Plate & blind flange NB 20 NP0.6 (Table 5) — IS 6392
Plate & blind flange NB 20 NP0.6 (Table 5) to IS 6392: outside dia 90 mm, bore / id (plate) 28.9 mm, thickness — plate rf 14 mm, thickness — blind rf 14 mm.
Dimensions of Plate & blind flange NB 20 NP0.6 (Table 5)
| Symbol | Dimension | Value |
|---|---|---|
| OD | Outside dia | 90 mm (3.543 in) |
| · | Bore / ID (plate) | 28.9 mm (1.138 in) |
| · | Thickness — plate RF | 14 mm (0.551 in) |
| · | Thickness — blind RF | 14 mm (0.551 in) |
| · | Teshi QC flag | STD~ID |
SKU TSH-FLANGE-IS-6392-NP0-6-TABLE-5-20 · Standard IS 6392 · Teshi master data
Purchase description
PLATE & BLIND FLANGE, NB 20, NP0.6 (TABLE 5), 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
- Blind rows record ID as [0.0] in source; omitted.
- PLATE FF thickness identical to PLATE thickness for every size; FF column omitted.
- BLIND FF thickness identical to BLIND thickness for every size; FF column omitted.
- Source has no values for: PCD, No. of holes, Hole dia, RF dia, RF height.
- Source StdRegistry tab maps NP0.6 to IS 6392 Table 5.
- Verified flag values are copied from the source: 'STD', 'STD~ID' or 'CHECK'. The source does not define them; 'STD~ID' presumably means standard dimensions with a derived/non-standard ID, and 'CHECK' rows were flagged for review.
- Size column is the NB taken from the source Key (e.g. 'NB150'); 'Size label in source' is the Size cell as typed.
Same size, other ratings
NP1.0 (Table 11)NP1.6 (Table 17)NP10.0 (Table 38)NP16.0 (Table 42)NP2.5 (Table 23)NP4.0 (Table 28)NP6.4 (Table 34)
Other sizes — Plate & blind flange, NP0.6 (Table 5)
NB 10NB 15NB 25NB 32NB 40NB 50NB 65NB 80NB 100NB 125NB 150NB 200NB 250NB 300NB 350NB 400NB 500NB 600NB 700NB 800NB 900NB 1000NB 1200NB 1400NB 1600NB 1800NB 2000
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.