Plastics welding personnel — Qualification testing of welders — Thermoplastics welded assemblies

Type of product:

Pipe Socket Saddle

Dimensions :

d_n= mm d_n= mm d_n= mm

d_n= mm

SDR SDR SDR

Sub-group

2.6

3.9

3.10

4.4

1

Welding of test pieces

- base material (type, conditions)

- preparation of weld area on pipe

- ovality

- alignment

- equipment (conditions)

- choice and control of weld parameters

- welding record

Evaluation

2

Visual examination:

Evaluation

3

Peel test

Evaluation

Result

Sub-group

2.7

3.6

3.7

3.8

1

Welding of test pieces

- base material (type, conditions)

- preparation of weld area on pipe

- ovality

- alignment

- equipment (conditions)

- choice and control of weld parameters

- welding record

Evaluation

2

Visual examination:

Evaluation

3

Peel test

-

Evaluation

Result

Sub-group

6.1

to

6.4

7.1

to

7.5

8.1

to

8.4

1

Welding of test pieces

- Seam preparation:

cleaning, drying, mechanical treatment bevelling of top edges

- Welding material: weldability, pretreatment

- Equipment:

setting, control measurement, handling

- Test weld:

seam assessment, peeling test

- welding record

Evaluation

2

Visual examination of the test pieces, seam dimensions

- Seam profile:

shape and uniformity, defects, centricity, surface

- Beading:

at front seam edge, lateral flow

- Notching and scoring

- Seam dimensions requirements as per Rating sheet

Evaluation

3

Seam strength

- Peel test: requirements as per Rating sheet

Evaluation

Overall result