Name: High-Frequency Welded Pipe Mill Line
Brand: ZHEJIANG JINGGONG INTELLIGENT BUILDING MATERIAL EQUIPMENT CO., LTD.

ZG50 High-Frequency Welded Pipe Mill Line is designed to produce welded pipes of Ф19～63.5mm in diameter and 0.8～2.5mm in wall thickness as well as square and rectangular pipes and deformed pipes of the corresponding size. Adopting roll pass design, the tube mill production line can manufacture welded steel pipes with good quality machining and high precision assembling.

Tube mill technological process: Raw material (steel coil)→uncoiling→shearing and butt-welding→material accumulating→non-power leveling→mill-forming→highfrequency welding→removing burrs outside of weld seam→cooling→sizing→roughly straightening→fixed length cutting→run-out table

Produce capacity

No.	Item		Working range
1	Round	Diameter	Φ19~63.5mm
		Thickness	0.8~2.5mm
2	Square	Diameter	1515~5050mm
		Thickness	0.8~2.0mm
3	Milling speed		30~100m/min
4	Cutting length		4~8m

Steel strips specification

No.	Item	Working range
1	Thickness of strips	0.8~2.5mm
2	Width of strips	60~200mm
3	External diameter of strips	Φ800~1500mm
4	Internal diameter of strips	Φ450~550mm
5	Weight of strips	≤2000KGS
6	Raw material	Q195,Q235,G.I

Working Process Layout Of ZG50 High-Frequency Welded Pipe Mill Line

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Double-side pneumatic uncoiler

Structure type: Double-side 180° rotary expanding tightly, which ensure steel coil feeding alternatively and make steel strip going into accumulator freely.

External diameter of strips	Φ800~1500mm
Internal diameter of strips	Φ450~550mm
Width of strips	60~200mm
Thickness of strips	0.8~2.5mm
Weight of strips	≤2000KGS
Expansion type	Pneumatic(AIRTAC Brand cylinder)
Brake type	Disk Brake

Semi-automatic pneumatic shear and butt-weld

Shearing & Welding Machine is used to cut the irregular ends of the strips and then connect the strips by welding.

1. Width of strips	60~200mm
2. Thickness of strips	0.8~2.5mm
3. Cutting type	Pneumatic shear
4. Welding type	TIG

Horizontal accumulator

1. Diameterof horizontal accumulator	Φ4000mm
2. Storage capability	1000m
3. Feeding speed	160m/min
4. Rotation motor	AC 18.5KW(Siemens beide Brand)
5. Feeding motor	AC 11KW(Siemens beide Brand)
6. Reducer	GUOMAO Brand
7. Controller	ABB Brand
8. Air cylinder for feeding device	AIRTAC Brand

Forming and sizing machine

Forming part
1. Quantity of vertical stands	7 stands
2. Quantity of horizontal stands	7 stands
3. Quantity of gearbox	7 stands
4. Guide device	Turkish-heads type
5. Squeeze roll	2 squeeze roll
6. Scraper device	Adjusting pole and quickly feeding and exit
7. Ironing device	One vertical stand

Sizing part
1. Quantity of vertical stands	6 stands
2. Quantity of horizontal stands	6 stands
3. Quantity of gearbox	6 stands
4. Speed measure device	1 set
5. Quantity of straightening stands	2 stands

Computer cutting saw

Cutting online as customer setting length

Structure	Parameter
1. The diameter of Round pipe	Φ19~63.5mm
2. Range of thickness	0.8~2.5mm
3. Cutting length and precision	L=4～8m,≤±3mm
4. Electric control system	Motion controller
5. Size of saw blade	Φ500mm
6. Material of saw blade	65Mn
7. Driving motor	AC 18.5KW (Siemens beide Brand)
8. Cutting motor	AC 15KW (Siemens beide Brand)
10. Speed of cutting	Max: 100m/min
11. Clamping	1SET
12. Clamping method	Pneumatic clamping

Double side run-out table

Welded frame structure equipped with sizing signal system

1.Structure	Double-side run-out
2.The length of table	9M
3.Knick out type	Pneumatic
4.Motor	Siemens beide Brand

200KW High frequency welding machine

Overall control table

Cooling system

Rectifier cabinet

Inverter cabinet

DC speed adjustor(PARKER Brand)

Zinc spray Electric Arc Spray Principle

Principle：Two metal wires form consumable electrodes. The electric arc burning at the ends of the wires melts the wires which are evenly fed in. The melted material is then atomized into fine micro particles and sprayed evenly to the surface of the workpiece by compressed air to form a layer of protecting coat.

Connected to the positive and negative terminals respectively, the two wires which intersect at certain angle (normally 30°～60°) are fed in continuously. The two contacted wire end terminals will generate electric arc and keep burning steadily under power. The melted wires are atomized by high speed compressed air flow and sprayed onto the pre-treated workpiece surface.

Roller

Customer should buy the roller additional, different size of pipe need different size of roller. Calculate the price as final weight

Material: Cr12, Hardness: 58-62 degree

Material of squeeze roller: H13, Hardness: 50-55 degree