Stainless steel flange from 40-800mm in PN6 - PN20, customized standard & dimension available, carbon steel, galvanized steel and stainless steel material for choice, high quality with the most competitive wholesale price. Contact us freely for more details of the steel backing rings from JUNNUO!
Raw Materials: Hot dipped galvanised carbon steel flanges, Stainless steel
Diameter : DN40-800mm (other size can custom)
Pressure Rating : PN6, PN8, PN10, PN16, PN20
Standards : EN1092/ISO7005
Junnuo provides state-of-the-art fitting accessories
for jointing HDPE piping system which not only
ensures the safe conveyance but also makes it
possible to easily move HDPE pipes at a later stage.
Flanged Joints (with Stub Flanges and Backing Plates) - HDPE pipes can be flange-jointed by using HDPE stub
Hot-dip galvanized flange is a class of flanges with good corrosion resistance, can be made in the flange after the formation of rust immersed in about 500 ℃ melting zinc liquid, so that the surface of the steel components attached to the zinc layer, so as to play the purpose of anti-corrosion.
flange ends in conjunction with metal backing plates and a sealing gasket to provide a demountable joint or to
match up with pumps, valves etc.
Backing Rings have been modified as per the requirements of HDPE sizes.
Junnuo can provide variety of backing ring for mechanical connectios in galvanized steel, statinless steel and PP coated steel.
The main function of Steel Flanges is to connect parts, which are used for connection between pipe ends and connection at the inlet and outlet of equipment. This connection method is not only suitable for pipeline engineering, but also widely used in chemical, construction, water supply, drainage, petroleum, light and heavy industries, refrigeration, sanitation, plumbing, fire protection, electricity, aerospace, shipbuilding and other fields.
The structure of Steel Flanges mainly includes: flange, bolts and gaskets. Flange is a key component for connecting two pipes, generally made of carbon steel, stainless steel and other materials. Bolts are used to connect flanges tightly, generally hexagonal bolts. Steel flanges also require gaskets to ensure the tightness of the connection.
1. Sealing performance: The sealing material of Steel Flanges can be rubber, polyurethane or metal sealing ring, etc. According to the required sealing effect and the medium used, the appropriate sealing material can be selected to effectively prevent the leakage of the medium and ensure the sealing of the pipeline system.
2. Convenience of installation and maintenance: Steel flanges are easy to install, do not require special tools and skills, and are convenient for users to operate and maintain. In terms of maintenance, steel flanges only need to be regularly inspected and replaced with wearing parts such as bolts, which is simple to maintain.
3. Wide application scenarios: Steel flanges are widely used in various pipeline connection occasions, such as water supply and drainage, sewage treatment, chemical industry, petroleum, gas and other fields. Especially suitable for pipeline connections that require extreme working conditions such as high pressure, high temperature, and strong corrosion.
Pipe Size | DN | PN | OD | PCD | ID | Bolt No. | Bolt Hole Dia | Thickness |
50 | 40 | 16 | 150 | 110 | 55 | 4 | 18 | 18 |
63 | 50 | 16 | 165 | 125 | 68 | 4 | 18 | 20 |
75 | 65 | 16 | 185 | 145 | 80 | 4 | 18 | 20 |
90 | 80 | 16 | 200 | 160 | 95 | 8 | 18 | 20 |
110 | 100 | 16 | 220 | 180 | 116 | 8 | 18 | 22 |
125 | 125 | 16 | 250 | 210 | 130 | 8 | 18 | 22 |
140 | 125 | 16 | 250 | 210 | 150 | 8 | 18 | 22 |
160 | 150 | 16 | 285 | 240 | 170 | 8 | 22 | 24 |
180 | 150 | 16 | 285 | 240 | 188 | 8 | 22 | 24 |
200 | 200 | 16 | 340 | 295 | 210 | 12 | 22 | 26 |
225 | 200 | 16 | 340 | 295 | 235 | 12 | 22 | 26 |
250 | 250 | 16 | 405 | 355 | 265 | 12 | 26 | 29 |
280 | 250 | 16 | 405 | 355 | 290 | 12 | 26 | 29 |
315 | 300 | 16 | 460 | 410 | 335 | 12 | 26 | 32 |
355 | 350 | 16 | 520 | 470 | 365 | 16 | 26 | 35 |
400 | 400 | 16 | 580 | 525 | 420 | 16 | 30 | 38 |
450 | 450 | 16 | 640 | 585 | 470 | 20 | 30 | 42 |
500 | 500 | 16 | 715 | 650 | 520 | 20 | 33 | 46 |
560 | 600 | 16 | 840 | 770 | 575 | 20 | 36 | 55 |
630 | 600 | 16 | 840 | 770 | 650 | 20 | 36 | 55 |
710 | 700 | 16 | 910 | 840 | 740 | 24 | 36 | 63 |
800 | 800 | 16 | 1025 | 950 | 830 | 24 | 39 | 74 |