OEM manufacturer ASME B16.5 · ASME B16.47 · ASTM A105 · ASTM A182 · ASTM A350
Industrial Flanges Manufacturer in India — Plate Flanges to 8000 NB, ASME B16.5 & B16.47
Teshi Group is an OEM manufacturer of flanges in India. Our core is plate flanges and large-diameter flanges up to 8 metres (8000 NB), cut and machined from plate in our own works. We forge, machine and inspect weld neck, slip-on, blind, socket weld, threaded and lap joint flanges to ASME B16.5 (NPS ½"–24") and ASME B16.47 Series A/B (NPS 26"–60") in carbon steel (ASTM A105, A350 LF2), stainless steel (A182 F304/F304L/F316/F316L/F321) and alloy steel (A182 F11/F22/F91). Every flange is dimensionally inspected and supplied with mill test certificates traceable to the raw-material heat number.
Every lot is dimensionally inspected against the published ASME B16.5 or B16.47 tables before dispatch.
Our core
Plate flanges and large-diameter flanges up to 8000 NB
Industrial Flanges — specifications & size ranges
| Type | Standard | Size range | Pressure class / schedule | Material grades |
|---|---|---|---|---|
| Plate Flange | EN 1092-1 Type 01 / 05, IS 6392, AWWA C207, BS 10 | DN 10 – 8000 NB | PN 2.5 – PN 16; AWWA Class B / D / E | Plate: IS 2062, ASTM A36, A516 Gr 60 / 70, P265GH / P355GH, A387 Gr 11 / 22, A240 304L / 316L / 321 / 310S, duplex S32205, super duplex S32750 |
| Large Diameter (to 8000 NB) | ASME B16.47 / AWWA C207 / EN 1092-1 / client drawing | 26" – 8000 NB | To table or design calculation | Carbon, boiler-quality, Cr-Mo, stainless, duplex and nickel-alloy plate |
| Weld Neck | ASME B16.5 | ½"–24" | 150#–2500# | Carbon steel A105, A181, A694 F42–F70; LTCS A350 LF1, LF2, LF3, LF6; alloy A182 F1, F5, F9, F11, F12, F22, F91, F92; stainless F304/L/H, F310, F316/L/H/Ti, F317L, F321/H, F347/H; 904L, 254 SMO (F44); duplex F51, F60; super duplex F53, F55, F61; Monel 400/K-500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C276/C22/B2, Alloy 20; titanium Gr 1/2/5/7/12; Cu-Ni 90/10, 70/30 |
| Slip-On | ASME B16.5 | ½"–24" | 150#–1500# | Carbon steel A105, A181, A694 F42–F70; LTCS A350 LF1, LF2, LF3, LF6; alloy A182 F1, F5, F9, F11, F12, F22, F91, F92; stainless F304/L/H, F310, F316/L/H/Ti, F317L, F321/H, F347/H; 904L, 254 SMO (F44); duplex F51, F60; super duplex F53, F55, F61; Monel 400/K-500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C276/C22/B2, Alloy 20; titanium Gr 1/2/5/7/12; Cu-Ni 90/10, 70/30 |
| Blind | ASME B16.5 | ½"–24" | 150#–2500# | Carbon steel A105, A181, A694 F42–F70; LTCS A350 LF1, LF2, LF3, LF6; alloy A182 F1, F5, F9, F11, F12, F22, F91, F92; stainless F304/L/H, F310, F316/L/H/Ti, F317L, F321/H, F347/H; 904L, 254 SMO (F44); duplex F51, F60; super duplex F53, F55, F61; Monel 400/K-500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C276/C22/B2, Alloy 20; titanium Gr 1/2/5/7/12; Cu-Ni 90/10, 70/30 |
| Socket Weld | ASME B16.5 | ½"–3" | 150#–1500# | Carbon steel A105, A181, A694 F42–F70; LTCS A350 LF1, LF2, LF3, LF6; alloy A182 F1, F5, F9, F11, F12, F22, F91, F92; stainless F304/L/H, F310, F316/L/H/Ti, F317L, F321/H, F347/H; 904L, 254 SMO (F44); duplex F51, F60; super duplex F53, F55, F61; Monel 400/K-500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C276/C22/B2, Alloy 20; titanium Gr 1/2/5/7/12; Cu-Ni 90/10, 70/30 |
| Threaded | ASME B16.5 | ½"–6" | 150#–2500# | Carbon steel A105, A181, A694 F42–F70; LTCS A350 LF1, LF2, LF3, LF6; alloy A182 F1, F5, F9, F11, F12, F22, F91, F92; stainless F304/L/H, F310, F316/L/H/Ti, F317L, F321/H, F347/H; 904L, 254 SMO (F44); duplex F51, F60; super duplex F53, F55, F61; Monel 400/K-500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C276/C22/B2, Alloy 20; titanium Gr 1/2/5/7/12; Cu-Ni 90/10, 70/30 |
