Steel structure manufacturer since 2009 · 8 fabrication bases in China
ISO 3834 defines quality requirements for fusion welding. It is often required alongside EN 1090 and is referenced in many specifications.
| Part | المستوى | Typical link |
|---|---|---|
| ISO 3834-2 | Comprehensive | EXC3, EXC4 |
| ISO 3834-3 | معيار | EXC2 |
| ISO 3834-4 | Elementary | EXC1 |
Note on GGSteel status: GGSteel certification status for this standard to be confirmed. We fabricate to its requirements when your specification calls for it.
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EN 1090-1 and EN 1090-2 for steel structures: execution classes EXC1–EXC4, factory production control, CE marking and supplier checks.
Q235B, Q355B, Q390 and Q420 compared with ASTM A36, A572 and A992, EN S235 to S420 and AS/NZS grades: yield strength, impact tests and when substitution needs approval.
AS/NZS 5131 for fabrication and erection of structural steel in Australia and New Zealand: construction categories CC1–CC4 and supplier requirements.