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PRC / PRODUCTION LINES & EQUIPMENT

Steel Pipe Hot Dip Galvanizing Line

Immerses surface-prepared black steel pipes in molten zinc to coat both internal and external surfaces. Designed for finished pipes, with a material format and equipment arrangement distinct from continuous strip galvanizing.

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Steel Pipe Hot Dip Galvanizing LineView equipment photograph ↗
01 / APPLICATION

Application, materials & output

Feedstock is finished steel pipe ready for galvanizing; the output is galvanized pipe with coated internal and external surfaces. Selection requires diameter, wall thickness, length, unit weight, steel grade, coating requirements and output.

02 / SPECIFICATION

Specification & selection

Provide the diameter range, wall thickness, pipe length, unit weight and annual output so the equipment size, production cycle and layout can be selected.

03 / PROCESS & EQUIPMENT

Process & equipment

  1. 01Surface preparation
  2. 02Drying & heating
  3. 03Zinc immersion
  4. 04Extraction, lifting & blowing
  5. 05Cooling & finishing

Thermal & galvanizing sections

Drying furnace, heating furnace and galvanizing machine.

Extraction & handling

Pipe extraction machine, lifting mechanism, lifting roller table and transverse transfer mechanism.

Internal blowing & post-treatment

Combined steam-and-air or guide-rod internal blowing, levelling mechanism, cooling tank, spray roller table and marking roller table.

Electrical equipment

Associated electrical equipment and interfaces between sections. The final supply boundary is agreed in the technical proposal.

04 / OPTIONS

Configuration & selection

Discuss combined steam-and-air or guide-rod internal blowing against pipe dimensions and process requirements. Include surface appearance, internal coating, marking and downstream logistics requirements.

05 / UTILITIES

Site & utilities

Review building height, pipe handling routes, zinc-pot and thermal equipment layout, and water, power, compressed-air or steam interfaces. Utility consumption and exhaust handling depend on the final arrangement.

Related equipment

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Share the material, key dimensions, output and site conditions to discuss the process and equipment configuration.

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Frequently asked questions

Practical answers about selecting equipment and preparing a project. Open a question to read the details.

What information is needed for a useful quotation?

Start with the material grade and applicable standards, incoming and finished thickness and width, coil weight and diameters, or tube and section sizes. Add the product mix, annual tonnage, dimensional tolerances, surface requirements and the intended application. A sample product table is more useful than a single maximum size.

Also state the project location, available workshop space, existing equipment, utilities and target start-up date. Mark undecided items as TBD; PRC can discuss selection assumptions before the technical scope is fixed. A budget range is optional. Final technical and commercial terms are confirmed in the project documents.

Can all published maximum specifications be achieved together?

Not necessarily. A product-family range is not a guarantee that maximum width, thickness, strength, speed and annual output can all be reached at the same time. The feasible operating window depends on the material, product mix, equipment configuration and process conditions.

Annual capacity must account for the pass schedule or line speed, operating hours, coil changes, maintenance and product yield. Thickness tolerance, flatness, coating quality and energy figures require defined measurement and acceptance conditions. Confirm the configuration and test product matrix with PRC rather than combining limits from different models or routes.

What is included in a complete-line project?

The scope may include process and equipment selection, main and auxiliary equipment, electrical systems, automation, interface documents, installation supervision, commissioning and operator training. A complete-line contract does not automatically mean responsibility for the entire factory or every building service.

The technical agreement should identify who supplies foundations, buildings, cranes, external utilities, installation labour, test materials and local approvals. It should also define drawings, deliverables, performance tests, spare parts and service responsibilities. PRC also discusses individual equipment supply and revamps where a complete line is not required.

What site conditions and utilities should the customer prepare?

Prepare the workshop dimensions, floor levels, crane capacity, access and logistics, existing foundations and maintenance clearances. Provide the available electrical supply, cooling water, compressed air, ventilation and any process-specific media relevant to the chosen equipment.

Foundation loads, connection points, supply quality and flow requirements must come from the selected design; generic consumption figures should not be used as construction data. Coordinate material storage, coil handling, emergency access and the boundary between supplier and customer works. Local safety, environmental and construction requirements also need to be considered for the project location.

Questionnaire