| Lap Joint | ASME B16.5 | ½"–24" | 150#–2500# | Carbon steel A105, A181, A694 F42–F70; LTCS A350 LF1, LF2, LF3, LF6; alloy A182 F1, F5, F9, F11, F12, F22, F91, F92; stainless F304/L/H, F310, F316/L/H/Ti, F317L, F321/H, F347/H; 904L, 254 SMO (F44); duplex F51, F60; super duplex F53, F55, F61; Monel 400/K-500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C276/C22/B2, Alloy 20; titanium Gr 1/2/5/7/12; Cu-Ni 90/10, 70/30 |
| Large Diameter (Series A / B) | ASME B16.47 | 26"–60" | 150#–600# | Carbon steel A105, A181, A694 F42–F70; LTCS A350 LF1, LF2, LF3, LF6; alloy A182 F1, F5, F9, F11, F12, F22, F91, F92; stainless F304/L/H, F310, F316/L/H/Ti, F317L, F321/H, F347/H; 904L, 254 SMO (F44); duplex F51, F60; super duplex F53, F55, F61; Monel 400/K-500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C276/C22/B2, Alloy 20; titanium Gr 1/2/5/7/12; Cu-Ni 90/10, 70/30 |
Industrial Flanges types
24 productsWeld Neck Flange
ASME B16.5 · ASME B16.47
View productOEM manufacturerSlip-On Flange
ASME B16.5 · EN 1092-1 Type 12
View productOEM manufacturerBlind Flange
ASME B16.5 · ASME B16.47
View productOEM manufacturerSocket Weld Flange
ASME B16.5
View productOEM manufacturerThreaded Flange
ASME B16.5 · ASME B1.20.1
View productOEM manufacturerLap Joint Flange
ASME B16.5 · ASME B16.9
View productCore productPlate Flange
EN 1092-1 Type 01 · IS 6392 · DN 10 – 8 m
View productCore productLarge Diameter Flanges
ASME B16.47 · AWWA C207 · up to 8000 NB
View productOEM manufacturerRing Type Joint (RTJ) Flange
ASME B16.5 · ASME B16.47 Series A
View productOEM manufacturerLong Weld Neck Flange
ASME B16.5 (flange end) · Manufacturer standard / client drawing (barrel)
View productOEM manufacturerSpectacle Blind, Spade & Spacer
ASME B16.48
View productOEM manufacturerOrifice Flange
ASME B16.36 · ASME B1.20.1
View productOEM manufacturerReducing Flange
ASME B16.5
View productOEM manufacturerSquare Flange
Manufacturer standard / client drawing
View productOEM manufacturerAnchor Flange
ASME B31.4 / B31.8 / B31.3 (design) · Manufacturer standard / client drawing
View productOEM manufacturerExpander Flange
ASME B16.5 (flange end) · Manufacturer standard (body)
View productOEM manufacturerFlat Face Flange
ASME B16.5 · EN 1092-1 (Type A facing)
View productOEM manufacturerTongue and Groove Flange
ASME B16.5 · EN 1092-1 (facing Type C / Type D)
View productOEM manufacturerMale and Female Flange
ASME B16.5 · EN 1092-1 (facing Type E / Type F)
View productOEM manufacturerSwivel Ring Flange
Manufacturer standard / client drawing · ASME B16.5 / B16.47 (mating bolt pattern)
View productOEM manufacturerWeldoflange & Nipoflange
ASME B16.5 (flange end) · Manufacturer standard (body)
View productOEM manufacturerSAE J518 Hydraulic Flange
SAE J518-1 (Code 61) · SAE J518-2 (Code 62)
View productOEM manufacturerIBR Approved Flanges
Indian Boiler Regulations, 2026 · ASME B16.5
View productOEM manufacturerLarge Diameter Flanges
ASME B16.47 Series A · ASME B16.47 Series B
View productOEM manufacturerEN 1092-1 / DIN Flanges
EN 1092-1:2018 · EN 10222 (forgings)
View productTechnical data sheets
Dimensional standards
Material grades
All gradesComplete material range
- Carbon steel
- ASTM A105 / A105N; ASTM A181 Cl 60, Cl 70; ASTM A266 Gr 2, Gr 4 (large forgings)
- High-yield carbon steel
- ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70 (MSS SP-44 grades F52–F70)
- Low-temperature carbon steel
- ASTM A350 LF1, LF2 Cl 1, LF2 Cl 2, LF3, LF6, LF9
- Alloy steel (Cr-Mo)
