Unitedsteel are specialized in producing and exporting ASTM A299 A299 heavy plate and wide, heavy plate, Which is a large steel plate supplier mill at Unitedsteel Group. A299 GR B,ASTM A299 GR B,A299 GR B Steel Plate,A299 GR B HIC,A299 GR B Nace


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  1. A299 GR B Adopt standard: ASTM A204 Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
  2. A299 GR B Specification: Thickness: 1mm to 100mm; Width: 1500mm to 3500mm: Length: 3000mm to 27000mm
  3. Third Party Inspection for A299 GR B: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department.
  4. A299 GR B Chemical composition % of the Product analysis of grade
Grade C Si Mn P S V AL Cr %
A299 Gr.B 0.28-0.30 0.13-0.45 0.84-1.62 0.035 0.035      
Cu Mo Nb Ni Ti Tungsten    


  1. A299 GR B Mechanical Property
Grade Thick.(mm) Min Yield Tensile Elongation Min Impact Energy
A299 Gr.B 6-50 310-325 Mpa 550-690 Mpa 19%    
50-200 310-325 Mpa 550-690 Mpa 19%    


UNITEDSTEEL also could supply super thick steel plate from 100mm to 300mm, certified by TUV, SGS, CE and nine classification societies: ABS, DNV, LR, GL, BV, KR, RINA, CCS, NK.

At competitive price, better quality, faster delivery and better service in supply steel plate in China


UNITEDSTEEL has a strong relationship with our mill. We can supply ASTM A299 GR B steel material directly at our mill ex-factory prices. Each plate has the Mill Certificate Test EN 10204 3.1/3.2 Version.


  1. A299 GR B Delivery Time Or Lead Time: 15-30days
  2. A299 GR B Extra Service: Pretreatment (Shot Blasting, Sand Blast, Painting and Galvanized), Cutting Parts, Sample Service, Third Party inspection, UT Test and Size inspection.
  3. If you have any requirement in steel plate for A299 GR B, whether the new plate or stock list of material, please feel free to contact us by email of calling.
  4. 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

Supplementary Requirements

S2. Product Analysis,       S8: Ultrasonic Examination

S3: Simulated pos-weld heat treatment of mechanical

S15: Reduction of area measurement and test coupons

S18: Maximum Tensile strength

S6: Drop weight test

S30:Charpy V notch impact test for structural shapes


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