1.
Steel pipe blank flanges with tongue and groove face for PN 1.6MPa (16 bar)
GB/T9123.24-1988PN1.6MPa(16bar)榫槽面钢制管法兰盖
2.
Steel pipe blank flanges with tongues and groove face for PN 2.5MPa (25 bar)
GB/T9123.25-1988PN2.5MPa(25bar)榫槽面钢制管法兰盖
3.
Steel pipe blank flanges with tongue and groove face for PN 5.0MPa (50 bar)
GB/T9123.27-1988PN5.0MPa(50bar)榫槽面钢制管法兰盖
4.
Steel pipe blank flanges with tongue and groove face for PN 15.0MPa (150 bar)
GB/T9123.29-1988PN15.0MPa(150bar)榫槽面钢制管法兰盖
5.
Steel pipe blank flanges with tongue and groove face for PN 25.0MPa (250 bar)
GB/T9123.30-1988PN25.0MPa(250bar)榫槽面钢制管法兰盖
6.
Steel pipe blank flanges with tongue and groove face for PN 4.0MPa (40 bar)
GB/T9123.26-1988PN4.0MPa(40bar)榫槽面钢制管法兰盖
7.
Steel pipe blank flanges with tongue and groove face for PN 10.0MPa (100 bar)
GB/T9123.28-1988PN10.0MPa(100bar)榫槽面钢制管法兰盖
8.
Steel pipe welding neck flanges with tongue and groove face for PN 1.6MPa (16 bar)
GB/T9115.24-1988PN1.6MPa(16bar)榫槽面对焊钢制管法兰
9.
Steel pipe welding neck flanges with tongue and groove face for PN 15.0MPa (150 bar)
GB/T9115.30-1988PN25.0MPa(250bar)榫槽面对焊钢制管法兰
10.
Steel pipe welding neck flanges with tongue and groove face for PN 4.0MPa (40 bar)
GB/T9115.26-1988PN4.0MPa(40bar)榫槽面对焊钢制管法兰
11.
Steel pipe welding neck flanges with tongue and groove face for PN 5.0MP (50 bar)
GB/T9115.27-1988PN5.0MPa(50bar)榫槽面对焊钢制管法兰
12.
Steel pipe welding neck flanges with tongue and groove face for PN 2.5MPa (25 bar)
GB/T9115.25-1988PN2.5MPa(25bar)榫槽面对焊钢制管法兰
13.
Hubbed slip-on-welding steel pipe flanges with tongue and groove face for PN 1.6MPa (16 bar)
GB/T9116.16-1988PN1.6MPa(16bar)榫槽面带颈平焊钢制管法兰
14.
Hubbed slip-on-welding steel pipe flanges with tongue and groove face for PN 4.0MPa (40 bar)
GB/T9116.18-1988PN4.0MPa(40bar)榫槽面带颈平焊钢制管法兰
15.
Hubbed slip-on-welding steel pipe flanges with tongue and groove face for PN 5.0MPa (50 bar)
GB/T9116.19-1988PN5.0MPa(50bar)榫槽面带颈平焊钢制管法兰
16.
Hubbed slip-on-welding steel pipe flanges with tongue and groove face for PN2.5MPa (25 bar)
GB/T9116.17-1988PN2.5MPa(25bar)榫槽面带颈平焊钢制管法兰
17.
Integral steel pipe flanges with tongue and groove face for PN 10.0MPa (100 bar)
GB/T9113.20-1988PN10.0MPa(100bar)榫槽面整体钢制管法兰
18.
Integral steel pipe flanges with tongue and groove face for PN1.6MPa(16 bar)
GB/T9113.16-1988PN1.6MPa(16bar)榫槽面整体钢制管法兰