SA299 Gr.B Steel Plate

Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.

2026-08-26
ASTM SA299 Gr.A and SA299 Gr.B steel plates

SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.

2026-08-19
SA299 Gr. A Steel Plate for Boilers and Pressu

ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.

2026-08-11
What is the difference between A285 Gr. C and

A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.

2026-08-04
What material is SA283 Gr.B?

SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.

2026-07-31

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P355QL1 steel plate, P355QL1 boiler steel plate

P355QL1 steel plate under EN10028-6 standard, it has a good weldable, so it is mainly used in high temperature equipment and pressure vessel.

P355QL1 introduce:

P…Q means the -20 degree and the impact energy is 27J

P…QH means the -20 temperature quality and the impact energy is 27J

P…QL1 means the -40 temperature quality and the impact energy is 27J

P355QL1 steel plate size:

Thickness: 6MM to 300MM, Width: 1500mm to 4050mm, Length: 3000mm to 15000mm

P355QL1 steel chemical composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S	N	B
P355QL1	0.16	0.4	1.5	0.020	0.010	0.015	0.005
	Mo	Cu	Nb	Ni	Ti	V	Zr
	0.25	0.3	0.05	0.5	0.03	0.06	0.05

P355QL1 steel mechanical properties:

Grade	Type	Thickness	Yield Strength	Tensile Strength	Elongation	Impact Energy
		(mm)	MPa (min)	MPa	% (min)	(KV J) (min)
						-40 degree
P355QL1	+ QT	t ≤ 50	355	490-630	22	27
		50＜t ≤ 100	355	490-630	22	27
		100＜t ≤ 150	315	450-590	22	27

P355QL1 steel application:

P355QL1 steel plates are widely used in pressure vessel, boiler, storage tanks and heat exchanger in oil, gas project.

P355QL1 steel surface treatment: Shot blasting and painting or coated.

Additional Condition :

UT (Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered), Z Direction Test(Z15, Z25, Z35) , Charpy V-Notch Impact Test, HIC test, NDT, PWHT( Simulated Post Weld Heat Treatment), NACE0175, The Third Party Test (Such as SGS Test), Coated or Shot Blasting and Painting.

If you want to know more information about P355QL1 steel, please contact us and let us know your required specification, the best price will be quoted in shortest time.