Tube Sheets, Brackets & Fittings

Steloy Foundries has established itself as one of only a handful of suppliers worldwide that can cast tube sheets up to 2 tons or 5 metres in length, allowing designers the freedom to maximise tubes in the ever decreasing spaces within the petrochemical industry.

Produced in accordance with a number of ASTM specifications, static castings for the petrochemical industry can be divided into two main applications: return bends and tube supports. Materials for return bends (and other components in the same grouping such as Y-pieces, elbows and plug headers) are listed in Table 5 of API 560. Tube supports, for which major materials are listed in Table 8 of API 560, include tube sheets, side wall supports, tube hangers and brackets.

Static castings are subject to the requirements indicated by the applicable specifications and also to specific quality assurance requirements prescribed by the customer. These may include radiographic and liquid penetrant examination, inspection of dimensional tolerances and surface finish, and mechanical and stress rupture testing.

Tube Supports

Tube supports include the following static components:

  • Tube sheets
  • Side wall supports
  • Tube hangers
  • Brackets
  • The alloys in which these components are produced have been indicated in the table below and also include a number of alloys not listed in API 560.

    All these statically cast products are normally subjected to the requirements indicated by the applicable (Static) Cast Specifications, but also adhere to specific quality assurance requirements prescribed by the client, including:

  • Radiographic examination (critical areas, especially tube sheets)
  • Liquid penetrant examination
  • Dimensional tolerances (as cast and/or machined)
  • Surface finish (ASTM A802)
  • Mechanical testing, if required, can be conducted at room temperature (as cast or after ageing) or at high-temperature. Stress rupture tests, as a quality assurance measure, are often also required (e.g. ASTM A447 type II).

    Specification of reference

    Application

    ASTM A216 gr WCB

    Return Bends, Tube Support

    ASTM A217 gr WC1

    Return Bends

    ASTM A217 gr WC6

    Return Bends

    ASTM A217 gr WC9

    Return Bends, Tube Support

    ASTM A217 gr C5

    Return Bends, Tube Support

    ASTM A217 gr C12

    Return Bends

    ASTM A351 gr CF8

    Return Bends

    ASTM A351 gr CF8

    Return Bends

    ASTM A351 gr CF8M

    Return Bends

    ASTM A351 gr CT-15C

    Return Bends

    ASTM A351 gr CK20        

    Return Bends

    ASTM A351 gr HK40

    Return Bends, Tube Support

    ASTM A297 gr HF

    Tube Support

    ASTM A447 type II

    Tube Support

    ASTM A560 gr 50Cr-50Ni-Nb

    Tube Support

    Unassigned HP45

    Tube Support

    Unassigned HP45 Nb

    Tube Support

    G-NiCr28W (2.487)

    Tube Support

    G-50NiCrCoW35-25-15-5 (1.4869)

    Tube Support

    G-40NiCrNb45-35 (1.4889)Gx40NiCrSiNb35-26 micro (1.4852 micro alloy)

    Return Bends

    ASTM A351 gr CF8C

    Return Bends