Carbon, low-temperature and chrome-moly steel flanges and fittings
The bulk of most piping projects. We manufacture carbon and alloy steel flanges in volume and supply IBR-approved material for boiler and steam service.
Product forms and specifications
| Product | Specification and grade |
|---|---|
| Forged flanges | ASTM A105 / A105N, A350 LF2 Cl.1 and Cl.2, A694 F42 to F70, A182 F5, F9, F11, F22, F91; stainless A182 F304/304L, F316/316L, F321, F347, F310 |
| Plate flanges | IS 2062 E250 / E350, ASTM A516 Gr 60 / 70, A387 Gr 11 / 22 |
| Butt-weld fittings | ASTM A234 WPB, WPC, WP5, WP9, WP11, WP22, WP91; A420 WPL6; MSS SP-75 WPHY 42–70; A403 WP304L / WP316L |
| Pipe (stocked and sourced) | ASTM A106 Gr B, A53, A333 Gr 6, API 5L, A335 P5–P91, IS 1239 and IS 3589 |
| Bolting | ASTM A193 B7, B7M, B16, B8, B8M; A320 L7; A194 2H, 2HM, 4, 7, 8, 8M |
We manufacture the flanges, fittings and fabrications listed. Pipe is supplied from stock or sourced from approved mills.
Chemistry and strength
| Grade | UNS / W.Nr. | Nominal chemistry (%) | Min tensile / yield, MPa | PREN |
|---|---|---|---|---|
| A105 / A105N | K03504 | C 0.35 max, Mn 0.60–1.05 | 485 / 250 | n/a |
| A350 LF2 Cl.1 | K03011 | Impact tested at -46°C | 485 / 250 | n/a |
| A694 F52 / F65 | n/a | High-yield pipeline forgings | 455 / 360; 530 / 450 | n/a |
| A182 F11 Cl.2 | K11572 | 1.25Cr-0.5Mo | 485 / 275 | n/a |
| A182 F22 Cl.3 | K21590 | 2.25Cr-1Mo | 515 / 310 | n/a |
| A182 F91 | K90901 | 9Cr-1Mo-V | 585 / 415 | n/a |
| A182 F316L | S31603 | Cr 16–18, Ni 10–14, Mo 2–3 | 485 / 170 | about 24 |
For design use the values in the current edition of the specification your order calls for.
Where it is used
A105N is the default for utilities, cooling water and general process piping in steel plants and refineries. LF2 covers low-temperature service. Chrome-moly F11, F22 and F91 are used for steam, hot-blast and high-temperature lines. As an IBR-approved supplier we handle boiler and steam-line orders with the required IBR documentation.
Questions buyers ask
What is the difference between A105 and A105N?
A105N is A105 supplied in the normalised condition. Most project specifications now ask for normalised material for its more uniform grain structure and toughness.
Can you supply IBR flanges and fittings?
Yes. Teshi is IBR approved, and IBR orders are supplied with the documentation the Indian Boiler Regulations require.
Get a price for Carbon, low-temperature and Cr-Mo steel
Tell us the grades, standards, sizes and quantities. Our estimation team replies from info@teshigroup.com, usually within one working day for standard items.
Drawings, BOQ spreadsheets and QAPs are easiest by email. Attach them to a message to info@teshigroup.com and mention your project name.