Galvanized Round Pipe Production Line

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Product Detail

PRODUCT MODEL LIST

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Production Line for Welded Pipes Made from Pre-Galvanized Strip Steel (The Most Common Type)

Raw Material: Pre-galvanized steel strip, which is formed and welded, with the weld seam subsequently treated with zinc.

Applications: Greenhouse frames, scaffolding, electrical conduit, and structural frameworks.

https://www.ztzgsteeltech.com/round-tube-mill-round-pipe-mill/

P Process Flow

Uncoiling → Leveling → Shearing and Butt-Welding → Accumulator (Looping) → Forming Stands → High-Frequency ERW Welding → External Burr Removal → Weld Seam Cooling → Weld Seam Zinc Repair → Sizing and Straightening → Flying Saw Cut-to-Length → NDT (Non-Destructive Testing) / Hydrostatic Testing → Discharge Table → Inspection and Bundling

https://www.ztzgsteeltech.com/oil-gas-transportapi-pipe-production-line/

Machine Model	Production Pipe Diameter	Wall Thickness Range	Line Speed	High-Frequency Power	Typical Products
ERW25	Φ10–Φ32mm	0.6–2.0mm	20–100 m/min	100kW	Greenhouse pipes / Furniture pipes
ERW45	Φ16–Φ76mm	0.8–3.0mm	20–90 m/min	150kW	Greenhouse pipes / Guardrail pipes
ERW60	Φ32–Φ114mm	1.0–3.5mm	15–70 m/min	200kW	Scaffolding / Structural pipes
ERW80	Φ60–Φ219mm	1.2–4.0mm	10–50 m/min	250–400kW	Large-diameter structural round pipes

https://www.ztzgsteeltech.com/galvanized-tube-mill-pipe-making-machine/

Key Differences: Pre-Galvanized Strip Pipe Production Line vs. Standard Black Steel Pipe Production Line

Roll Surface Protection In a pre-galvanized line, guide rolls and support rollers are coated with polyurethane; in contrast, standard black steel pipe lines use metal rollers.

Forming Process The forming deformation is gentler to minimize peeling or cracking of the zinc layer.

Narrow Welding Process Window High-frequency power, line speed, and squeeze pressure must be precisely matched to avoid burning zinc coating.

Weld Seam Zinc Repair A zinc-repair unit is essential for this process, whereas it is not required for black steel pipe production.

Cooling System Rapid cooling after welding is necessary to minimize the heat-affected zone (HAZ).

Oils/Emulsions Cooling and lubricating media must be selected to ensure they do not corrode the zinc layer.

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ERW TUBE MILL LINE
Model	Round pipe mm	Square pipe mm	Thickness mm	Working spead m/min
ERW20	Ф8-Ф20	6x6-15×15	0.3-1.5	120	Read More
ERW32	Ф10-Ф32	10×10-25×25	0.5-2.0	120	Read More
ERW50	Ф20-Ф50	15×15-40×40	0.8-3.0	120	Read More
ERW76	Ф32-Ф76	25×25-60×60	1.2-4.0	120	Read More
ERW89	Ф42-Ф89	35×35-70×70	1.5-4.5	110	Read More
ERW114	Ф48-Ф114	40×40-90×90	1.5-4.5	65	Read More
ERW140	Ф60-Ф140	50×50-110×110	2.0-5.0	60	Read More
ERW165	Ф76-Ф165	60×60-130×130	2.0-6.0	50	Read More
ERW219	Ф89-Ф219	70×70-170×170	2.0-8.0	50	Read More
ERW273	Ф114-Ф273	90×90-210×210	3.0-10.0	45	Read More
ERW325	Ф140-Ф325	110×110-250×250	4.0-12.7	40	Read More
ERW377	Ф165-Ф377	130×130-280×280	4.0-14.0	35	Read More
ERW406	Ф219-Ф406	170×170-330×330	6.0-16.0	30	Read More
ERW508	Ф273-Ф508	210×210-400×400	6.0-18.0	25	Read More
ERW660	Ф325-Ф660	250×250-500×500	6.0-20.0	20	Read More
ERW720	Ф355-Ф720	300×300-600×600	6.0-22.0	20	Read More

STAINLESS STEEL PIPE PRODUCTION LINE
Model	Round pipe mm	Square pipe mm	Thickness mm	Working speed m/min
SS25	Ф6-Ф25	5×5-20×20	0.2-0.8	10	Read More
SS32	Ф6-Ф32	5×5-25×25	0.2-1.0	10	Read More
SS51	Ф9-Ф51	7×7-40×40	0.2-1.5	10	Read More
SS64	Ф12-Ф64	10×10-50×50	0.3-2.0	10	Read More
SS76	Ф25-Ф76	20×20-60×60	0.3-2.0	10	Read More
SS114	Ф38-Ф114	30×30-90×90	0.4-2.5	10	Read More
SS168	Ф76-Ф168	60×60-130×130	1.0-3.5	10	Read More
SS219	Ф114-Ф219	90×90-170×170	1.0-4.0	10	Read More
SS325	Ф219-Ф325	170×170-250×250	2.0-8.0	3	Read More
SS426	Ф219-Ф426	170×170-330×330	3.0-10.0	3	Read More
SS508	Ф273-Ф508	210×210-400×400	4.0-12.0	3	Read More
SS862	Ф508-Ф862	400×400-600×600	6.0-16.0	2	Read More