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:
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:
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 |