GB-T1591 Q550D

 GB-T1591 Q550D, Q550D,Q550D Steel Plate,Q550D Stock,Q550D supplier

Unitedsteel Carbon Plate Factory are specialized in exporting GB-T1591 Q550D 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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  1. Q550D Adopt standard: GB-T1591 Standard Specification is for Rolled Steels for Welded Structure
  2. Q550D Specification:  Thickness: 1mm to 500mm; Width: 1500mm to 4500mm: Length: 3000mm to 27000mm
  3. Third Party Inspection for Q550D: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department.
  4. Q550D Chemical composition Max % of the Product analysis of grade
C Si Mn P S Nb V Ti
0.18 0.60 2.00 0.030 0.025 0.11 0.12 0.20
Cr Ni Cu N Mo B Als min  
0.80 0.80 0.80 0.015 0.30 0.004 0.015  
  1. Q550D Yield strength
Nominal thickness (mm) To 16 16-40 40-63 63-80 80-










ReH – Minimum yield strength (MPa) 550 530 520 500 490
  1. Q550D Tensile Strength
Nominal thickness (mm) To 40 40-63 63-80 80-100 100-150 150-250 250-400
ReH – Minimum yield strength (MPa) 670-830 620-810 600-790 590-780
  1. Q550D 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 47


  1. Equivalent grades of grade Q550D
  2. Q550D Delivery Time Or Lead Time: 15-30days
  3. Q550D 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 Q550D, 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,

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