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Unequal angles Designation ISA 75 × 50 × 8 — IS 808

Unequal angles Designation ISA 75 × 50 × 8 to IS 808: a — mm 75 mm, b — mm 50 mm, t — mm 8 mm, mass — kg/m 7.4 kg/m.

Dimensions of Unequal angles Designation ISA 75 × 50 × 8

SymbolDimensionValue
·A — mm75 mm (2.953 in)
·B — mm50 mm (1.969 in)
·t — mm8 mm (0.315 in)
·Mass — kg/m7.4 kg/m (4.97 lb/ft)

SKU TSH-OTHER-IS-808-ISA75×50×8 · Standard IS 808 · teshi-web

Purchase description

UNEQUAL ANGLES, Designation ISA 75 × 50 × 8, AS PER SPECIFICATION, IS 808

Available materials: As per specification.

Notes

Other sizes — Unequal angles, Standard

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.

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