Our Technologies

We choose best Quality raw materials to make Flanges from Worldwide Manufacturer of Steel, Alloy & Nickel Alloy. Material with Chemical, Physical, & Mechanical, Components, Ultrasonic  testes as per their International Norms and parameters range.

Duplex Steel Flanges

Research Results

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Research Results

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Human Resource:

A105 CS Flanges
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ASTM A 105 CS FLANGE
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ASME SA105 FLANGE
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ASTM A105N FLANGE
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CARBON STEEL DIN FLANGE
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CARBON STEEL FORGE FLANGE
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Introduction

Repute Steel & Engineering Co. is an ISO 9001 Certified Manufacturer and Stockiest of All Range of Duplex and Super Duplex Flanges are highly demanded in all major industries  worldwide. Duplex is a Ferritic austenitic Stainless Steel material which provide Good corrosion resistance along with high strength makes it suitable for Oil & Gas Equipment, Chemical & Pharma Industry, Nuclear and Atomic Reactors, and Process Industry Applications.

We are having a long experience of more than 3 decades of manufacturing Duplex and Super Duplex Flanges. We are among the leading manufacturer, Stock Holder, Supplier and Exporter of UNS 32205, F53 or UNS S32750, F55 or UNS S32760, F51 or UNS S31803 Flanges dimensions and Best Quality RAW material with the manufacturing process as per the International Standards of Flanges makes us very popular in Flange Industry. 

Our Carbon Steel Forged Plate Flanges passes the strict Quality Testing at the every step of manufacturing. We are having latest technology Flange manufacturing Forging, Machining, Milling, Testing to produce the highest standard of Quality Flanges.

ALLOY 1.4462 / DUPLEX UNS S31803 / F51 / UNS S32205 / F60

ALLOY 1.4501 / SUPER DUPLEX UNS S32760 / F55

ALLOY 1.4410 / SUPER DUPLEX UNS S32750 / F53 / 2507

Duplex Steel Flanges

Manufacturer & Exporter of Duplex Steel Flanges

Repute steel & Engineering co. is one stop solution for Best Quality Carbon Steel Flanges in all types of Facing & connection type. We are an ISO 9001 Certified manufacturer of A105 Carbon Steel Flanges, A105N, IS 2062 Gr. B flanges, Low Temperature Carbon Steel Flanges, LF1, LF2 etc. in RTJ Facing, Lap Joint Facing, Raised Face Facing, Flat Face Facing etc.

DUPLEX FLANGES, DUPLEX UNS 32750 FORGED FLANGES, DUPLEX 32760 FLANGES, DUPLEX PLATE FLANGES, DUPLEX UNS 32750 WNRF FLANGE, DUPLEX 2205 FLANGES, 2205 FORGED FLANGES MANUFACTURER, DUPLEX 2205 FLANGES EXPORTER, DUPLEX 2205 SORF FLANGE, DUPLEX DIN FLANGE, DUPLEX FLANGE STOCKIEST, DUPLEX BLIND FLANGE MANUFACTURER, DUPLEX UNS 32750 FLANGE EXPORTER, DUPLEX UNS S32760 FORGED FLANGE MANUFACTURER, DUPLEX B16.5 FLANGE, INDUSTRIAL DUPLEX UNS 31803 FLANGES, DUPLEX BLRF FLANGES, BLRF 150CLASS FLANGES, DUPLEX 300 CLASS FLANGES, DUPLEX RTJ FLANGE, WNRTJ FLANGES MANUFACTURER

CDuplex Flange:

Carbon Steel is the most common type of material used in almost every industry. Due to Low cost compare to Stainless Steel and Excellent properties, Carbon Steel Flanges are become first choice in general fabrication and industrial applications. There are some common Grades in Carbon Steel Forged Flanges due to present of different amount of Carbon element.

FORGED FLANGE GRADES: ASTM A694, ASTM A105, ASME SA 105, ASTM A105N, ASME SA 105N, MSS SP-44, Din 2533,

LTCS, LOW TEMPERATURE CARBON STEEL MATERIAL: ASTM A350, LF2, LF1, LF3, ASME SA 350 – LF1, LF2, LF3 ;

PLATE FLANGE GRADES: IS2062 Gr. A, IS2062 Gr. B, IS2062 Gr. C

A Steel Composition Containing Carbon Content up to 2.1% by weight is known as Carbon Steel Material.

As per AISI standard Carbon Steel Defined as:

  • Non presence of alloy element (minimum contain) required, as of Cr, Mo, Ni, Ti, Va and etc.
  • Specified minimum of Cu element shall not exceed 0.04%.
  • Presence of Maximum Mn element range 1.65%, Si 0.06%.

