Industrial flange
Industrial flanges for joining pipework, valves and process equipment to ASME/ANSI B16.5.
Product Overview
Industrial flanges are used to join sections of pipework, valves and process equipment, allowing a joint to be opened and remade without damaging the pipe. Tose'e Tejarat Sayyalat supplies flanges in a range of types to suit the project's technical requirement, including flanges welded to hose fittings and crimped assemblies.
Applications
- Joining sections of pipework and industrial valves
- Flanged connection of hose fittings and high-pressure equipment
- Connection to process equipment in refineries, petrochemical plants and power stations
End-User Industries
Technical Specification
| Flange type | Slip-on, weld neck, blind, socket weld or threaded, according to the project requirement |
|---|---|
| Reference standard | ASME/ANSI B16.5 (NPS 1/2 to 24 inch) and ASME B16.47 (larger sizes); to API 6A for wellhead equipment |
| Standard pressure classes | 150, 300, 600, 900, 1500 and 2500 to ASME B16.5 |
| Material | Carbon steel, alloy steel or stainless steel, to suit the medium and operating conditions |
| Instrumentation-related application | Flanged connection of small-bore pipework to measurement and process control equipment, to suit the instrument |
Flange pressure classes (ASME B16.5) — carbon steel example at ambient temperature
| Class | Approximate permissible pressure at ambient temperature |
|---|---|
| Class 150 | Approx. 20 bar (285 psi) |
| Class 300 | Approx. 51 bar (740 psi) |
| Class 600 | Approx. 102 bar (1,480 psi) |
| Class 900 | Approx. 153 bar (2,220 psi) |
| Class 1500 | Approx. 255 bar (3,705 psi) |
| Class 2500 | Approx. 425 bar (6,175 psi) |
In plain terms: A flange's class number (150 or 300, for example) is not a pressure in psi or bar; it is a conventional rating whose actual permissible pressure varies with the flange material and the operating temperature. When requesting a quotation, therefore, always state both the flange class and the material (A105, A182 or stainless steel, for instance), not the class alone.
Technical Catalogue
The technical catalogue and flange dimension table are available on request from our sales department.
Request the technical catalogueRequest a quotation for flanges
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