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piped

A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids. It can also be used for structural applications; hollow pipe is far stiffer per unit weight than solid members.
In common usage the words pipe and tube are usually interchangeable, but in industry and engineering, the terms are uniquely defined. Depending on the applicable standard to which it is manufactured, pipe is generally specified by a nominal diameter with a constant outside diameter (OD) and a schedule that defines the thickness. Tube is most often specified by the OD and wall thickness, but may be specified by any two of OD, inside diameter (ID), and wall thickness. Pipe is generally manufactured to one of several international and national industrial standards. While similar standards exist for specific industry application tubing, tube is often made to custom sizes and a broader range of diameters and tolerances. Many industrial and government standards exist for the production of pipe and tubing. The term "tube" is also commonly applied to non-cylindrical sections, i.e., square or rectangular tubing. In general, "pipe" is the more common term in most of the world, whereas "tube" is more widely used in the United States.
Both "pipe" and "tube" imply a level of rigidity and permanence, whereas a hose (or hosepipe) is usually portable and flexible. Pipe assemblies are almost always constructed with the use of fittings such as elbows, tees, and so on, while tube may be formed or bent into custom configurations. For materials that are inflexible, cannot be formed, or where construction is governed by codes or standards, tube assemblies are also constructed with the use of tube fittings.

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  1. Inverness

    How is a 2 zone heating system suppose to be piped

    Hi. A new house regulation for a 2 zone heating system because it's bigger that 150sqm. I'm I right in saying zone 1 should be all of the downstairs radiators and zone 2 all of the upstairs radiators ? I have thermostat room programmer down the stairs and another one upstairs. I think the two...
    • Inverness
    • Thread
    • central heating system forum heating heating system piped plumbing system zone
    • Replies: 10
    • Forum: Plumbing Zone
  2. Pickwickpick

    Any ideas why this would be piped this way?

    Been to do a quote today, one of the elements of the job involves tidying up the mess of pipes underneath the boiler. Its a regular/heat only boiler, with the hot water supplied communally. The pipework is a complete mess and for some reason the return pipework from the rads is connected to the...
  3. I

    TBOE radiators in new build incorrectly piped

    Hi everyone, I am seeking some advice. We moved in last year to a new build flat which has 6 TBOE radiators with TRV's at the top. The new build flat uses a heat exchange unit as it is connected to district heating system. All pipework is behind the plasterboards and run up in the ceiling. I...
  4. Darren Jackson

    Kitchen radiator piped up on 1/2" flexi's !

    Went to a new customers house yesterday to service there boiler. 6 month ago they had the kitchen remodelled and the existing radiator changed to a double. The kitchen guys hung the new rad and put 2 15mm x 1/2" flexi's on it telling them it's how you do it nowadays & makes it easy to lift off...
  5. D

    NEW Veissman vitodens 100 open vent problems

    Hi Everyone hoping someone has some bright ideas for me! just did an install removed an old ideal ff and replaced it with a veissman as above. first day of install yesterday, all piped ready to go, I tried to refill the system, blockage in the dreaded feed / vent tee, cut that out replaced...
  6. M

    20 rads

    Power flushed a one today, 20 rads, some are great, like the back of the house where its been re-piped, others on the old system not so great, warm, you can keep your hand on them, theirs 2 on the old system like that and the last one, the furthest one away is new, piped up in 8mm and again...
  7. T

    Can radiators be piped in series?

    I'm have 4 x 400mm wide radiators installed in a semi circle bay window. My builder has started to pipe them up in series with the outlet of the first radiator feeding straight into the inlet of the second and so on. I'm pretty sure that it won't work as the temperture drop across each rad (i'm...
  8. S

    Is my UFH piped in correctly? (With photo)

    Hi Guys, Quick question for you, I have just had my underfloor heating piped into the main circuit by a plumber. I have not used him before. My setup is a Sealed system, Convetional boiler, S plan plus with 3 zones. 2 heating/ 1 DHW. The UFH uses a an RWC combined thermomix valve/pump...
  9. gassafe

    Piped up wrong?

