Plaques de qualité de chaudière

 

Mehta acquiert l’actionnaire des plaques Bq:

 

Les plaques de qualité de chaudière aussi appelées couvertures de chaudière sont les plaques d’acier doux avec une composition chimique et des propriétés mécaniques qui rendent ces plaques Bq capables de supporter des températures élevées et une forte pression. Les plaques de chaudière sont utilisées dans diverses applications à haute température telles que des chaudières à vapeur, des chaudières en acier doux, des récipients sous pression, des tuyaux de stylo, des balles de LPG, en sont quelques exemples.

Les aciers Mehta sont en stock de plaques Bq testées selon la norme indienne IS 2002 GR.II, IS 2002 Gr.III, IS 2041 R 220, IS 2041 R 260.

Certaines des notes courantes disponibles en stock sont IS 2002 Gr.II et ASTM A 516 Gr.70 équivalent IS 2041 R 260.

 

Les tailles communes de plaques b.q. disponibles en stock avec les aciers Mehta sont:
  • THICK (mm)
    WIDTH (mm)
    LENGTH (mm)
  • 6
    1500
    6300
  • 8
    1500
    6300
  • 10
    1500
    6300
  • 10.2
    2500
    12500
  • 12
    2500
    12500
  • 14
    2500
    12500
  • 16
    2500
    12500
  • 18
    2500
    12500
  • 20
    2500
    12500
  • 22
    2500
    12500
  • 25
    2500
    12500
  • 28
    2500
    12500
  • 30
    2500
    12500
  • 32
    2500
    12500
  • 36
    2500
    12500
  • 40
    2500
    12500
  • 45
    2500
    10000
  • 50
    2500
    10000
  • 63
    2500
    6300
  • 70
    2500
    6300
  • 75
    2500
    6300
  • 80
    2500
    5000
  • 90
    2500
    5000
  • 100
    2500
    5000
Les teneurs communes en plaques de qualité de chaudière en stock avec les aciers Mehta sont les suivantes:
  • IS 2002-1 or IS 2002 Gr. I
  • IS 2002-2 or IS 2002 Gr. II
  • IS 2002-3 or IS 2002 Gr. III
  • IS 2041R220
  • IS 2041R260
  • IS 2041R355
Plaques de qualité des récipients à pression et plaques de qualité de la chaudière: :

Tableau d’utilisation et équivalent des plaques Bq

  • Description of use
    IS standard No and grade
    Near Equivalent Non IS Specification
  • IS 2002 Grade 1
    ASTM/ASME 515 Gr.60
  • For intermediate and
    high temperature
    IS 2002 Grade 2
    ASTM/ASME 515 Gr.65
  • IS 2002 Grade 3
    ASTM/ASME 515 Gr.70
  • IS 2041 Grade R 220
    ASTM/ASME 516 Gr.55
  • IS 2041 Grade R 220
    ASTM/ASME 516 Gr.60
  • IS 2041 Grade R 260
    ASTM/ASME 516 Gr.65
  • IS 2041 Grade R 260
    ASTM/ASME 516 Gr.70
  • For moderate & low temperature
    IS 2041 Grade R 355
    ASTM/ASME 537 Class 1
  • IS 2041 Grade H 235
    DIN 17155 Gr HI
  • IS 2041 Grade H 235
    EN 10028-P2-P235GH
  • IS 2041 Grade H 265
    EN 10028-P2-P265GH
  • IS 2041 Grade H 295
    EN 10028-P2-P295GH
  • IS 2041 Grade H 355
    EN 10028-P2-P355GH

Code SH pour produits en acier plat laminés à chaud

Mandatory tdc for supply of bq plates
MANDATORY TECHNICAL DELIVERY CONDITIONS FOR BQ PLATES
MANDATORY REQUIREMENTS FOR BOILER QUALITY GRADES
Nomenclature Mandatory TDC As per Specification Mandatory TDC As per Process requirement
IS 2002-1 Normalized for >= 12 mm
Tensile test + Bend test
Vacuum degassing for >= 40 mm
Above 40 mm, thickness tolerance as per mutual agreement.
IS 2002-2
IS 2002-3
IS 2041R220 Fine grain Practice (AI 0.02 min in ladle) Normalised for > 12 mm
Normalized for all thick when impact tested
Tensile test
Vacuum degassing for >= 40 mm
Vacuum degassing and micro alloy for all thickness – when impact test is lower than (-) 20*C  – Impact (Transverse) for any temperature.
IS 2041R260
IS 2041R355 Fine grain Practice (AI 0.02 min in ladle)
Normalized for all thickness
Tensile test + Impact test at any one temperature of +20/0/-20/-40
Vacuum degassing and micro alloy For all thickness
MANDATORY TECHNICAL DELIVERY CONDITIONS FOR BQ PLATES
MANDATORY REQUIREMENTS FOR BOILER QUALITY GRADES
Nomenclature Mandatory TDC As per Specification Mandatory TDC As per Process requirement
IS 2041R220/A285C Fine grain Practice (AI 0.02 min in ladle)
Tensile test
Normalized for > 12 mm
Normalized for all thick when impact tested
Vacuum degassing for >= 40 mm
IS 2041R220/SA285C
IS 2002-1/A515-60 Normalized for > 12 mm
Tensile test + Bend test
Vacuum degassing for >= 40 mm
IS 2002-1/SA515-60
IS 2002-2/A515-65
IS 2002-2/SA515-65
IS 2002-3/A515-70
IS 2002-3/SA515-70
IS 2041R220/A516-55 Fine grain Practice (AI 0.02 min in ladle)
Normalized for > 12 mm
Normalized for all thick when impact tested
Tensile test
Vacuum degassing for >= 40 mm
Vacuum degassing and micro alloy for all thickness – when impact test is lower than (-) 20*C  -Impact (Transverse) for any temperature.
IS 2041R220/SA516-55
IS 2041R220/A516-60
IS 2041R220/SA516-60
IS 2041R260/A516-65
IS 2041R260/SA516-65
IS 2041R260/A516-70
IS 2041R260/SA516-70
IS 2041R355/A537CL1 Fine grain Practice (AI 0.02 min in ladle)
Normalized for all thickness
Tensile test + Impact test at any one temperature of +20/0/-20/-40
Vacuum degassing and micro alloy For all thickness.
IS 2041R355/SA537CL1