Pressure vessel steel
A53-B pressure vessel steel
A53 Grade B is an ASME/ASTM pipe steel for pressure and structural use. Seamless or welded. It is not P235GH on the certificate.
- Delivery conditions
- +N / +NT
- Also known as
- A/SA-53 Gr. B, SA53-B
Designations
- EN standard
- A/SA-53 Gr. B
- Group
- Pressure vessel steel
What it is used for
Inch-size pipe in plants where the PO specifies A53 B.
Limits
A106-B when seamless boiler pipe is required. API 5L Gr B when it is line pipe.
Delivery
We source A53-B from European mill partners as plate, flat bar, round bar, seamless tube, welded tube, cut to your dimensions and ship the certificate with the material. Typical condition: +N / +NT. Standard: A/SA-53 Gr. B. From a single cut piece to larger lots — with no minimum charge, so you do not have to buy a full commercial length to get what you need.
Certificates and documentation
A53-B can be supplied with a material certificate to EN 10204, depending on producer, dimension and the requirements specified for the delivery. On pressure-bearing material the certificate is part of the product: standard, condition and tests must be on the enquiry, and 3.2 must be agreed before the material is locked at the mill. EN 10204 3.1 can be supplied on a wide range of our materials — 3.2 and third party by project, when the mill can issue it.
Dimension programme
| Form | Range | Note |
|---|---|---|
| Round bar | Bar to order | When the form is bar, not plate. |
| Plate | 6–80 mm thickness | PED and certificate govern the size — not a bar Ø. |
| Seamless tube | 1/8–60″ (Ø3–Ø1524 mm) | ASME/API seamless. State NPS, schedule or wall. |
| Welded tube | 1/8–60″ (Ø3–Ø1524 mm) | ASME/API. State schedule or wall and whether the weld seam must be documented. |
| Fittings | Ø12–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). Type A and B. Not a stock statement. |
| Flanges | Ø14–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). PN 6–400. Not a stock statement. |
The range is a delivery programme, not a stock statement. Length is cut to your drawing.
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Send your enquiry
State grade, dimensions and quantity — or attach a drawing. We reply with a quote.