    Hey guys, I have a shower that is failing to get hot water to it... The pump sounds awful when starting up, almost like its running dry! The connection in the airing looks wrong to me the 15mm pipe in the pic goes up & then down onto the pump in 15mm... Isn't the vent supposed to come off the...
  10. T

    back boiler heating when oil is turned on..

    Hi, Hope someone can help.. I moved here about three weeks ago, the house has an open fire that heats the radiators and water, also has oil heating..A few days ago we noticed that when the oil is turned on the back boiler gets warm, and makes gurgling noises.. The first few days we used...
    • taylor2
    • Thread
    • back boiler boiler central heating system oil piped systems turned wrong
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
  11. P

    Underfloor piped heating for suspended wood floor

    I am having a dilemma at the moment as I want the whole ground floor of the house heated under floor. The extension we are having built will be tiled and have plumbed under floor heating installed but the rest of the ground floor is a suspended wooden floor, living room and hallway. My question...
  12. M

    Older style toilet piped system to pan??

    I have a WC I am doing for a client. As the soil pipe come up through floor I am unable to use any design of toilet without boxing behind cistern to make up difference to fit on to soil pipe. The existing toilet is piped to cistern (old style) So you can cut distance accordingly. My problem is...
    • mingualez
    • Thread
    • cistern decent merchants oil older pan piped style system toilet using
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  13. R

    unvented cylinder and stove question

    First of all id like to say hello im a newbe plumber from ni ok so my question is. If i have a unvented cylinder in a house, whats stopping me putting in a wood burning stove that heats water and changing the heating system back to a vented system? Would there be a problem with this i ve...
    • rightlad
    • Thread
    • cylinder piped question store stove system unvented unvented cylinder
    • Replies: 17
    • Forum: Plumbing Jobs | The Job-board
  14. B

    piped skirting

    Can anyone tell me what length of 15mm copper pipe would equate to a 7000btu rad? OR how much water is contained in a 7000btu rad? I've done the online calc's and for my room I need approx 7000btu rad. I don't want to hang rads and looked at thermaskirt which is damn expensive and fittings are...
  15. B

    grant baxi back boiler noise

    I have just moved into a house with a grant baxi back boiler in the coal fire and oil link up. approx 20 year old system I have tried 2 plumbers but am stuck. The problem is when i pull the damper on the back boiler to put the heat to the rads you can hear what sounds like air bubbling in the...
    • bigmaac antrim
    • Thread
    • back boiler baxi boiler boiler noise grant noise oil piped system
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  16. A

    Piped Services Design Briefs

    Hi guys, im currently at college doing a hnc in building services,the course has a piped services module.I kept the module because i was interested. Being a spark and not a domestic or commercial one im struggling with some aspects of my assignment as i dont even come into contact with any...
  17. C

    Boiler possibly piped up wrong???

    went to a job today , lady claim she never had hot water from the boiler since it was fitted (worcester system boiler and a tank) and that she always had to have the immersion switched on! its a worcester bosch system boiler, from the boiler workingleft to right there is a condensate pipe ...
  18. R

    Pumped ch gravity he to sealed system installation problem

    Right guys been and converted a system to sealed from ov today but can't get any heat at the rads we located the new boiler in the cupboard where the cylinder was used the 28 mm flow and return from the cylinder to connect to the heating flow and return at the back boiler but no heat at rads...
    • ryangas
    • Thread
    • boiler cylinder gravity installation piped problem pump pumped return sealed sealed system system valve
    • Replies: 34
    • Forum: Plumbing Jobs | The Job-board
  19. 0

    Central heating piped up wrong???

    Does this look right to you??? What should each pipe do/go to/from?? A 'plumber has surgested that my kitchen radiator that does not work may be piped incorrectly.
  20. D

    centre piped radiators

    Anyone have experience with centre piped radiators, with inlet/outlet in the centre of the rad at the bottom. Are they any harder to work with install. for new build so pipes will be positioned to suit http://muhr.net/uploads/media/AA_CLASSIC_M_EN.pdf
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