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Butt welding fittings meet the following national and international product standards;
Production to other standards and customers individual specifications is possible by special agreement.
 
  • Seamless Butt-Welding Fittings
  • Seamless butt-welding fittings are produced from seamless tube and pipe by either hot or cold extrusion, forming, forging, machining, or by a combination of two or more of these operations.
    Seamless butt-welding fittings are available in standard size, as published in this catalogue, and in non-standard sizes. Standard sizes fittings are generally available ex stock.
    Non-standard size fittings are produced subject to certain minimum quantity limitations. Details are available on application.
  • Seam-Welded Butt-Welding Fittings
  • Seam-welded butt-welding fittings are produced from hot or cold rolled annealed and pickled sheet or plate, formed into half shells or segments and longitudinally seam-welded.
    Seam-welded butt-welding fittings are available in standard sizes, as published in this catalogue, and in non-standard sizes.
    Standard size fittings are generally available ex stock. Non-standard size fittings are produced subject to certain minimum quantity limitations. Details are available on application.
     
    Material Material Spec. Applied Spec.
    Al-Brass BS 2871 CZ110
    DIN17660(CuZn20Al2)
    ASTM B111 C68700
    JIS H3300 C6870
    BS1640
    DIN2608 DIN86090
    DIN2615 DIN86088
    DIN2616 DIN86089
    DIN28011
    ANSI B16.9
    ANSI B16.28
    Cu-Ni 90/10 BS 2871 CN102
    DIN17664(CuNi10Fe1Mn)
    ASTM B466, B467 C70600
    JIS H3300 C7060
    Cu-Ni 70/30 BS 2871 CN107
    DIN17664(CuNi30Mn1Fe)
    ASTM B466, B467 C71500
    JIS H3300 C7150
     
     
  • Welding
  • Welding is carried out by Code-Qualified personnel
    (ASME Boiler and Pressure Vessel Code)
    whose qualifications are regularly checked and approved.
    Established welding methods include pulsed TIG and shielded electrode techniques.
       
  • Supply Condition
  • Unless otherwise agreed, seamless butt-welding fittings are supplied. Heat-treatment scale is removed.
    Seam-welded butt-welding fittings are supplied in the as-welded condition.
     
  • End Preparation
  • Unless otherwise agreed, butt-welding fittings are
    supplied with plain ends, Cut square and deburred.
    Alternatively, fittings with a wall thickness of 2.0mm and above can be supplied with bevelled ends to ANSI B16.25.
    Other weld proparations, to standards laid down by approved specifying authorities, can be performed on application.
     
  • Inspection and Testing
  • Throughout the manufacturing process, from melting and alloying to the finished product, stringent quality control inspections and tests are carried out to ensure that product quality complies fully with customer requirements.
    All tests are performed in accordance with the requirements of the relevant specification.
  • Certification
  • All butt-welding fittings are supplied with a certificate listing the tests which have been performed in accordance with relevant specifications and / or customer requests.
     
  • Marking
  • All butt-welding fittings are marked with Alloy No, Heat No, Nominal Diameter, Degree and maker's trade mark.
    Additional information, e.g standard and alloy number, maximum pressure rating in bar, can be added on request.
     
  • Packing
  • The utmost care is taken to ensure that butt-welding fittings are fully protected against damage during transit.
     
     
     
    TTS supplies a full range of composite and solid
    weld neck, blind, slip-on flanges and others.
     
  • Materials
  • - AI-Brass : ASTM B111 C68700 Cast bronze : ASTM B61, B62,
      JIS H3300 C6870   JIS H5111 BC1 ~ BC7
      BS 2872 CZ110   BS 1400 LG₂C
           
    - Leaded yellow brass : ASTM B584 C85400 Steel : ASTM A105
      JIS H5101 YBSC₂   JIS G3101 SS400
           
    - Cu-Ni 90/10 : ASTM B151 C70600    
      JIS H3300 C7060    
      BS 2872 CN102    
     
  • Applicable Standards
  •   The national and international standards to which the flanges are produced are detailed in the relevant product tables.
     
  • Composite Flanges
  •   Composite weld-neck and composite slip-on flanges are made up from two components, an inner Flange(welding collar) in Al-Brass, Cu-Ni 90/10, Cu-Ni 70/30 and an outer flange in carbon steel.
    Composite blind flanges are made up from a carbon steel blind flange with a welded-on, and machined disc in Al-Brass, Cu-Ni 90/10 or Cu-Ni 70/30.
     
  • Solid Flanges
  •   Solid flanges in Al-brass, Leaded yellow brass, Cu-Ni 90/10 or Cu-Ni 70/30 are produced from bar by hot forging and machining, solid flanges in bronze are produced by casting and machining.
     
  • Solid Silver-Brazing Flanges
  •   Solid silver brazing flanges incorporate integral silver-brazing alloy rings and under normal circumstances there is generally no need to socket feed with additional brazing alloy. The silver brazing alloy to AWS A5, 8-BAG1, BAG7, JIS E3261 BAG1, BAG7 or BS1845 AG1, AG7.
     
  • Product Range
  •   Composite and solid flanges are available in standard sizes machining those of the relevant pipe and butt welding fittings.
    Non-standard size flanges are produced to certain minimum quantity limitations, availability on application.
     
  • Inspection and Testing
  •   A Series of stringent quality-control inspections and tests is performed throughout the entire manufacturing process, from melting and alloying to the finished product to ensure product quality which complies with the customer's requirements. Final inspection generally includes visual and dimensional control as well as chemical and mechanical tests to ensure chemical, physical and dimensional accuracy.
     
     
  • Applicable Standard
  •   The various national and international standards to which silver-brazing and threaded fittings are produced are detailed in the relevant product tables.

  • Types
  •   Silver-brazing and threaded fittings are produced by hot forging and supplied with machined surfaces. Silver-brazing and threaded fittings are available in standard sizes to be used with tubes having the following outside diameter; 16, 20, 25, 30, 38, 44.5 and 57㎜

  • Silver-Brazing Alloy Rings
  •   All fittings incorporate integral silver brazing alloy rings and under normal circumstances there is generally no need to end feed with additional brazing alloy.
    The silver-brazing alloy to AWS A5.8-76, BAG1 BAG7, BAG14.
    (JIS E3261 BAG1, BAG7 or BS1845 AG1, AG7)

  • Threads
  •   Threaded fittings are supplied with threads according to NPT, API, BSP and DIN259 when other standards are requested, the total length of the fitting may very slightly.
     
     
  • Materials
  •   - Aluminium Brass : ASTM B111 C68700
        BS 2872 CZ110
        JIS H3300 C6870, C6871, C6872
         
      - CuNi 90/10, 70/30 : ASTM B151 C70600, C71500
        BS 2872 CN102, CN107
        JIS H3300 C7060,C7150
     
  • Union Joint
  •   Union type fittings have round-nose to cone seat joint and to ensure freedom leaks, care must be taken to avoid damage to the jointing faces.
    With joints of this type it is essential to use a suitable jointing compound, or tape to ensure completely satisfactory result.
     
  • Flux
  •   Flux is recommended and specially suitable for use with silver brazing fittings.
    Satisfactory joints can, however, be made with other suitable silver brazing fluxes.
     
  • Socket Weld Fittings
  •   All silver-brazing fittings can be also supplied as fittings without integral silver brazing alloys.
    These fittings have no silver ring groove.