Test for valves and fittings:- As per requirement of
clause (e) of regulations
290.
| Kind of pipes
|
Butt welded
pipes |
|
Minimum
elongation per cent
|
Sulphur per
cent. max. |
Phosphorous
per cent max. |
| Ultimate tensile strength
in kg./sq. mm (tons per sq. in.) |
On 203 mm. (8 in.) |
On 51 mm. (2 in.) |
| Not less than |
Not more than |
6 mm. (1/4") thick
and over |
less than 6 mm. (1/4")
thick |
6mm. (1/4") thick
and over
|
Less than 6 mm. (1/4")
thick |
|
| Strips cut from the pipes
clear of the welds and tested in their curved condition |
35
(22) |
44
(28) |
20 |
18 |
32 |
30 |
0.6 |
0.6 |
| Test lengths taken from
finished pipes (ends of pipes to be plugged for
grips) |
35
(22) |
44
(28) |
25 |
23 |
- |
- |
