:: TERRAIN SDP :: tuberias pb y pvc

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PVC-U

4. The pipe and the piece will be kept in the furnaces for the time stated for each diameter, indicated as the heating time in table 1. That time is counted once the pipe and piece have been put fully into the furnaces.

TABLE 1 WELDING PARAMETERS

PIPE DIAMETER (mm) N.D.	PIPE WALL THICKNESS T (mm)	WELD LENGTH L (mm)	HEATING TIME (Seconds)	HOLD TIME (Seconds)	COOLING TIME (Seconds)
16	2,2	15	5	15	2
20	2,3	15	6	15	2
25	2,3	18	6	15	2
32	2,9	20	10	20	4
40	3,7	22	14	20	4
50	4,6	25	18	30	4
63	5,8	28	22	30	6

Immediately after extracting the pipe and piece from the furnaces, simultaneously proceed to join them. On fitting that joint, do not twist at all. The fitting will be axial and only allowing a small final flexion to achieve better alignment

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PIPE DIAMETER (mm) N.D.	PIPE WALL THICKNESS T (mm)	WELD LENGTH L (mm)	HEATING TIME (Seconds)	HOLD TIME (Seconds)	COOLING TIME (Seconds)
16	2,2	15	5	15	2
20	2,3	15	6	15	2
25	2,3	18	6	15	2
32	2,9	20	10	20	4
40	3,7	22	14	20	4
50	4,6	25	18	30	4
63	5,8	28	22	30	6

PIPE DIAMETER (mm) N.D.	PIPE WALL THICKNESS T (mm)	WELD LENGTH L (mm)	HEATING TIME (Seconds)	HOLD TIME (Seconds)	COOLING TIME (Seconds)
16	2,2	15	5	15	2
20	2,3	15	6	15	2
25	2,3	18	6	15	2
32	2,9	20	10	20	4
40	3,7	22	14	20	4
50	4,6	25	18	30	4
63	5,8	28	22	30	6

PIPE DIAMETER (mm) N.D.	PIPE WALL THICKNESS T (mm)	WELD LENGTH L (mm)	HEATING TIME (Seconds)	HOLD TIME (Seconds)	COOLING TIME (Seconds)
16	2,2	15	5	15	2
20	2,3	15	6	15	2
25	2,3	18	6	15	2
32	2,9	20	10	20	4
40	3,7	22	14	20	4
50	4,6	25	18	30	4
63	5,8	28	22	30	6