One Job, Two Execution Routes
EN 10216 covers seamless steel tubes for pressure purposes; EN 10217 covers the same job in welded execution. Both are divided into parts by service temperature: –1 for ambient, –2 for elevated temperature (the boiler/power suffix), –4 for low temperature, –5 for stainless. When a European drawing says “P265GH tube to EN 10216-2”, every part of that sentence carries meaning.
| Part | Service | Example Steel | Execution |
|---|---|---|---|
| -1 | Ambient temperature | P235TR1 / TR2 | 10216 seamless; 10217 welded |
| -2 | Elevated temperature | P265GH, 16Mo3, 13CrMo4-5 | Boiler and hot piping |
| -4 | Low temperature | P215NL, P275NL1 | Notch-tough steels |
| -5 | Stainless | 1.4301/1.4404/1.4462 | Austenitic and duplex |
Test Categories I, II and III
Both standards grade quality by test category: Category I gets the base nondestructive scope, Category II adds more, Category III mandates 100% NDT of the weld (welded) or the full test regime (seamless). The category is chosen from the pressure/temperature design envelope — it must appear on the PO, because the same steel name can be supplied in different categories at different prices.
How This Maps to ASME Practice
EN 10216-2 P265GH is the customary counterpart to ASME SA106 B / SA105-class carbon steels, and 16Mo3 or 13CrMo4-5 face off against SA209 T1 / SA213 T11 respectively — comparable, but not automatically interchangeable: allowable stresses, tolerance systems and test regimes differ. Cross-standard substitution needs the design engineer’s written approval, not a mill’s opinion.
Reading a European tube callout: EN 10216-2 + steel name (P265GH) + test category + dimensions. Any missing element is an invitation for the wrong supply.
Frequently Asked Questions
Which execution is default for pressure piping?
Neither — the designer decides. Welded (10217) is cheaper and fine for most ambient service; seamless (10216) is chosen for higher integrity needs, heavy walls and small bores.
What does the TR1/TR2 suffix mean in 10216-1?
It defines the NDT/inspection scope on seamless tubes (TR2 is the tighter variant). Match it to your test category requirement.
Can I buy EN 10217-2 instead of EN 10216-2 to save cost?
Often yes for ambient-to-moderate service — subject to the design code accepting welded execution at the given thickness and category. Get it in writing.
CREATEEL supplies EN 10216 and EN 10217 tubes (parts 1/2/4/5) with test categories per design and 3.1 certification.
Standards & references: EN 10216 / EN 10217 · ASME
Need help picking the right standard? CREATEEL supplies carbon steel welded and seamless pipe to API, ASTM, EN and GB standards with EN 10204 3.1/3.2 certification. Send us your specification.
