GB-T1591 Q390B Steel Plate supplier



Qfsteels are specialized in exporting GB-T1591 Q390B Steel Plate Low alloy and high strength steel plate. GB-T1591 Q390B Steel Plate heavy plate and wide, heavy plate Which is a large steel plate supplier mill at Qfsteels Group.


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Q390B Adopt standard: GB-T1591 Standard Specification is for Rolled Steels for Welded Structure

Q390B Specification: Thickness: 1mm to 500mm; Width: 1500mm to 4500mm: Length: 3000mm to 27000mm

Third Party Inspection for Q390B:

Q390B Chemical composition Max % of the Product analysis of grade

C Si Mn P S Nb V Ti
0.20 0.50 1.70 0.035 0.035 0.07 0.20 0.20
Cr Ni Cu N Mo B Als min
0.30 0.50 0.30 0.015 0.10

GB-T1591 Q390B Steel Plate Yield strength

Nominal thickness (mm) To 16 16-40 40-63 63-80 80-










ReH – Minimum yield strength (MPa) 390 370 350 330 330 310

Q390B Tensile Strength

Nominal thickness (mm) To 40 40-63 63-80 80-100 100-150 150-250 250-400
ReH – Minimum yield strength (MPa) 490-650 470-620

Q390B Impact Test degree and energy

Min Energy Nominal thickness
Temperature ℃ 20
Thickness (mm) 12-150 150-250 250-400
Notch impact test. Min. absorbed energy 34


Equivalent grades of grade Q390B

Q390B Delivery Time Or Lead Time: 15-30days

Q390B Extra Service: Pretreatment (Shot Blasting, Sand Blast, Painting and Galvanized), Cutting Parts, Sample Service, Third Party inspection, UT Test and Size inspection.

If you have any requirement in steel plate for GB-T1591 Q390B Steel Plate, please feel free to contact us by email of calling.

If you had any question at our plate or service. Please contact our after service department to get faster reply.

Qfsteels Group Company Principle


More Cheaper Price,

More Faster Delivery,

The Best Company Prestige,

The Best After sales service,

The One step Steel material Solution

The Best Professional quality control system


Welcome to Qfsteels Group and any requirement in steel material GB-T1591 Q390B Steel Plate, please feel free to contact us.

GB-T1591 Q390B Steel Plate supplier
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