Steel backing ring ANSI B16.5Steel backing ring ANSI B16.5Steel backing ring ANSI B16.5
Steel backing ring ANSI B16.5Steel backing ring ANSI B16.5Steel backing ring ANSI B16.5

Steel backing ring ANSI B16.5

Stainless steel flange from 11/2 inch-32 inch in PN10/ PN16/150PSI, 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!

1.Raw Materials: Stainless Steel, Carbon Steel, Galvanized Steel
2.Standards : ASTM/ASME ANSI B16.5
3.Diameter : DN50-800mm/11/2inch-32inch
4.Pressure Rating : PN10/ PN16/150PSI

Description

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
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.

Function

Steel backing ring is an important component in pipeline connection. It achieves sealing through the synergy of bolts, flanges and gaskets. Specifically, the role of steel backing ring is reflected in the following aspects:

1. Sealing connection: Steel backing ring generates sufficient pressure between gasket and flange sealing surface through the pre-tightening force of bolts, so that the deformation of gasket surface is sufficient to fill the microscopic unevenness of flange sealing surface, thereby achieving the purpose of sealing. This kind of sealing connection requires not only good sealing, but also the ability to withstand the pressure and temperature fluctuations generated by the fluid in the pipeline.

2. Withstand pressure and temperature fluctuations: The material of flange is usually carbon steel, stainless steel or alloy steel, etc., to meet the needs of different media and working conditions. Steel backing ring can withstand high pressure and temperature to ensure the safe operation of pipeline system.

3. Prevent fluid leakage: Gasket, as an indispensable sealing element in flange connection, is placed between two flanges. Through the tightening force of bolts and nuts, the gasket is compressed on the sealing surface of the flange to achieve the sealing effect. Gaskets are usually made of rubber, asbestos, polytetrafluoroethylene, etc. They have good sealing and corrosion resistance and can effectively prevent leakage of fluids in pipelines.

4. Widely used: Steel backing rings and their matching gaskets and bolts together constitute the basic unit of pipeline connection and are widely used in pipeline systems in water, petroleum, chemical, electric power, municipal and other industries to connect various pipelines and equipment.

Specifications

Pipe Size DN OD PCD ID Bolt No. Bolt Hole Dia  Thickness
50 1 1/2 127 98.6 63 4 16 17.5
63 2″ 152 120.5 68 4 20 19.5
75 2 1/2″ 178 139.5 80 4 20 22.5
90 3″ 190 152.5 95 4 20 24
110 4″ 229 190.5 116 8 20 24
125 5″ 254 216 130 8 22 24
140 5″ 254 216 150 8 22 24
160 6″ 279 241.5 170 8 22 25.5
180 6″ 279 241.5 188 8 22 25.5
200 8″ 343 298.5 210 8 22 29
225 8″ 343 298.5 235 8 22 29
250 10″ 406 362 265 12 26 30.5
280 10″ 406 362 290 12 26 30.5
315 12″ 483 432 335 12 30 32
355 14″ 533 476 365 12 26 35
400 16″ 597 540 420 16 30 37
450 18″ 635 578 470 16 33 40
500 20″ 698 635 520 20 33 43
560 24″ 813 749.5 575 20 36 48
630 24″ 813 749.5 650 20 36 48
710 28″ 927.1 863.6 740 28 35 52.4
800 32″ 1060.4 977.9 830 28 41 57.1

 

Advantages

JUNNUO can supply various sizes HDPE butt welding fittings from 11/2 inch-32 inch. HDPE butt welding fittings include: flange, equal-diameter tee, reducer tee, ball valve, coupling, elbow 45 degrees, Elbow 90 degrees and so on. Can be customized according to requirements, our HDPE fittings are high quality new and unused PE100 or PE100RC raw materials, mainly used in HDPE water, oil and gas piping systems.
 
Stainless steel flanges are fully compliant with ASTM/ASME ANSI B16.5.

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