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Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
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SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.2026-08-19
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ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.2026-08-11 -
A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.2026-08-04
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SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.2026-07-31
Boiler Plate Steel
Boiler Plate or Pressure Vessel Plate?
At Brown McFarlane we make a distinction between boiler plates and pressure vessel plates. Some other steel plate companies class everything as pressure vessel plate: there is no right and wrong about this.
The most important thing to know as a potential customer of Brown McFarlane is that we stock, process, and distribute all of the popular grades of Boiler and Pressure Vessel specifications like ASTM A516, ASME SA516, EN 10028-3, and BS 1501. You may call the steel whatever you want and leave us to worry about matching our stocks to your requirements.
About our Boiler Plate Steel
As well as being available from stock all steel plate can be cut to size and shape according to your fabrication and design requirements and all work is governed by our independently accredited and regularly audited quality systems to ISO 9001.
Our plates are sourced from the highest quality steel manufacturers in the world and, like all our suppliers, these manufacturers have been vetted and assessed by our procurement team. This not only means that the quality of our stock is assured but also that our extensive supply partnerships offer the opportunity for us to supply non-stock items or non-standard sizes directly from the steel mill to our customers. Using this form of supply it is often possible to deliver much faster than “standard” mill lead times.
All of our plates and plate products can be delivered to customers anywhere in the world using the services of our own in-house logistics staff.

