| Pipe Storage
Assembly of Push-On Joint
Assembly of Locked-On Joint System
Pipe Laying Equipments
Polyethylene Sleeving
Cement Lining Repair
|
Pipes must be cut on
site as infrequently as possible by using disc-type cutter. Such
operations, which require particular care, must be carried out without
fail in a plane perpendicular to the pipe axis.
After cutting the pipe, it is necessary:
- To restore the chamfer at the spigot end of
the cut faces of pipe.
- To execute the weld on site (if locked
joint).
- To repair the pipe coating and cement lining
if damaged.
Chamfer Restoration
- After cutting, complete deburring is
recommended. It is essential to restore the chamfer on the cut faces
of Standard pipes so as to facilitate the assembly of the push-on
joint and to prevent any damage to the elastomer (rubber) gasket,
which can result in a leaking joint. The geometry of this chamfer
must be in accordance with the dimensions below.
| Nominal Diameter |
OD |
m |
n |
| DN |
(mm) |
(mm) |
(mm) |
| 80 |
98 |
9 |
3 |
| 100 |
118 |
9 |
3 |
| 150 |
170 |
9 |
3 |
| 200 |
222 |
9 |
3 |
| 250 |
274 |
9 |
3 |
| 300 |
326 |
9 |
3 |
| 350 |
378 |
9 |
3 |
| 400 |
429 |
9 |
3 |
| 500 |
532 |
9 |
3 |
| 600 |
635 |
9 |
3 |
Execution of the Weld Bead (For making
restrained joints)
Equipment necessary
- Electric welding set of 130 A minimum
with welders accessories (mask gloves, wire brush, scaling hammer,
etc.) "Nickel-iron electrode (approx. 55% nickel).
- supplied by SADIP on Request
- - One copper guide ring per DN.
- Electric pnuematic grinding machine with
accessories.
Using copper ring, mark the position of the
weld bead on the end of the barrel. Carefully grind an area at least 25
min wide at the point where the weld bead will be deposited. |
