home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
ARM Club 1
/
ARM_CLUB_CD.iso
/
contents
/
sillies
/
silly8
/
P
/
PipeSpecs
< prev
next >
Wrap
Text File
|
1994-03-04
|
3KB
|
50 lines
Subject : JOHN SMITH CRANES. PIPE SPECIFICATION.
1. All pipe is to be made from long holes, surrounded by metal or
plastic, centred around the hole.
2. All pipe is to be hollow throughout the entire length - do not
use holes of different length than the pipe. Do not use pipes
that are not hollow.
3. The Inside Diameter of all pipes must not exceed the Outside
Diameter - otherwise the hole will be on the outside.
4. All pipe is to be supplied with nothing in the hole, so that
water, steam or other stuff can be put inside at a later date.
5. All pipe is normally supplied without rust; this can be more
readily applied at the job site.
NB:Some vendors now supply pre-rusted pipes. If available in
your area, this product is recommended, as it will save a
great deal of time at the job site.
6. All pipes over 500ft (150m) in length should have the words
"LONG PIPE" clearly painted on each side and end, so the
storeman will know it's a long pipe.
7. Pipes over 2 miles (3.2km) in length must also have the words
"LONG PIPE" painted in the middle, so the storeman will not
have to walk the entire length of the pipe to determine
whether it is a long or a short pipe.
8. All pipes over 6ft (1.83m) in diameter must have the words
"LARGE PIPE" painted on it, so the storeman will not mistake
it for a small pipe.
9. Flanges must be used on all pipes. Flanges must have holes for
bolts, quite separate from the big hole in the middle.
10. When ordering 90 degree or 30 degree elbows, be sure to
specify left-hand or right-hand, otherwise you will end up
going the wrong way.
11. Be sure to specify to your vendor whether you want level,
uphill or downhill pipes. If you use downhill pipes for going
uphill, the water will flow the wrong way.
12. All couplings should have either right-hand or left-hand
threads, but not both on the same coupling. Do not mix the
threads, otherwise, as the coupling is being screwed on one
pipe, it is being unscrewed from the other. This upsets the
fitter at the other end of the pipe.
13. All pipes shorter than 1/8in (3mm) are very uneconomical in
use, requiring many joints, generally known as washers.
14. Joints in pipes for water must be water-tight. Those in pipes
for compressed air, however, need only be air-tight.
15. Lengths of pipes may be welded together or soldered together.
NB. Not recommended for concrete or earthenware pipes.
16. Other commodities often confused with pipes include: Conduit,
Tubes, Tunnels and Drains. Use only genuine pipes.
17. Foreign fitters often use pipes in unusual ways. Ways
which are not approved of in British engineering circles.