1.
Steel pipe welding neck flanges with male and female face for PN 10.0MPa (100 bar)
GB/T9115.21-1988PN10.0MPa(100bar)凹凸面对焊钢制管法兰
2.
Steel pipe welding neck flanges with male and female face for PN 15.0MPa (150 bar)
GB/T9115.22-1988PN15.0MPa(150bar)凹凸面对焊钢制管法兰
3.
Steel pipe welding neck flanges with male and female face for PN 2.5MPa (25 bar)
GB/T9115.18-1988PN2.5MPa(25bar)凹凸面对焊钢制管法兰
4.
Steel pipe welding neck flanges with male and female face for PN 4.0MPa (40 bar)
GB/T9115.19-1988PN4.0MPa(40bar)凹凸面对焊钢制管法兰
5.
Steel pipe welding neck flanges with male and female face for PN 5.0MPa (50 bar)
GB/T9115.20-1988PN5.0MPa(50bar)凹凸面对焊钢制管法兰
6.
Steel pipe welding neck flanges with male and female face for PN 25.0MPa (250 bar)
GB/T9115.23-1988PN25.0MPa(250bar)凹凸面对焊钢制管法兰
7.
Steel pipe welding neck flanges with male and female face for PN 1.6 MPa (16 bar)
GB/T9115.17-1988PN1.6mpa(16bar)凹凸面对焊钢制管法兰
8.
Loose plate steel pipe flanges with welding neck collar with raised face for PN 2.5MPa (25 bar)
GB/T9120.1-1988PN2.5MPa(25bar)凸面对焊环松套板式钢制管法兰
9.
Loose plate steel pipe flanges with welding neck collar with raised face for PN 4.0MPa (40 bar)
GB/T9120.2-1988PN4.0MPa(40bar)凸面对焊环松套板式钢制管法兰
10.
Loose hubbed steel pipe flanges with welding neck collar with raised face for PN 5.0MPa (50 bar)
GB/T9118.2-1988PN5.0MPa(50bar)凸面对焊环松套带颈钢制管法兰
11.
Loose hubbed steel pipe flanges with welding neck collar with raised face for PN 2.0MPa (20 bar)
GB/T9118.1-1988PN2.0MPa(20bar)凸面对焊环松套带颈钢制管法兰
12.
Hubbed slip-on-welding steel pipe flanges with raised face for PN 1.6MPa (16 bar)
GB/T9116.5-1988PN1.6MPa(16bar)凸面带颈平焊钢制管法兰
13.
Hubbed slip-on-welding steel pipe flanges with raised face for PN 10.0MPa (100 bar)
GB/T9116.10-1988PN10.0MPa(100bar)凸面带颈平焊钢制管法兰
14.
Hubbed slip-on-welding steel pipe flanges with raised face for PN 2.0MPa (20 bar)
GB/T9116.8-1988PN2.0MPa(20bar)凸面带颈平焊钢制管法兰
15.
Hubbed slip-on-welding steel pipe flanges with raised face for PN 2.5MPa (25 bar)
GB/T9116.6-1988PN2.5MPa(25bar)凸面带颈平焊钢制管法兰
16.
Hubbed slip-on-welding steel pipe flanges with raised face for PN 1.0MPa (10 bar)
GB/T9116.4-1988PN1.0MPa(10bar)凸面带颈平焊钢制管法兰
17.
Hubbed slip-on-welding steel pipe flanges with raised face for PN 5.0MPa (50 bar)
GB/T9116.9-1988PN5.0MPa(50bar)凸面带颈平焊钢制管法兰
18.
Hubbed slip-on-welding steel pipe flanges with raised face for PN 4.0MPa (40 bar)
GB/T9116.7-1988PN4.0MPa(40bar)凸面带颈平焊钢制管法兰