- ASTM A182 F1, F2, F5, F5a, F9, F11 Cl 1 / 2 / 3, F12 Cl 1 / 2, F21, F22 Cl 1 / 3, F22V, F91, F92, F911; ASTM A336 F11, F22 (large forgings)
- Stainless steel
- ASTM A182 F304, F304L, F304H, F304LN, F309H, F310, F316, F316L, F316H, F316LN, F316Ti, F317, F317L, F321, F321H, F347, F347H, F348
- 904L and 6Mo
- 904L (ASTM A182 F904L, UNS N08904); 254 SMO / 6Mo (ASTM A182 F44, UNS S31254); AL-6XN (ASTM A182 F62, UNS N08367)
- Duplex stainless steel
- ASTM A182 F51 (UNS S31803), F60 (UNS S32205, 2205)
- Super duplex stainless steel
- ASTM A182 F53 (UNS S32750, 2507), F55 (UNS S32760), F61 (UNS S32550)
- Nickel alloys
- ASTM B564 / B160 / B462: Nickel 200 / 201 (N02200 / N02201), Monel 400 (N04400), Monel K-500 (N05500), Inconel 600 (N06600), Inconel 625 (N06625), Inconel 718 (N07718), Incoloy 800 / 800H / 800HT (N08800 / N08810 / N08811), Incoloy 825 (N08825), Hastelloy C276 (N10276), Hastelloy C22 (N06022), Hastelloy B2 / B3 (N10665 / N10675), Alloy 20 (N08020)
- Titanium
- ASTM B381 Grade F1, F2, F5 (Ti-6Al-4V), F7, F12
- Copper-nickel
- Cu-Ni 90/10 (UNS C70600) and 70/30 (UNS C71500), ASTM B151 bar; flanges to ASME B16.5 or EEMUA 145
Documentation
What you receive with every order
- Hard-stamped heat number
- EN 10204 3.1 mill test certificate
- Dimensional inspection report against the governing standard
- Packing list with heat numbers
- Third-party inspection on request
- Seaworthy wooden cases for export orders
Flanges by material
Complete Flange Dimensions
ASME B16.5 / B16.47 / B16.36, EN 1092-1 PN6–PN100, IS 6392, IS 1538, BS 10, AS 2129, JIS B2220, AWWA C207, MSS SP-44, P-T ratings, studs and gaskets · A4 book · 111 pages
DownloadReference book · PDFComplete Piping Dimension Catalogue
Pipes, flanges, fittings, olets, bolting, gaskets, plates and structurals, P-T ratings, alloy chemistry and mechanicals · A4 book · 194 pages
DownloadFAQ
Industrial Flanges: common questions
Which flange types does Teshi Group manufacture?
Weld neck, slip-on, blind, socket weld, threaded and lap joint flanges to ASME B16.5 from NPS ½" to 24", and large-diameter weld neck and blind flanges to ASME B16.47 Series A and B from NPS 26" to 60". Non-standard flanges are made to drawing.
What materials are your flanges forged in?
Carbon steel ASTM A105 and A350 LF2, stainless steel A182 F304, F304L, F316, F316L and F321, and alloy steel A182 F11, F22 and F91. Other grades are quoted on request.
What documents are supplied with flanges?
A mill test certificate to EN 10204 3.1 with chemistry, mechanical properties and heat treatment, a dimensional inspection report, and any NDT or third-party inspection release required by the order.
Can you supply flanges with IBR certification?
Yes. Teshi Group is IBR approved, and flanges for boiler and steam service are supplied with IBR certification when specified.
What is the difference between ASME B16.5 and ASME B16.47?
ASME B16.5 covers flanges from NPS ½" to 24". ASME B16.47 covers NPS 26" to 60" in two dimensionally different series: Series A (formerly MSS SP-44), which is heavier, and Series B (formerly API 605), which is more compact.
What facing types are available?
Raised face (RF), flat face (FF) and ring-type joint (RTJ) are standard. Other facings, such as tongue-and-groove or male-female, are machined to drawing.
Can you supply the complete joint?
Yes. Flanges can be supplied with matching gaskets and stud bolts cut to the correct length for the flange size, class and facing, on the same order.
Need a size or grade not listed here?
Our engineering team manufactures against your specific drawing or datasheet, with dimensional sign-off before dispatch.
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