MANDRELS

The mandrels are components of pipe bending complex for bend oil-and-gas pipelines of 219 – 1420 mm diameters production by cold bending pipes.

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Technical characteristics

External pipes diameter, mm

Nominal bend pipe radius, mm

40 pipe's diameter

273

219

235

377

426

530

Bend pipe radius, min, m

Pipe wall thickness by min bending radius, mm

Overall dimensions

- length, mm

- height, mm

- width, mm

Mass, kg

External pipes diameter, mm

Nominal bend pipe radius, mm

Bend pipe radius, min, m

Pipe wall thickness by min bending radius, mm

Overall dimensions

- length, mm

- height, mm

- width, mm

Mass, kg

18

5

18

4

18

5

20

7

20

9

20

12

205

1 564

174

1 405

250

1 564

285

2 106

335

2 106

420

2 635

124

195

87

165

130

195

388

280

415

280

698

350

The mandrels using in GT532 pipe bending machine (D219-530)

External pipes diameter, mm

Nominal bend pipe radius, mm

Bend pipe radius, min, m

Pipe wall thickness by min bending radius, mm

Overall dimensions

- length, mm

- height, mm

- width, mm

Mass, kg

40 pipe's diameter

40 pipe's diameter

External pipes diameter, mm

Nominal bend pipe radius, mm

40 pipe's diameter

530

630

720

820

1 020

Bend pipe radius, min, m

Pipe wall thickness by min bending radius, mm

Overall dimensions

- length, mm

- height, mm

- width, mm

Mass, kg

External pipes diameter, mm

Nominal bend pipe radius, mm

Bend pipe radius, min, m

Pipe wall thickness by min bending radius, mm

Overall dimensions

- length, mm

- height, mm

- width, mm

Mass, kg

20

12

16

15

21

15

21

16

20

18

420

2 635

500

2 020

585

2020

655

2 020

910

3 750

698

350

1 340

525

1 530

635

1 650

735

3 440

810

The mandrels using in GT1022 pipe bending machine (D508-1020)

External pipes diameter, mm

Nominal bend pipe radius, mm

Bend pipe radius, min, m

Pipe wall thickness by min bending radius, mm

Overall dimensions

- length, mm

- height, mm

- width, mm

Mass, kg

40 pipe's diameter

40 pipe's diameter

External pipes diameter, mm

Nominal bend pipe radius, mm

1 220

1 420

Bend pipe radius, min, m

Pipe wall thickness by min bending radius, mm

Overall dimensions

- length, mm

- height, mm

- width, mm

Mass, kg

Наружный диаметр труб, мм

Номинальный радиус изогнутой трубы

Радиус изгиба трубы, min, м

Толщина стенки трубы при номинальном радиусе изгиба, мм

Габаритные размеры:

Длина, мм

Ширина, мм

Высота, мм

Масса, кг

26

15

25

15

1 078

3 886

1 284

4 000

6 500

976

7 910

1 220

The mandrels using in GT1424 pipe bending machine (D914-1420).

Наружный диаметр труб, мм

Номинальный радиус изогнутой трубы

Радиус изгиба трубы, min, м

Толщина стенки трубы при номинальном радиусе изгиба, мм

Габаритные размеры:

Длина, мм

Ширина, мм

Высота, мм

Масса, кг

40 диаметров трубы

40 pipe's diameter

Pipe wall thickness by min bending radius is determined by ability of a pipe bending machine.

Pipe wall thickness by min bending radius is determined by ability of a pipe bending machine.

Pipe wall thickness by min bending radius is determined by ability of a pipe bending machine.

Pipe wall thickness by min bending radius is determined by ability of a pipe bending machine.

Pipe wall thickness by min bending radius is determined by ability of a pipe bending machine.

The mandrels are components of pipe bending complex for bend oil-and-gas pipelines of 219 – 1420 mm diameters production by cold bending pipes. The mandrels use allows taking qualitative measures for maximum possible bend corners as per appropriate GOST and SNiP (Construction Regulation Standards Building Code). Also it allows making bend of insulation and spiral-seam pipes

The mandrels construction provides high rigid under loading. Active parts of mandrels, which come into contact with pipe, are coated with polyurethane. The pipe fixed in a pipe bending machine, and then mandrel moves inside in pipe by means of hydro cylinders and discompessed. Then pipe is bended.

When bending, the mandrels, at the expense of its construction, is in very closed contact with pipe, that gives even distribution of effort inside the pipe, which incipient during bending, and significantly reduce appearance of corrugates and remaining oval of elbow.

All operations of pipe bending complex are controlled from control panel of pipe bending machine unit.

The presented mandrels as compared with other mandrel types have the following advantages:

• high-quality polyurethane coating thickness of working part is increased 3-4 times. It in-creases 3 times of life time, excludes scaling and bursting polyurethane;
  
• mandrel stringers are made from high-quality laminated spring steel with special thermal treatment;
  
• profile of working elements fit to pipe profile exactly;
  
• wedge construction is more rigid and can redistribute of maximum bend effort strains. It is also more serviceable and maintainable;
  
• higher work resource of mandrels at the expense of increased work resource all parts as well as parts coupling as a whole;
  
• using support equipments allow to realize rigid and exact moving not only does the man-drel but so does pipe as required by unclasped mandrel in the pipe and feed. (The mandrel feed in the analogues is unstable due to device slipping. In a number of cases, the other type mandrels can't move at all, especially in open construction sites, due to local or total defects of site covering or weather conditions).
  

3, 3td Ptomyshlenny proezd, Kropotkin city, Krasnodar territory, Russia, 352387 (postal code)