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Carbon steel flanges

Carbon steel flanges

Royal Business is a trusted distributor and supplier of Carbon Steel Flanges, offering durable and reliable solutions for a wide range of industrial piping applications. Carbon steel flanges are valued for their strength, toughness, and cost-effectiveness, making them suitable for demanding environments.

We supply various types of carbon steel flanges including Blind, Slip-On, Weld Neck, Plate, and Forged Flanges, sourced from reputed manufacturers and supplied as per applicable standards. Known for good ductility, wear resistance, and performance under pressure and low-temperature conditions, these flanges are widely used in industries such as oil & gas, petrochemicals, construction, engineering, fuel pipelines, and water distribution systems. With consistent quality and dependable availability, Royal Business serves as a reliable source for carbon steel flange requirements

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Carbon Steel Flanges Specifications

Specifications ASTM A105 / ASME SA105, A105N
ASME B16.5 Carbon Steel Flanges size range 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Carbon Steel Flanges Standards ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flanges.
Carbon Steel Flanges Standard ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Carbon Steel Flanges Standard DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
Carbon Steel Flanges Standard JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
Carbon Steel Flanges Standard UNI 6Bar 10Bar 16Bar 25Bar 40Bar
Carbon Steel Flanges Standard EN 6Bar 10Bar 16Bar 25Bar 40Bar
Main Types Forged / Threaded / Screwed / Plate
Flange supporting material Gasket, Ring Joint, Flange Bolts
Carbon Steel Pipe Flanges Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Most common types of Carbon Steel Flanges
  • Weld Neck Ring Flange (WNRF), Carbon Steel Flanges
  • Slip-On Ring Flange (SORF), Carbon Steel Flanges
  • Blind Ring Flange (BLRF), Carbon Steel Flanges
  • Socket Weld Ring Flange (SWRF), Carbon Steel Flanges
  • Threaded Ring Flange, Carbon Steel Flanges
  • Lap Joint Ring Flange (LJRF), Carbon Steel Flanges
  • Ring Type Joint Flange (RTJF), Carbon Steel Flanges
Production technique
  • Forged, Heat treated and machined
Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, , Groove
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations

Carbon Steel Flanges Threaded Flanges, Socketweld Flanges, Slip-On Flanges, Blind Flanges, Weld Neck Flanges
Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Origin Indian / West Europe / Japan / USA / Korean
Specialized manufacturer of
  • Rtj Flanges
  • Pn16 Flanges
  • DIN 2566 pn16
  • DIN 2566 en 1092 1
  • DIN 2566 pn10
  • Carbon Steel Large Diameter Flanges
  • Carbon Steel Sorf Flanges
  • Carbon Steel Blind Flanges
  • Carbon Steel Table Flanges
  • Carbon Steel Weld Neck Flanges
  • Carbon Steel Threaded Flanges
  • Carbon Steel Slip-On Flanges
  • Carbon Steel Socketweld Flanges
  • Carbon Steel Plate Flanges
  • Carbon Steel Lap Joint Flanges
  • Carbon Steel Loose Flanges
  • Carbon Steel Orifice Flanges
  • Carbon Steel AS 4087 Water Flanges
Carbon Steel Flanges Standard

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

  • B.S: BS4504 , BS3293, BS1560, BS10
  • AS 2129: Table D; Table E; Table H
  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • American standard (ANSI)
  • German (DIN)
  • British standard (BS)
  • Any other specilised flanges
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203;UNI2276
Key markets and industries for Carbon Steel Flanges
  • Bitumen upgraders.
  • Heavy oil refineries.
  • Nuclear power (mostly seamless).
  • Petrochemicals and acids.
Export to Ireland, Singapore, Indonesia, Ukraine, Saudi Arabia, Spain, Canada, USA, Brazil, Thailand, Korea, Iran, India, Egypt, Oman, Dubai, Peru, etc
Carbon Steel Flanges Application
  • To Connect Pipe & Tubes in Petroleum, Power, Chemical, Construction, Gas, Metallurgy, Shipbuilding etc
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

Carbon Steel Flanges Standards / Types And Pressure Class

ASME/ANSI B 16.5 Threaded Flange, Ring Type Joint Flange, Blind Flange, Welding Neck Flange, Slip on Flange,High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47 Blind Flange [Series A & B], Welding Neck Flange
PRESSURE CLASS 75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36 Slip on Flange, Welding Neck Flange, Threaded Flange
PRESSURE CLASS 300, 400, 600, 900, 1500, 2500
DIN FLANGES DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
PRESSURE CLASS PN 6 TO PN 100
BS 4504 SEC 3.1 Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange
PRESSURE CLASS PN 2.5 TO PN 40
BS 4504[PART 1] Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded
PRESSURE CLASS PN 2.5 TO PN 400
BS 1560 BOSS Blind Flange, Screwed Boss Flange, Lapped FlangeWelding Neck Flange, Socket Welding Flange, Slip-On Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
BS10 Blind Flange, Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange
TABLE D, E, F, H