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supreme pipes

supreme pipes
supreme pipes
Product Code : 05
Brand Name : supreme
Product Description

Check the wall Alignment and Gap

The alignment of the two parts should be checked at the same time. A possible misalignment on the outside must not exceed 10% of the thickness of the wall (Fig 5). If this limit is exceeded, a better clamping position is to be sought by rotating the pipe. In such a case, however the surface must be pre-planned important- The welding surfaces must be planed immediately prior to the jointing.

Butt-Welding Procedure

Once it has attained the fusion temperature, position the heating element in the butt welding machine. Press the parts to be jointed against the heating element with the force required for equalization until the entire circumference of each the jointing places results completely against it and a bead has formed. Reduce the equalization pressure almost to 0. The heating time listed in the table below is measured from this moment.

Leave parts in the butt-welding jointing machine, at welding pressure until the end of the cooling period. Once the heating period has elapsed, remove the parts from heating element, which should then be removed with out touching the jointing surfaces and push the parts together immediately. The change over time must not exceed the value listed in the table. Pay particular attention during jointing that the parts be moved together swiftly until the surface are about to touch. There they should be moved together so that they are in contact along the entire circumference. Need, the pressure should be increased rapidly to the present jointing with in the period of time specified in the table below. This pressure must be necessary, especially shortly after the jointing pressure has been attained. (Fig 6). The jointing parts must stay in the welding machine under jointing pressure until the end of the cooling period specified in the table.

Welding Bead checks

A bead should form around the entire circumference of the pipe, jointing o two-lip point should be above the pipe circumference moulds always being possible.. (Fig 7)

Recommended values for the heated tool butt-welding of pipes and fittings.

Wall thickness(mm)

Height of bead (mm)

Heating time (sec)

Changeover time max. (sec)

Time to reach full jointing (sec)

Cooling time under jointing pressure (min)

Up to 4.5

0.5

45

5

5

6

4.5-7

1.0

45-70

5-6

5-6

6-10

7-12

1.5

70-120

6-8

6-8

10-16

12-19

2.0

120-190

8-10

8-11

16-24

19-26

2.5

190-200

10-12

11-14

24-32

26-37

3.0

250-370

12-16

14-19

32-45

37-50

3.5

370-500

16-20

19-25

45-60

50-70

4.0

500-700

20-25

25-35

60-80


JAINCO PIPES PVT. LTD.

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