Metal Casting and FabricationSteloy Castings operates in conjunction with a number of competent partners to supply the required assemblies in accordance with our clients’ exacting specifications. The metal casting and fabrication solutions that we offer from our state-of-the-art facilities currently include different configurations of heater coils (reformer, cracking, catalyst), and harps and collectors, using the quality cast components (static castings and centrifugally cast tubes/pipes) that we produce on a regular basis.

Related wrought components (as indicated in Tables 4 and 6 of API 560) are acquired from approved suppliers and the machining of cast components is conducted by Steloy Castings. This includes pull boring of cast tube inner surfaces, machining of outer surfaces of cast tube, and machining of weld preps on static castings as well as cast tube.

The following specifications and standards are applicable to the fabrication and testing of fabricated assemblies:


API 560

Fired heaters for general refinery service

API 530

Calculation of heater tube thickness in petroleum refineries


D1.1 Structural welding code

ASME B31.3

Chemical plant and petroleum refinery piping

ASME Section I, II, VIII

Boiler and pressure vessel code

ASME Section V

Non-destructive examination

ASME Section IX

Welding and brazing qualifications


Quality standard for steel castings and forgings for valves, flanges and fittings and other piping components

Magnetic particle examination method


Quality standard for steel castings for valves, flanges and fittings and other piping components. Visual method


Quality standard for steel castings and forgings for valves, flanges and fittings and other piping components. Liquid penetrant examination method

For welding

Since API 560 Section 13 indicates specific norms pertaining to shop fabrication, coil fabrication (in particular) is conducted in accordance with the following:

Coils are fabricated in accordance with the applicable provisions of ASME B31.3 for piping, Chapter V

Welding processes applied will include one or more of the following:


– GTAW (manual or automatic)

– GMAW (spray transfer)

– FCAW (with external shielding gas)

– General conditions listed in API 560   section 13.3

For inspection, examination and testing

– Weld inspection and examination: API 560 section 14.2

– Pressure testing: API 560 section 14.5.1

– Positive Materials identification (PMI): API 560 section 14.5.4

For preparation and shipment

API 560 section 13.6

News updates

Steloy Investing in the Future of the Foundry

Are you looking to advance your career in the fast-paced, technologically advanced and forward-looking industry of metal castings? Then put yourself in line to take that step with South Africa’s leading specialist Foundry Group.

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About Us

Established in 1984, Steloy Castings ranks as one of the most advanced specialist foundries in South Africa, supplying static and centrifugally cast high-alloy components to customers across the globe.


Head Office:
4 Cobalt Street, Ekandustria, Bronkhorstspruit,
South Africa
P.O. Box 1591, Bronkhorstspruit, 1020, South Africa

Tel: +27 13 933 3331
Fax: +27 13 933 3653