Result of increasing of Carbon element content, the material will become harder and stronger after Heat Treatment process. Otherwise it will become less ductile, and without Heat Treatment Higher Carbon will result Reducing of Weldability.

Low Carbon Steel or Mild Steel Flanges Specifications :

Carbon steel pipe flanges usually adopt mild steel or low carbon steel, as it includes small percentage of carbon, strong and tough but not readily tempered. Which with lower cost and material could be used for many applications.

  • Low carbon steel Material: Carbon element content at 0.005% to 0.3%.
  • Medium carbon steel Material: Carbon element Content 0.3 to 0.8%.
  • High carbon steel Material: 0.8-2.0% of carbon element present
  • Ultra high carbon steel Material: Present of Carbon element Range 1.25% to 2.0%.

ASTM A105N (SA105N) Carbon Steel Pipe Flanges

            ASTM A105N / ASTM A105 is Forged Carbon Steel Material, commonly used for Carbon Steel Forged Flanges.

Carbon Steel A105 / A105N is used in all industries. Carbon Steel Flanges are Durable. Low Cost, can used in High Pressure, Difficult to Brake, Easy maintenance and can be used to joint with A106, A53, API 5L, carbon Steel, Mild Steel, Boiler Quality, Alloy Steel Pipes in connection.

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Manufacturer, Stock Holder, Supplier, Exporter of All types of Flanges. Stainless Steel Flanges, Carbon Steel Flanges, Alloy Steel Flanges, Duplex Flanges, Super Duplex Flanges, Inconel Flanges, Monel Flanges, Hastelloy Flanges, SMO Flanges, Incoloy Flanges, Nickel Alloy Flanges, Titanium Flanges, Alloy 20 Flanges, 17-4 Ph Flanges, 15-5Ph Flanges, Copper, Flanges, Brass Flanges, Cupro Nickel Flanges, Mild Steel Flanges, Low Carbon Alloy Flanges, EN Flanges, Lead Flanges, Gun Metal Flanges, Phosphorus Bronze Flanges, MS Flanges, SS Flanges, CS Flanges

Various Types of Duplex Steel Flanges.

flange forged
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CS Forged Flanges

Stockholder and Exporter of all types of Forged Flanges in various Carbon Steel Grades.

cs WNRF flange

CS 105 flanges

SA105 Forged Carbon Steel Weld Neck, SlipOn, Blind, Threaded, Socketweld, Flanges

blind flange BLRF

SA 105 Forged CS Flange

Manufacturer of SA105 flanges in Various Pressure Class such as 150#, 300#, 400#, 600#, 900#, 1500# etc.

ms flange manufacturer

MS Flange IS2062 Gr.B

Expert in Manufacturing of IS2062 Gr. B Plate Flanges, for various equipment and Industries.

alloy flange

DIN FLANGES

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flange exporter India

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steel flange forged

Hastelloy Flanges

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BLIND FLANGE MANUFACTURER

SMO Flanges

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CS SLIP ON FLANGE

Alloy 20 Flanges

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CS BLIND FLANGE

Titanium Flanges

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cs WNRF flange

Incoloy Flanges

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carbon steel socket weld flange

Aluminium Flanges

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threaded flange

Copper Flanges

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reducing flange

Brass Flanges

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Flat Flange

Lead Flanges

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carbon steel flange

Zinc Flanges

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Best Quality duplex steel Flanges

Get the lowest Quotation with best Shipping terms for Steel & Duplex flanges click here to ..
BEst quality

Pipe Lines, Water Transportation Technologies, Petrochemical Refineries, Oil & Gas Industry, Food & Dairy Industry, Nuclear, Energy & Power Industry, Coal & Steel Plants, Fertilizer Industry, Chemical Industry, Mechanical Equipments,  

Application Industry

Duplex material FLANGES are widely used in all industry. 

Just sit right back and you’ll hear a tale a tale of a fateful trip that started from this tropic port aboard this tiny ship all of them had hair of gold like their mother the youngest one in curls. Space.

Just sit right back and you’ll hear a tale a tale of a fateful trip that started from this tropic port aboard this tiny ship all of them had hair of gold like their mother the youngest one in curls. Space.

Just sit right back and you’ll hear a tale a tale of a fateful trip that started from this tropic port aboard this tiny ship all of them had hair of gold like their mother the youngest one in curls. Space.

Just sit right back and you’ll hear a tale a tale of a fateful trip that started from this tropic port aboard this tiny ship all of them had hair of gold like their mother the youngest one in curls. Space.

