Flange drilling NB 80 PN 10 — IS 6392
Flange drilling NB 80 PN 10 to IS 6392: outside dia 200 mm, pcd 160 mm, no. of bolts 8, thickness 20 mm.
Dimensions of Flange drilling NB 80 PN 10
| Symbol | Dimension | Value |
|---|---|---|
| · | Outside dia | 200 mm (7.874 in) |
| · | PCD | 160 mm (6.299 in) |
| · | No. of bolts | 8 |
| · | Bolt size | M16 |
| · | Thickness | 20 mm (0.787 in) |
SKU TSH-FLANGE-IS-6392-PN-10-80 · Standard IS 6392
Purchase description
FLANGE DRILLING, NB 80, PN 10, ASTM A105N, IS 6392
Available materials: ASTM A105N, ASTM A350 LF2 Cl 1, ASTM A182 F304/304L, ASTM A182 F316/316L, ASTM A182 F11 Cl 2, ASTM A182 F22 Cl 3, ASTM A182 F51 (Duplex), ASTM A182 F53 (Super Duplex), ASTM A694 F52 / F60, IS 2062 E250 (plate).
Notes
- Plate flanges for welding. IS 6392 Table 11 (1.0 N/mm2) carries the note 'for nominal sizes 10 to 175 mm, use Table 17' — so 15-175 rows are Table 17 (1.6 N/mm2) values; 200-600 are Table 11.
Same size, other ratings
Other sizes — Flange drilling, PN 10
NB 15NB 20NB 25NB 32NB 40NB 50NB 65NB 100NB 125NB 150NB 175NB 200NB 250NB 300NB 350NB 400NB 500NB 600
Frequently asked questions
What are the main types of pipe flanges?
Weld neck (WN), slip-on (SO), blind (BL), socket weld (SW), threaded (THD), lap joint (LJ) and plate flanges. Special types include orifice, long weld neck, reducing flanges and spectacle blinds.
When should I use a weld neck flange instead of a slip-on?
Use weld neck flanges for high pressure, high or cycling temperature, and lines with vibration or fatigue loading. The tapered hub and full-penetration butt weld spread stress smoothly. Slip-on flanges are cheaper and easier to align, but their fatigue life is roughly one third of a WN.
What does Class 150, 300 or 600 mean on a flange?
The ASME class is a pressure-rating designation, not a pressure in psi. The allowable pressure depends on the material group and temperature. A Class 150 A105 flange is rated 19.6 bar at 38 °C but 13.8 bar at 200 °C.
Is a 150# flange rated for 150 psi?
No. A Class 150 carbon-steel flange is rated about 285 psi (19.6 bar) at ambient temperature, and about 170 psi (11.7 bar) at 260 °C. The "150" is a class number.