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Chinese National Standard List: Pipeline fittings

GB/T 9113.26-1988 Integral steel pipe flanges with ring-joint face for PN 42.0MPa (420 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9113.1-1988 Integral steel pipe flanges with flat face for PN1.6 MPa(16 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9123.11-1988 Steel pipe blank flanges with raised face for PN 4.0MPa (40 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9114.3-1988 Hubbed screwed steel pipe flanges with raised face for PN 2.5MP (25 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9114.2-1988 Hubbed screwed steel pipe flanges with raised face for PN 1.0MPa (10 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9113.5-1988 Integral steel pipe flanges with raised face for PN4.0 MPa(40 bar) 
  Issued on:   Price(USD): 180.0
GB 1047-1970 Nominal inside diameters for pipes and pipe line accessories 
  Issued on:   Price(USD): 184.0
GB/T 9116.21-1988 Hubbed slip-on-welding steel pipe flanges with ring-joint face for PN2.0MPa(20bar) 
  Issued on:   Price(USD): 180.0
GB/T 9123.31-1988 Steel pipe blank flanges with ring-joint face PN 2.MPa (20 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9113.25-1988 Integral steel pipe flanges with ring-joint face for PN 25.0MPa (250 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9123.21-1988 Steel pipe blank flanges with male and female face for PN 10.0MPa (100 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9123.10-1988 Steel pipe blank flanges with raised face for PN 2.5MPa (25 bar) 
  Issued on:   Price(USD): 180.0
JB/T 6142.1-1992  
  Issued on: 1992-06-09   Price(USD): 184.0
GB/T 9116.11-1988 Hubbed slip-on-welding steel pipe flanges with male and female face for PN 1.6MPa (16 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9114.1-1988 Hubbed screwed steel pipe flanges with raised face for PN 0.6MPa (6 bar) 
  Issued on:   Price(USD): 180.0
GB/T 9122.2-1988 Loose plate steel pipe flanges with lapped pipe end for PN 1.0MPa (10 bar) 
  Issued on:   Price(USD): 180.0
DB13/T 1650-2012  
  Issued on:   Price(USD):
GB/T 14383-2021/XG1-2025 Forged fittings,socket-welding and threaded 
  Issued on: 2025-06-30   Price(USD):
GB/T 14383-2021 Forged fittings;socket-welding and threaded; includes Amendment 1 
  Issued on: 2025-06-30   Price(USD): 555.0
GB/T 29038-2024 Technical specification for light gauge stainless steel piping 
  Issued on: 2024-09-29   Price(USD): 735.0
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