AB/AQ51 Steel plate ABS Grade AQ51 Z35 manufacturer


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The main products list.

ABS Grade AQ51 Steel pipe, ABS Grade AQ51 steel plate,ABS Grade AQ51 round steel, rebar,ABS Grade AQ51 flat steel, ABS Grade AQ51 square steel,ABS Grade AQ51 hexagonal steel, ABS Grade AQ51 hot rolled steel coil, ABS Grade AQ51cold rolled steel coil, ABS Grade AQ51 pattern steel coil, ABS Grade AQ51 strip steel.


Gangsteel produced and exported AB/AQ51 Steel plate, ABS Grade AQ51 Z35 offshore drilling platform steel plate, flat bar, machined parts, cutting parts.


ABS Grade AQ51 Detail productive technology in the following:


  1. Adopt standard: ABS (American Bureau of shipping)
  2. AQ51 application fields:
    AQ51 is a super high strength quenched and tempered steel grade. It used in offshore drilling platform, Shipping marine engineering and Hull Structural project.
  3. AQ51 Chemical composition:


Grade C % max Si % max Mn % max P % max S % max
AB/AQ51 +QT 0.18 0.80 1.70 0.025 0.015
AL % min Nb % max V% max Ti % max Ni % max
0.018 0.06 0.12 0.05 2.0
Cu % max Cr % max Mo% max N% max 0% max
0.05 1.50 0.70 0.015 30


  1. AQ51 Mechanical Property:


Grade Yield Strength Tensile Strength Elongation Impact Energy
ABS AQ51 MPa (min) MPa % (min) 0 degree J
   500 610-770 16 50


  1. Heat Treatment: Quenched and tempered, Normalized, TMCP
  2. Tolerance: The thickness tolerance is -+0.3mm
  3. Size: Thick: 8mm-300mm, width: 1500mm-4000mm, length: 3000mm-18000mm


  1. Delivery time: 35-40days
  2. AB/EQ43 are Used for making hulls, offshore oil production drilling platforms, platform pipe joints and other structural parts, hull structures, marine machinery and main hulls, drilling rigs, pile boots, pile legs, racks, semicircular plates, etc. of marine drilling platforms and oil production platforms Manufacturing.

The AB/EQ43 manufacturer with the most complete specifications, the largest thickness (315mm), and the highest grade (E690) has good weldability, good fatigue resistance, lamellar tear resistance, and good internal quality and cold formability.


Gangsteel has much experience in super high strength hull structural steel plate, if you have any need in ABS/AQ51 steel plate; please feel free to contact us. We will give our mill competitive price on the base of faster delivery.


Other super strength steel grade in Gangsteel factory:








AB/AQ51 Steel plate|ABS Grade AQ51 Z35 manufacturer