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      低壓鍋爐管

      詳細說明


       

      Product Name

      Material

      Standard

      Specification

      Application

      Low - middle  pressure boiler tube

      10#
      20#
      16Mn

      GB3087-2008

      ASTM A106 A,B

      ∮8-1240*1-200

      Apply to all kinds of structure low pressure, middle pressure boiler and locomotive boiler

       


      Standard

      Steel grade

      Chemical composition (%)

      C

      Mn

      Si

      Cr

      Ni

      Cu

      P.S

      GB3087

      10

      0.07~0.14

      0.35~0.65

      0.17~0.37

      ≤ 0.15

      ≤ 0.30

      ≤ 0.20

      ≤ 0.030

      20

      0.17~0.24

      0.35~0.65

      0.17~0.37

      ≤ 0.25

      ≤ 0.25

      ≤ 0.20

      ≤ 0.030

      Mechanical property

      Tensile strength ?(MPa)

      Yield strength (MPa)

      Elongation(%)

      10

      335~475

      ≥ 195

      ≥ 24

      20

      410~550

      ≥ 245

      ≥ 20


      Dimension tolerance:


      Steel grade

      Dimension
      mm

      Tolerance

      Common grade

      Senior grade

      Hot rolled
      (extruded) pipe

      OD
      D

      ≤159

      +1.0%(min+0.50mm)

      +1.0%(min+0.5mm)

      >159

      +1.0%

      +1.0%

      TH
      S

      ≤20

      +15%(min+0.45mm)
      -12.5%(min-0.35mm)

      +1.0%(min+0.30mm)

      >20

      +12.5%

      +10%

      D≥351Hot expanded

      +15%

      Cold drawn/rolled pipe

      OD
      D

      10~30

      +0.40mm

      +0.20mm

      >30~50

      +0.45mm

      +0.25mm

      >50

      +1.0%

      +0.75%

      TH
      S

      1.5~3.0

      +15%
      -10%

      +10%

      >3.0

      +12.5%
      -10%

      +10%

       




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