Duplex Steel Flanges Specifications :-

ASME B16.5 Duplex Steel Flanges Size Chart

: 1/2″ (15 NB) to 60″ (1500NB) DN10~DN5000

Duplex Steel Flanges Standards

: ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ASME Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ASME B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092

Duplex Steel Flanges Pressure Rating ANSI: Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Duplex Steel Flanges Pressure standard in DIN: 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
JIS Flanges Pressure standard: 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
UNI Flanges Pressure standard: 6Bar 10Bar 16Bar 25Bar 40Bar
EN Flanges Pressure standard: 6Bar 10Bar 16Bar 25Bar 40Bar
Coating on Carbon Steel Flanges: Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Most common types of Duplex Steel Flanges: Forged / Threaded / Screwed / Plate
Test Certificates of Duplex Steel Flanges: EN 10204/3.1B
: Raw Materials Certificate
: 100% Radiography Test Report
: Third Party Inspection Report, etc.
Production technique: Forged, Heat treated and machined
Duplex Steel Flange Facing 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 Duplex Steel Flanges: As per your drawing
: AS, ANSI, BS, DIN, JIS, & AWWA
: 15 NB (1/2″) to 1500 NB (60″) in all Facing & Connection types
Test: Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, Ultrasonic flaw detector, Magnetic particle detector
Equipment: Press machine, Bending machine, Pushing Machine, electric beveling machine, Sand-blasting machine etc.
Origin: India / West Europe / Japan / USA / Korean / Italy
Manufacturer of 

: ASME DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.

: Carbon Steel Flanges: -BS Flange, EN Flange, API 6A Flanges, ASME Flanges, ASME Flanges, DIN Flanges, EN1092-1 Flanges, UNI Flanges, JIS/ KS Flanges, BS4504 Flanges, GB Flanges, AWWA C207 Flanges, GOST Flanges, PSI Flanges
: B.S: BS4504 , BS3293, BS1560, BS10
: AS 2129: Table D; Table E; Table H, Table F
: ASME B16.5, ASME B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
: ASME : ASME B16.5, ASME B16.47(API605), MSS SP44, ASME B16.36, ASME B16.48
: ASME B16.5, ASME B16.47, MSS SP44, ASME B16.36, ASME B16.48
: American standard (ANSI)
: German (DIN)
: British standard (BS) Carbon Steel Flanges, France (AFNOR) Carbon Steel Flanges, Japan (JIS) Carbon Steel Flanges, India (IS) Carbon Steel Flanges, ASME Carbon Steel Flanges etc. 
: 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 Carbon Steel Flanges
: The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276

Duplex Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

Other Materials of Flanges

BROCHURE

Click here to get the BROCHURE of Flanges Dimension, Materials details

Flange Types

Repute Steel & Engineering co. is one of Best Manufacturer, Stockiest, Supplier and Biggest Exporter of Flanges. Being ISO 9001 Certified Repute Steel Focus on the Quality of the Product and Material. Flanges are widely used in all major Industrial Activities including Oil & Gas Industries, Petrochemical Refineries, Water Pipe Lines, Nuclear Reactors, Food Industry, Power Production Companies, Chemical Process Equipments, Heat Exchangers, Chemical & Fertilizers Companies, Instrumental industries, General Fabrication applications etc. We are among the largest Producer of Metal Flanges in India.

Best Quality Forge Flange Exporter

Repute Steel is engage in fulfill huge demand of Flanges along with Accurate Dimensions, highest Quality Standard as per International Material Specifications. We are Expert in Manufacturing of WELD NECK Flange, SLIP ON Flanges, BLIND Flanges, SOCKETWELD Flanges, SCREWED Flanges, THREADED Flanges, LAP JOINT Flanges, RTJ Flanges, FLAT Flanges, WELDO – NIPPO Flanges, SPECTACLE Flanges, HIGH HUB Flanges, LONG WELD NECK Flanges, RAISED FACE Flanges, PLATE Flanges.

flange manufacturing process

Our Advantages

Best Quality Metals

Flange materials : Stainless Steel, Carbon Steel, Duplex, Super Duplex, Mild Steel, Inconel, Monel, Hastelloy, SMO, Titanium, Bronze, Copper, Brass, Aluminium, Lead, Nickel Alloys etc.

Accurate Dimension

Dimensions of Flanges as per ANSI, ASME, DIN, JIS, AWWA, ASA, API 605, BS,  ANSI B16.47 SERIES A & B, MSS SP44, ASME / ANSI B16.5, ASME B16.48 / API 590, ANSI B16.10 / B 16.36,  API 6A etc.

All types of Flanges

Slip On Flange (SORF) (SOFF), Blind Flanges (BLRF) (BLFF), Weld Neck Flange (WNRF), Long Weld Neck (LWNRF), Threaded, Socket Weld (SW), Lap Joint (LJ), Ring Type Joint (RTJ), Flat Flange etc.

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