Rishabh Industries manufactures threaded flanges (screwed flanges) for oil and gas pipelines, refineries, petrochemical plants and offshore installations.
Threaded flanges connect pipes without welding, so they suit hazardous areas, high-pressure lines and quick-assembly piping. Every flange can be supplied to standard specifications or to your custom drawings.
What Is a Threaded Flange?
- A flange with internal threads that screws directly onto a threaded pipe end
- Needs no welding, so it is safer in flammable or explosive zones
- Fast to install and easy to dismantle
- Common in small-bore, high-pressure and utility piping systems
Technical Specifications at a Glance
- Size range: 1/2″ (15 NB) to 48″ (1200 NB)
- Standards: ANSI B16.5, ANSI B16.47 Series A and B, MSS SP-44, ASA, API 605, AWWA and custom drawings
- ASME pressure classes: 150, 300, 400, 600, 900, 1500 and 2500
- PN ratings: PN6, PN10, PN16, PN25, PN40, PN64 and more
- Face types: Flat Face (FF), Raised Face (RF) and Ring Type Joint (RTJ)
Materials Available
- Carbon steel:
- ASTM A105/A105N
- A350 LF1, LF2 Cl.1/Cl.2, LF3 Cl.1/Cl.2 (low-temperature service)
- A694 F42, F46, F48, F50, F52, F56, F60, F65, F70 (high-yield pipeline grades)
- A516 Gr. 60, 65, 70
- RST37.2 and C22.8
- Stainless steel: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316Ti, F310, F321, F904L
- Alloy steel: ASTM A182 F1, F5, F9, F11, F22, F91
- Special alloys: duplex, super duplex and nickel alloys for corrosive, sour and high-temperature service
Why Oil and Gas Projects Choose Rishabh Industries
- Complete size coverage: from instrument lines (15 NB) to large-bore piping (1200 NB)
- Multi-standard compliance: ASME, API 605, MSS SP-44 and AWWA in one source
- Wide material range: carbon, stainless, alloy, duplex, super duplex and nickel alloys
- Pressure-ready: Class 150 to Class 2500 and PN6 to PN64
- Custom manufacturing: flanges made to your drawings
- CNC machining: precise threads and faces for tight, dependable joints
- Surface protection options: suited to marine, offshore and corrosive environments
Coating and Surface Treatment
- Anti-rust paint
- Oil black paint
- Yellow transparent coating
- Zinc plated
- Cold and hot dip galvanized
Applications in Oil and Gas
- Upstream: wellhead and flowline connections
- Midstream: crude oil and natural gas pipelines
- Downstream: refineries and petrochemical plants
- Offshore platforms and marine piping
- Instrumentation, chemical injection and utility lines
- Fire-fighting and high-pressure auxiliary systems
Frequently Asked Questions
Q1: What is a threaded flange used for in oil and gas?
A1: It joins pipes without welding, which suits hazardous zones, instrumentation lines and high-pressure utility piping.
Q2: What size range does Rishabh Industries offer?
A2: Threaded flanges are available from 1/2″ (15 NB) to 48″ (1200 NB), plus custom sizes on request.
Q3: Which standards do your threaded flanges follow?
A3: ANSI B16.5, ANSI B16.47 Series A and B, MSS SP-44, ASA, API 605, AWWA and custom drawings.
Q4: What pressure ratings are available?
A4: Class 150, 300, 400, 600, 900, 1500 and 2500, plus PN6, PN10, PN16, PN25, PN40 and PN64.
Q5: Which materials can I choose?
A5: Carbon steel, low-temperature steel, stainless steel, alloy steel, duplex, super duplex and nickel alloys.
Send your flange drawings and get precision-machined, certified threaded flanges from Rishabh Industries, delivered on time.
Website: www.rishabhind.in
Email Id: info@rishabhind.in
Phone No: 99305 32430
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