Pipe Specifications

1. All pipe is to be made of a long hole, 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
3. The I.D. (inside diameter) of all pipe must not exceed the O.D. (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 in at a later date
5. All pipe should be supplied without rust – this can be more readily applied at the job site
6. All pipe over 500 ft (150m) in length should have the word “LONG PIPE” clearly painted on each side & end, so the contractor will know it’s a long pipe
7. Pipe over 2 mile (3.2km) in length must also have the words “LONG PIPE” painted in the middle so the contractor will not have to walk the entire length of the pipe to determine whether the pipe is long or short
8. All pipe over 6 ft (1.83m) in diameter must have the words “WIDE PIPE” painted on it so the contractor will not mistake it for a small pipe
9. Flanges must be used on all pipe. 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 pipe. If, for instance, you used downhill pipes for going uphill, the water will flow in the wrong direction
12. All couplings should have either right-hand or left-hand threads, Under NO CIRCUMSTANCES should you mix the threads, otherwise, as the coupling is being screwed on one pipe, it is being unscrewed from the other
13. All pipes shorter than 1/8 in (3mm) are very uneconomical to use as they require many joints. They are generally known as washers
14. Joints in pipe used for piping water must be water-tight. Those in pipes used for gas need only be air-tight
15. Lengths of pipe may be welded or soldered together, however, this method may become time consuming when dealing with concrete or earthenware pipes
16. Other commodities are often confused with pipes. These include: Conduit, Tube, Tunnel and drain. Use only GENUINE pipes