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Accessories for Flanged Pipes

A pipeline is as strong and durable as the weakest link. Consequently, care has to be taken to ensure that the gaskets used in the pipeline, the nuts and bolts used and the jointing procedure is perfect. This not only enables trouble-free execution and testing but shall ensure decades of smooth functioning of the entire system.

Gaskets – For Flanged pipe jointing, Mould flat rubber gaskets of synthetic rubber like Styrene Butadiene Rubber (SBR) or Ethylene Propylene Diemethyle Monomer (EPDM) are used. Use of poor quality gaskets is not recommended.

Nuts and Bolts – Nuts and bolts to be used for Flanged jointing should be properly galvanized to resist corrosion. The Nuts and bolts are made of Mild steel as per IS 1367 and the Materials Grade is of 4.6. The bolt Dimension should be as per IS:1364. High Tension bolts may be used where high axial load is anticipated.

PN 10
Size DN
(mm)
Pitch Circle
Diameter
Size of Bolts
(mm)
No. of
Bolts
Length
(mm)
100 180 M16 8 65
150 240 M20 8 70
200 295 M20 8 70
250 350 M20 12 80
300 400 M20 12 80
350 460 M20 16 80
400 515 M24 16 85
450 565 M24 20 85
500 620 M24 20 90
600 725 M27 20 100
700 840 M27 24 110
750 900 M27 24 110
800 950 M30 24 110
900 1050 M30 28 120
1000 1160 M33 28 130
 
PN 16
Size DN
(mm)
Pitch Circle
Diameter
Size of Bolts
(mm)
No. of
Bolts
Length
(mm)
100 180 M16 8 65
150 240 M20 8 70
200 295 M20 12 70
250 355 M24 12 85
300 410 M24 12 85
350 470 M24 16 85
400 525 M27 16 100
450 585 M27 20 100
500 650 M30 20 110
600 770 M33 20 120
700 840 M33 24 130
750 900 M33 24 130
800 950 M36 24 140
900 1050 M36 28 140
1000 1170 M39 28 160

 
   


 
 
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