Main Characteristics
● High strength: Super duplex steel flanges have high yield strength and tensile strength, capable of withstanding large pressures and loads.
● Excellent corrosion resistance: Due to the high proportion of alloying elements, super duplex steel flanges show excellent corrosion resistance in various corrosive mediums, especially in the chloride environment, seawater environment, and high temperature and high pressure and other harsh conditions, its anti-corrosion performance is particularly outstanding.
● Good low-temperature toughness: super duplex steel flanges can still maintain good toughness and impact strength at low temperatures, suitable for use in low-temperature environments.
● Good weldability and machinability: Despite the high alloy content, super duplex steel flanges still have good weldability and machinability, which can meet the needs of various complex shapes and sizes.
Super Duplex Steel Threaded Flanges Weight
|
Standard |
Class |
Dia. |
Bolt Circle Dia. |
No. of Bolts |
Bolt Size |
Dia. of Bolt Hole |
|
AS4087 Flange |
PN14 Flange |
95 |
67 |
4 |
M12 |
14 |
|
AS 2129 Flange |
Table C Flange |
95 |
67 |
4 |
13 |
14 |
|
Table D Flange |
95 |
67 |
4 |
13 |
14 |
|
|
Table E Flange |
95 |
67 |
4 |
13 |
14 |
|
|
Table F Flange |
95 |
67 |
4 |
13 |
14 |
|
|
Table H Flange |
114 |
83 |
4 |
16 |
17 |
|
|
Table J Flange |
114 |
83 |
4 |
16 |
17 |
|
|
ANSI B16.5 Flange |
ANSI 150 Flange |
89 |
60 |
4 |
13 |
16 |
|
ANSI 300 Flange |
95 |
67 |
4 |
13 |
16 |
|
|
ANSI 600 Flange |
95 |
67 |
4 |
13 |
16 |
|
|
ANSI 900 Flange |
121 |
83 |
4 |
19 |
22 |
|
|
ANSI 1500 Flange |
121 |
83 |
4 |
19 |
22 |
|
|
ISO 7005 (DIN) Flange |
PN6 Flange |
80 |
55 |
4 |
M10 |
11 |
|
PN10 Flange |
95 |
65 |
4 |
M12 |
14 |
|
|
PN16 Flange |
95 |
65 |
4 |
M12 |
14 |
|
|
PN20 Flange |
90 |
60.5 |
4 |
M14 |
16 |
|
|
PN25 Flange |
95 |
65 |
4 |
M12 |
14 |
|
|
PN40 Flange |
95 |
65 |
4 |
M12 |
14 |
Areas of Application
Super duplex steel flanges are widely used in many fields due to their excellent performance:
● Marine engineering: used for the connection of offshore oil platforms, submarine pipelines, marine platforms and other equipment, able to withstand the corrosive nature of seawater and high pressure and temperature and other harsh working environments.
● Petrochemical industry: used in the manufacture of chemical equipment, piping systems, reactors, etc., able to withstand the corrosive nature of a variety of chemical media.
● Food processing: super duplex steel flanges also play an important role in food processing equipment that requires high hygiene standards and corrosion resistance.
● Energy: Used for pipeline and equipment connection in the field of energy such as oil, natural gas, gas, etc., capable of resisting corrosion caused by water vapor, carbon dioxide and other gases on the equipment.
Preparation and Processing
The preparation and processing of super duplex steel flanges requires strict control of parameters such as temperature, pressure and welding current to ensure that the dimensional accuracy, surface quality and mechanical properties of the flanges meet the requirements for use. During processing, special attention also needs to be paid to the heat treatment and surface treatment of the material to improve its corrosion resistance and extend its service life.
