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GB/T 12387-1990 Asbestos rubber gaskets for ductile iron pipe flanges with raised face 
  Issued on:   Price(USD):
GB/T 12384-1990 Specification for ductile iron pipe flanges 
  Issued on:   Price(USD):
GB/T 12383.2-1990 Ductile iron pipe blank flanges with raised face for PN 1. 6 MPa (16bar) 
  Issued on:   Price(USD):
GB/T 12383.6-1990 Ductile iron pipe blank flanges with raised face for PN 5. 0 MPa (50bar) 
  Issued on:   Price(USD):
GB/T 12383.4-1990 Ductile iron pipe blank flanges with raised face for PN 2. 5 MPa (25bar) 
  Issued on:   Price(USD):
GB/T 12383.5-1990 Ductile iron pipe blank flanges with raised face for PN 4. 0 MPa (40bar) 
  Issued on:   Price(USD):
GB/T 12383.3-1990 Ductile iron pipe blank flanges with raised face for PN 2. 0 MPa (20bar) 
  Issued on:   Price(USD):
GB/T 12382.2-1990 Loose hubbed ductile iron pipe flandes with lapped pipe end for PN 5. 0 MPa (50bar) 
  Issued on:   Price(USD):
GB/T 12382.1-1990 Loose hubbed ductile iron pipe flanges with lapped pipe end for PN 2. 0 MPa (20bar) 
  Issued on:   Price(USD):
GB/T 12383.1-1990 Ductile iron pipe blank flanges with raised face for PN 1. 0 MPa (10bar) 
  Issued on:   Price(USD):
GB/T 12381.3-1990 Hubbed screwed ductile iron pipe flanges with raised face for PN 2. 5 MPa (25bar) 
  Issued on:   Price(USD):
GB/T 12381.1-1990 Hubbed screwed ductile iron pipe flanges with raised face for PN 1. 0 MPa (10bar), PN 1. 6 MPa (16bar) 
  Issued on:   Price(USD):
GB/T 12381.2-1990 Hubbed screwed ductile iron pipe flanges with raised face for PN 2. 0 MPa (20bar) 
  Issued on:   Price(USD):
GB/T 12381.4-1990 Hubbed screwed ductile iron pipe flanges with raised face for PN 4. 0 MPa (40bar) 
  Issued on:   Price(USD):
GB/T 12380.6-1990 Integral ductile iron pipe flanges with raised face for PN 5. 0 MPa (50bar) 
  Issued on:   Price(USD):
GB/T 12380.4-1990 Integral ductile iron pipe flanges with raised face for PN 2. 5 MPa (25bar) 
  Issued on:   Price(USD):
GB/T 12380.5-1990 Integral ductile iron pipe flanges with raised face for PN 4. 0 MPa (40bar) 
  Issued on:   Price(USD):
GB/T 12380.1-1990 Integral ductile iron pipe flanges with raised face for PN 1. 0 MPa (10 bar) 
  Issued on:   Price(USD):
GB/T 12380.2-1990 Integral ductile iron pipe flanges with raised face for PN 1. 6 MPa (16bar) 
  Issued on:   Price(USD):
GB/T 12380.3-1990 Integral ductile iron pipe flanges with raised face for PN 2. 0 MPa (20bar) 
  Issued on:   Price(USD):
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