GB-T1591 Q420A

 GB-T1591 Q420A, Q420A,Q420A Steel Plate,Q420A Stock,Q420A supplier

Unitedsteel Carbon Plate Factory are specialized in exporting GB-T1591 Q420A Low alloy and high strength steel plate, heavy plate and wide, heavy plate, Which is a large steel plate supplier mill at Unitedsteel Group.

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Keyword: GB-T1591 Q420A, Q420A,Q420A Steel Plate,Q420A Stock,Q420A supplier

  1. Q420A Adopt standard: GB-T1591 Standard Specification is for Rolled Steels for Welded Structure
  2. Q420A Specification:  Thickness: 1mm to 500mm; Width: 1500mm to 4500mm: Length: 3000mm to 27000mm
  3. Third Party Inspection for Q420A: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department.
  4. Q420A 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 0.80 0.30 0.015 0.20  
  1. Q420A Yield strength
Nominal thickness (mm) To 16 16-40 40-63 63-80 80-










ReH – Minimum yield strength (MPa) 420 400 380 360 360 340
  1. Q420A Tensile Strength
Nominal thickness (mm) To 40 40-63 63-80 80-100 100-150 150-250 250-400
ReH – Minimum yield strength (MPa) 520-680 520-680 520-680 520-680 500-650
  1. Q420A Impact Test degree and energy
  Min Energy Nominal thickness
Temperature ℃
Thickness (mm) 12-150 150-250 250-400
Notch impact test. Min. absorbed energy


  1. Equivalent grades of grade Q420A
  2. Q420A Delivery Time Or Lead Time: 15-30days
  3. Q420A Extra Service: Pretreatment (Shot Blasting, Sand Blast, Painting and Galvanized), Cutting Parts, Sample Service, Third Party inspection, UT Test and Size inspection.
  4. If you have any requirement in steel plate for Q420A, whether the new plate or stock list of material, please feel free to contact us by email of calling.
  5. If you had any question at our plate or service. Please contact our after service department to get faster reply.

Unitedsteel 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 Unitedsteel Group and any requirement in steel material, please feel free to contact us.