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Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.

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EN P355GH Steel for heat-resistant pressure vessels

P355GH steel plate, EN10028 P355GH steel plates is a kind of material for boiler and pressure vessel steel. EN10028 P355GH steel plates is characterised by a minimum yield strength of 280-355 MPa and by good weldability,so P355GH steel is mainly used for manufacturing boilers, pressure vessels and pipes transporting hot liquids.The following is EN10028 P355GH steel plate’s Chemical composition and mechanical properties.

P355GH Steel Chemical analysis

Grade C. % Mn.% S. N Cu Nb Ti. Si. P. AL Cr. Mo. Ni Vi
P355GH 0.10-0.22 0.10-1.70 0.015 0.012 0.30 0.020 0.03 0.60 0.025 0.020 0.30 0.08 0.30 0.02

P355GH Steel Mechanical properties

Grade Type Thickness mm Yield strength Mpa(min) Tensile Strength MPa Elongation % (min) Impact Energy (KVJ) (min)
-20° +20
P355GH Normalized ≤16 16 > to≤40 40 > to≤60 60 > to≤100 100 > to≤150 150 > to≤250 355 510-650 20 27 34 40
345 510-650 20 27 34 40
335 460-580 20 27 34 40
315 490-630 20 27 34 40
295 480-630 20 27 34 40
280 470-630 20 27 34 40

Delivery Condition:

AR(As Hot Rolled),





Q+T(Quenched and Tempered),

UT(Ultrasonic Test:ASTM A435,ASTM A578-C/B/A,EN10160-S0E1,S1E2,S2E3,S3E4),

Impact Test,

PWHT(Post Weld Heat Treatment),


Z Test(Z15, Z25, Z35)

Widely used throughout the petrochemical industry, P355GH is a pressure vessel steel grade as specified under the Euro Norm standard (EN10028) which has superseded British Standard and DIN standard equivalents. This normalized steel is used worldwide by fabricators of welded pressure vessels, industrial boilers and heat exchangers and is engineered to work well in elevated temperature service.

We offer grade P355GH from stock and the material is available for shipping to you worldwide. As with all of our steels, the material comes with mill test certification and stamping and is therefore fully traceable. We can also subject the material to a variety of stringent tests prior to distribution. Steel for heat-resistant pressure vessels. P355GH steel gives optimum performance for pressurised products that must support a creep limit greater than 180N/mm2 at 400ºC.

These types of steel are characterised by good weldability. They are used above all for manufacturing boilers, pressure vessels and pipes for the transportation of hot liquids. They also have good properties at high and low temperatures. The product is always supplied in the normalised condition.

EN P355GH Steel for heat-resistant pressure vessels

EN P355GH Steel for heat-resistant pressure vessels

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