maintenance cost in later stage.

V. Installation, Delivery & Construction Period

1. Equipment footprint, workshop layout requirements and foundation civil engineering conditions

Standard footprint of the whole line can be customized and planned according to the customer’s workshop.
Provide layout drawings and equipment foundation drawings.
Conventional requirements for workshop height, load-bearing capacity and ground foundation; no special high-standard civil engineering required, compatible with old workshop renovation.

2. Production delivery cycle and on-site installation & commissioning cycle

- Equipment production cycle: within 150 days after receiving deposit.
- On-site installation and commissioning cycle: within 150 days.
Systematic and strict training for workshop operators will be provided after commissioning, ready for mass production immediately.

3. Electrical control system: PLC brand, automation level, one-click start-stop and formula storage

Standard equipped with well-known imported PLC and touch screen control system.
Full-process automation with one-click start-stop and storage of multiple production formulas.
Parameters for different thickness and zinc coating specifications can be directly called for quick operation even for novice operators.

VI. After-sales & Technical Support

1. Warranty period, on-site installation & commissioning and on-site technical training

- Whole machine warranty: 1 year; longer warranty for core furnace body and zinc pot.
- Free on-site installation, commissioning and production guidance; free on-site practical operation and process training for operators and technicians.

2. Remote operation & maintenance, fault early warning and long-term accessory supply

Support remote network operation & maintenance, online fault diagnosis and remote parameter optimization.
Establish long-term accessory supply inventory with express delivery available at any time to avoid production delay.

3. Support for customized transformation, old line upgrading and process parameter optimization

Customized process, speed increase, width expansion and higher zinc coating capacity can be realized according to product requirements.
Provide transformation service for old galvanizing production lines, double-pot reconstruction, process upgrading and capacity expansion upgrading.

VII. Price & Payment Terms

1. Lump-sum price of the whole line and included configuration details 

Provide all-inclusive lump-sum price of the whole line, attached with detailed configuration list and equipment details with clear included items and no hidden price increase in later stage.

2. Payment method, delivery terms, sea freight packaging and supporting customs declaration documents

Common foreign trade payment terms: 30% deposit + 70% balance before shipment, L/C letter of credit negotiable.
Provide standard sea freight packaging with fixed moisture-proof and rust-proof treatment.
Complete supporting customs declaration documents including packing list, invoice and certificate of origin.

3. Price standard for later capacity expansion and additional configuration

Unified price standard for later speed increase, width expansion, system addition and process upgrading is agreed in advance with transparent cost, avoiding high re-negotiation price for future expansion.