Nanjing Zhongqing Machine Making Co., Ltd.
Main products:pipe welding line,cold forming line,cut-to-length-slitting saw
Products
Contact Us
  • Contact Person : Mr. Yu Bing
  • Company Name : Nanjing Zhongqing Machine Making Co., Ltd.
  • Tel : 86-25-84497725-13305193900
  • Fax : 86-25-84591061
  • Address : Jiangsu,Nanjing,No. 532-1,Zhongshan East Road,Baixia District, Nanjing
  • Country/Region : China
  • Zip : 210016

273 ERW API Carbon Steel Pipe Making Line/Tube Mill

273 ERW API Carbon Steel Pipe Making Line/Tube Mill
Product Detailed
It produces steel pipes that used for oil pipe, gas pipe and energy pipe.

273 ERW Pipe Line:

Forming and sizing units uses combination of FF forming and FFX forming to produce steel pipes through HF induction welding. Heating method uses HF induction or contact welding, i.e. steel pipe fed into the mill is formed into pipe profile by forming rolls. With skin effect and proximity effect of high frequency current, induced electricity is concentrated onto the bonding surface of the pipe profile fringe to heat it up quickly to welding temperature, and finishes pressure welding when pipe fringes squeezed together by squeezing roll. After normalizing, cooling, sizing and primary straightening, steel pipe of desired size is produced.

 

 

Designing guideline:

 

To improve the serviceability and productivityTo meet safety requirements of multi-product small-batch productionTo improve the environment and safety in operation To improve the stability of the product quality To improve the yield of the lineTo reduce cost of the equipment

 

Advantage of the line:

More shared rolls, easy adjustment, high quality weld seam, sturdy machine frame, easy operation and maintenance.

 

 

 

API model mainly produces high level steel pipes, such as delivery pipe of petroleum and natural gas, oil well casing and so on. The requirements for material and quality are very strict. The mill is equipped with section equipment and technological equipment, such as IF annealing, air-cooled roll table, ultrasonic inspection, high pressure hydraulic pressure testing machine and so on.

 

273 Main Technical Parameters:

Mill speed: 20~60m/min;

If 600kW solid state high frequency welder (China make) is used, estimated speed of the line can be:

 

Outer Diameter

Thickness

Rectangular Pipe

Square Pipe

4.0

5.0

6.0

7.0

8.0

10.0

12.5

100×60

80×80

65

50

45

--

--

--

--

120×60

90×90

62

48

43

--

--

--

--

120×80

100×100

60

45

40

38

--

--

--

160×80

120×120

55

45

40

35

33

26

--

180×100

140×140

50

45

38

32

30

25

20

200×100

150×150

45

42

35

32

30

25

20

200×120

160×160

45

42

35

32

30

25

20

180×180

40

38

32

30

28

22

20

200×200

38

35

32

30

28

22

20

 

 Forming method: FF forming

Output capacity: 100,000t/per year

273 ERW API Carbon Steel Pipe Making Line/Tube Mill



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