Products

Tube Welding Line

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HF Round,Rectangle, Square

The ERW (Electric Resistance Welding) pipe mill is a series of machines that builds longitudinal weld seam pipe with steel strips of certain width. It starts by uncoil and flatten the slit steel coils into steel strips. The flattened steel strips will be inserted into the forming machine and the rollers in the machine will bend the strip to a round pipe shape. The round pipe will then be sent into the weld box where the tube is welded by a high frequency or solid state welder. The welded pipe will be formed to expected shape (round/ square/ rectangle etc) or size in a sizing machine. Finally the pipe will be cut to length and bundled.

 

Process Flow
Slit coil --- Un-coiler --- Shearing and butter welder --- Storage/ accumulator --- Forming --- Welding --- Cooling --- Sizing --- Cutting saw --- Run out table --- Finishing --- Pipe collecting and packaging

 


 

Machine Configurations

(1)   Un-coiler
(2)   Shear and Butt Welder
(3)   Vertical/ Horizontal Accumulator
(4)   Forming, Welding and Sizing mill
    A) Feeding & leveling device
    B) Forming machine
    C) Guiding, extruding, welding & scraping device
    D) One set of cooling water tank
    E) Sizing mill
    F) Main driving system
(5)   Computer-controlled Tracking Cutting Saw (Circular Saw Cutting)
(6)   Finished Pipe Passing Conveyor (Run out table)
(7)   HF Electric
(8)   Pneumatic System
(9)   Hydraulic System
(10)  Electrical System with PLC Control and DC Drive Control System

 

Model

Diameter of Welded Tubes

Wall Thickness of Round Tube

Max. Size of Square Tube

Max. Size of Rec. Tube

Wall Thickness of Sq & Rec Tube

Speed of Tube Welding

High Frequency Power

RT16

8-25mm

0.3-1.0mm

20x20mm

12.7x25.4mm

0.3-0.8mm

30-110m/min

100KW

RT25

8-32mm

0.4-1.3mm

25x25mm

20x30mm

0.4-1.0mm

30-110m/min

100KW

RT25

High speed

8-32mm

0.4-1.3mm

25x25mm

20x30mm

0.4-1.0mm

30-130m/min

150KW

RT32

10-40mm

0.5-1.8mm

30x30mm

20x40mm

0.5-1.4mm

30-100m/min

150KW

RT32

High speed

13-40mm

0.5-1.8mm

30x30mm

20x40mm

0.5-1.4mm

30-130m/min

150KW



 

Model

Diameter of Welded Tubes

Wall Thickness of Round Tube

Max. Size of Square Tube

Max. Size of Rec. Tube

Wall Thickness of Sq & Rec Tube

Speed of Tube Welding

High Frequency Power

RT45

13-50.8mm

0.6-2.3mm

40x40mm

30x50mm

0.6-1.7mm

30-100m/min

150KW

RT45

High speed

13-50.8mm

0.6-2.0mm

40x40mm

30x50mm

0.6-1.5mm

30-130m/min

150KW

RT50

19-63.5mm

0.7-2.75mm

50x50mm

40x60mm

0.7-2.2mm

30-100m/min

200KW

RT50

High Speed

19-63.5mm

0.7-2.5mm

50x50mm

40x60mm

0.7-2.0mm

30-130m/min

200KW

RT50 to 76

19-76mm

0.7-2.75mm

60x60mm

40x80mm

0.7-2.2mm

30-100m/min

200KW

RT50 to 76 High speed

19-76mm

0.7-2. 5mm

60x60mm

40x80mm

0.7-2.0mm

30-130m/min

200KW

RT60

19-63.5mm

0.8-3.5mm

50x50mm

40x60mm

0.8-2.7mm

30-90m/min

250KW

RT60

High speed

19-63.5mm

0.8-3.0mm

50x50mm

40x60mm

0.8-2.5mm

30-120m/min

300KW

RT60 to 76

19-76mm

0.8-3.5mm

60x60mm

40x80mm

0.8-2.7mm

30-90m/min

250KW

RT60 to 76 High speed

19-76mm

1.0-3.0mm

60x60mm

40x80mm

0.8-2.5mm

30-120m/min

300KW

RT60

to 100

22-100mm

1.0-3.0mm

76.2x76.2mm

50.8x101.6mm

1.0-2.5mm

30-80m/min

250KW




 

Model

Diameter of Welded Tubes

Wall Thickness of Round Tube

Max. Size of Square Tube

Max. Size of Rec. Tube

Wall Thickness of Sq & Rec Tube

Speed of Tube Welding

High Frequency Power

RT76

25-90mm

1.0-4.0mm

70x70mm

60x80mm

1.0-3.2mm

30-70m/min

300KW

RT76

High speed

25-90mm

1.0-4.0mm

70x70mm

60x80mm

1.0-3.2mm

30-100m/min

400KW

RT76 to 127

32-127mm

1.2-4.0mm

100x100mm

80x120mm

1.2-3.0mm

30-70m/min

300KW

RT90

32-127mm

1.5-4.5mm

100x100mm

80x120mm

1.5-3.5mm

20-60m/min

400KW

RT90 to 140

32-140mm

1.5-4.5mm

110x110mm

100x120mm

1.5-3.5mm

20-60m/min

400KW

RT115

48-127mm

1.5-5.0mm

100x100mm

80x120mm

1.5-4.0mm

20-60m/min

400KW

RT115

to 140

48-140mm

1.5-5.0mm

110x110mm

100x120mm

1.5-4.0mm

20-60m/min

400KW

RT115

to 165

48-165mm

1.8-5.0mm

130x130mm

120x140mm

1.8-4.0mm

20-60m/min

400KW



 

Model

Diameter of Welded Tubes

Wall Thickness of Round Tube

Max. Size of Square Tube

Max. Size of Rec. Tube

Wall Thickness of Sq & Rec Tube

Speed of Tube Welding

High Frequency Power

RT165

50.8-165mm

2.0-6.0mm

130x130mm

120x140mm

2.0-5.0mm

15-50m/min

500KW

RT165

to 219

76-219mm

2.0-6.0mm

170x170mm

140x200mm

2.0-5.0mm

15-45m/min

500KW

RT219

89-219mm

2.5-8.0mm

170x170mm

140x200mm

2.5-6.0mm

12-35/min

600KW

RT273

102-273mm

2.5-10.0mm

210x210mm

180x240mm

2.5-8.0mm

10-30m/min

800KW

RT355

219-355mm

4.0-12.0mm

280x280mm

260x300mm

4.0-10.0mm

10-30m/min

1200KW


 

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