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  • GL D
  • GL D STEEL

GL Grade D,GL D

  • Steel Standard: GL (Germanischer Lloyd)
  • Rolling Type: Shipbuilding steel plate,Common strength ship plate
  • Thickness: 3mm-300mm
  • Width: 1200mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: As Rolled/Control-rolled/TMCP/Normalised
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■ Overview
GL Grade D steel plate is common strength shipbuilding plate which is mainly used for built hull of vessels,ship body construction.Normally when rolling,Air rolled and Control Rolled is ok for ship plate GL Grade D with the thickness equal and belows 40 Millimeters,and for thickness above 40mm,the heat treatment shall be Normalised or TMCP,these two technical treatment would improve steel strength in yield and tensile points for shipbuilding steel plate GL Grade D.
■ Full Data
Technical Requirements & Additional Services:
♦ High tension test
♦ Z-Test (Z15,Z25,Z35)
♦ Low temperature impacting test
♦ Ultrasonic test under ASTM A435,A577,A578
♦ Cetificated by ABS,LR,GL,BV,DNV,KR,NK,CCS,RINA
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands 
■ Techicals
Mechnical property for GL Grade D shipbuilding structual steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
235 400-520 200mm 50mm
21 24

Chemical composition for GL Grade D ship steel (Heat Analysis Max%)

Main chemical elements composition of GL Grade D
C Si Mn P S
0.21 0.10-0.35 0.60 0.035 0.035
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