EN 10253-2 Type B P235GH · Carbon Steel General Pressure · ≤300°C

1.0345 (P235GH) Pipe Fittings

Deutsche Version: Formstücke aus P235GH (1.0345)

EN 10253-2 Type B buttweld pipe fittings in 1.0345 — P235GH carbon steel. The foundational European carbon steel grade for general pressure piping and pressure vessels, rated to 300°C. The "GH" designation (Glühend Hochtemperatur / elevated temperature) confirms suitability for pressure service at temperature. Equivalent to ASTM A234 WPB in scope and application. The standard choice for steam, water, gas, and general process piping throughout European installations.

Min Yield Strength

235 MPa

Max Service Temp

300°C

ASTM Equivalent

A234 WPB

EN Carbon Steel Pressure Grade Comparison

Grade	W.Nr.	Min Yield (MPa)	Max Temp	Typical Use
P235GH	1.0345	235	300°C	General pressure piping — standard grade
P265GH	1.0425	265	400°C	Higher strength / elevated temp service

Chemistry (EN 10216-2 / EN 10253-2)

Element	Max
C (Carbon)	0.16%
Si	0.35%
Mn	0.60–1.20%
P	0.025%
S	0.010%

Applications

Steam distribution and boiler piping to 300°C
Water treatment and utility piping systems
Natural gas and compressed air distribution
General process piping in chemical and petrochemical plants
District heating networks

Cross-References

W.Nr.	1.0345
EN Name	P235GH
ASTM Equivalent	A234 WPB
Standard	EN 10253-2 Type B

Welding

Filler: ER70S-6 (MIG/TIG) or E7018 (SMAW). Low preheat for thin wall; preheat 100°C for t >25mm. No PWHT required for standard service.

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Testing & Inspection

✓ Chemical analysis against EN 10216-2 / EN 10253-2
✓ Tensile test, with impact test where the standard or your order requires it
✓ Impact test where your specification or PED category requires it
✓ PMI (positive material identification) on every order
✓ Visual and dimensional inspection to EN 10253
✓ NDT (UT, RT, MT or PT) when your order or code calls for it
✓ EN 10204 3.1 certificate as standard; 3.2 with TÜV, Lloyd's Register, Bureau Veritas, DNV or your own inspector

Size Range

DN15–DN600 and larger. Outside diameters follow the EN 10220 / EN ISO 1127 pipe series; wall thickness is matched to your connecting pipe.

Size	OD (mm)
DN 15	21.3
DN 20	26.9
DN 25	33.7
DN 32	42.4
DN 40	48.3
DN 50	60.3
DN 65	76.1
DN 80	88.9
DN 100	114.3
DN 125	139.7
DN 150	168.3
DN 200	219.1
DN 250	273.0
DN 300	323.9
DN 350	355.6
DN 400	406.4
DN 450	457.0
DN 500	508.0
DN 600	610.0

Export Documents & Packing

✓ Commercial invoice, packing list and certificate of origin
✓ EN 10204 certificates with heat-number traceability
✓ PED 2014/68/EU and AD 2000-Merkblatt W0 documentation for European projects
✓ Seaworthy wooden cases or pallets, bevel ends protected, marked to your instructions
✓ FOB, CFR or CIF delivery terms

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Frequently Asked Questions: P235GH (1.0345) Fittings

What is P235GH (1.0345)?

A European non-alloy steel for pressure purposes at elevated temperature, with a minimum yield strength of 235 MPa. It is the standard grade for general pressure piping and pressure vessels up to about 300°C.

What is the difference between P235GH and P265GH?

P265GH (1.0425) has a higher minimum yield strength (265 MPa vs 235 MPa), giving a higher allowable stress in design, and is used up to about 400°C.

Which certificates come with P235GH fittings?

EN 10204 3.1 as standard, or 3.2 with third-party inspection, plus PED documentation for European pressure equipment projects.