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  1. #11
    Join Date
    Jan 2004
    Location
    Bricks & mortar: Italy. Boat: Aegean
    Posts
    10,515

    Default Re: Hose tail reducing

    ...while hose is generally specified by ID. Or denier
    All epigrams are false

  2. #12
    Join Date
    Oct 2012
    Location
    Southminster, essex
    Posts
    9,611

    Default Re: Hose tail reducing

    Quote Originally Posted by rszemeti View Post
    That is slightly confusing ... because Tube probably does not mean what you think it means. Tube describes metal (usually) round sections that are NOT designed to carry fluids/pressure ... ie they are structural components, 50mm structural tube is 50mm OD.

    50mm Pipe is a metal, plastic or rubber tube that IS designed to carry fluids/pressure ... some products can be sold as both! ... lengths of 30mm 5mm wall steel pipe could be sold as 40mm steel tube ...

    So where does a cardboard roll come in the grand scheme of things & what is that rubber thing inside the tyre on my bicycle?

    (& will the front fall off?)
    Last edited by Daydream believer; 05-12-19 at 07:27.
    It is all down to the fact that my wife does not understand me !!

  3. #13
    Join Date
    Nov 2013
    Location
    Perth WA
    Posts
    2,438

    Default Re: Hose tail reducing

    Quote Originally Posted by rszemeti View Post
    That is slightly confusing ... because Tube probably does not mean what you think it means. Tube describes metal (usually) round sections that are NOT designed to carry fluids/pressure ... ie they are structural components, 50mm structural tube is 50mm OD.

    50mm Pipe is a metal, plastic or rubber tube that IS designed to carry fluids/pressure ... some products can be sold as both! ... lengths of 30mm 5mm wall steel pipe could be sold as 40mm steel tube ...
    Where did you get those definitions from? Can you quote your source please?

    Screenshot_2019-12-05 tube pressure rating calculator - Google Search.png

  4. #14
    Join Date
    Nov 2001
    Location
    Me: Johannesburg South Africa Yacht: Richards Bay East Coast Africa
    Posts
    7,347

    Default Re: Hose tail reducing

    Tube and pipe tend to both be used for hollow metal sections.

    Thin wall welded (tube) both round and rectangular tend to be structural in use but can carry liquids and gas. This is measured by o/d and wall thickness

    Thick wall tube of schedule tube was solid drawn but now I have seem schedule tube firmed and welded.

    This was referred as gas tube as it was used for town gas supply lines.

    Our water supply is mostly galvanized schedule 40 steel pipe. these days plastic pipe would be used.

    schedule pipe is always specified as nominal bore and schedule fro 10 to 120 or 160.

    The o/d is always the same as the outside is threaded BSP and the BSP is also specified by nominal bore.
    Last edited by Rogershaw; 05-12-19 at 09:21.
    Life is too short not to have a sea view
    Distantshaws tinyurl.com/yclt6l68

  5. #15
    Join Date
    Nov 2013
    Location
    Perth WA
    Posts
    2,438

    Default Re: Hose tail reducing

    Roger

    I've given up using measurements. When I want a fitting to screw into (say) a pump I take the pump with me and go through their racks until I find one that fits.

  6. #16
    Join Date
    Jul 2018
    Location
    Bewdley, Worcs
    Posts
    597

    Default Re: Hose tail reducing

    Quote Originally Posted by coopec View Post
    Where did you get those definitions from? Can you quote your source please?
    https://www.commercemetals.com/tube-...plain-english/

  7. #17
    Join Date
    Nov 2001
    Location
    Me: Johannesburg South Africa Yacht: Richards Bay East Coast Africa
    Posts
    7,347

    Default Re: Hose tail reducing

    Quote Originally Posted by coopec View Post
    Roger

    I've given up using measurements. When I want a fitting to screw into (say) a pump I take the pump with me and go through their racks until I find one that fits.
    I don't blame you especially when you consider that any any equipment that comes from the US will have NPT threads where the diameters are the same but the thread pitches are different.

    Some one will tell me that some sizes NPT and BSP pitch is the same.

    The other think about sizes of tube is the even through the dimensions are in milimeters the size id still the original imperial size.

    32 mm o/d tube = 1 1/4"
    38 mm o/d tube = 1 1/2"
    50mm is in fact 50.8 = 2 "

    Used to work for a tube makers and tube bending machine makers in the UK.
    Life is too short not to have a sea view
    Distantshaws tinyurl.com/yclt6l68

  8. #18
    Join Date
    Nov 2001
    Location
    Me: Johannesburg South Africa Yacht: Richards Bay East Coast Africa
    Posts
    7,347

    Default Re: Hose tail reducing

    Well that website is from the US and titled " Tube vs Pipe - The Differences Explained in Plain English"

    We all know the Americans don't speak English but speak American "english"
    Life is too short not to have a sea view
    Distantshaws tinyurl.com/yclt6l68

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