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Industrial Flanges


The company specializes in supplying and distributing high pressure, large diameter, high yield, and specialty flanges. Our flanges can be manufactured as Slip-On, Weld Neck, Blind, Lap Joint, Threaded, Socket Weld, Reducing, Orifice and other less common face types like Large Groove or Female Faces are also available.


We are well equipped to meet customer requirements.  In conjunction with our correspondence companies, a massive inventory of our flanges is in stock and ready to ship – allowing us to meet tight deliveries with quality product and customer service.


Supplying /Distribution  of Flanges

Types                                               :   Slip-On Flanges, Weld Neck Flanges, Blind Flanges, Lap Joint Flanges,Threaded                                                                                      Flanges, Socket Weld Flanges, Reducing Flanges  and Orifice Flanges.

Sizes                                                 :   1/2" ~ 72" (larger size available upon request) - All Wall Thicknesses & Schedules.

Pressure (ASTM)                          :   150#, 300#, 600#, 900#, 1500#, 2500# 

Pressure (DIN/EN)                      :  PN2.5, PN6,PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320,PN400

Standards                                      :  ANSI /ASME /AWWA /API /MSS /DIN /EN /BS /JIS/KS /GB /GOST and UNI 

Coating/Surface Treatment  :  Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip                                                                                     Galvanized.

Our flanges comply to NACE MR0175, NACE MR0103, ISO 15156-2



The most common materials for pipe flanges (forged grades) are: ASTM A105 (carbon steel high temperature to match A53/A106/API 5L pipes), A350 Grades LF1/2/3 (carbon steel low temperature to match A333 pipes), A694 Grades F42 to F80 (high yield carbon steel to match API 5L pipe grades), ASTM A182 Grades F5 to F91 (alloy steel flanges to match A335 pipes), A182 Grade F304/316 (stainless steel flanges to match A312 SS pipes), A182 Gr. F44/F51/F53/F55 (duplex and super duplex to match A790/A928 pipes) and various nickel alloy grades (Inconel, Incoloy, Hastelloy, Monel).


  • ASTM A105 (high-temperature carbon steel) to match A53, A106, API 5L carbon steel pipes

  • ASTM A350 LF1, LF2, LF3 (low-temperature carbon steel) to match ASTM A333 pipes

  • ASTM A694 F42, F52, F60, F65 (high-yield carbon steel to match API 5L X42, X52, X60, and X65 steel pipes.

  • ASTM A694 F46, F48, F50,F56, 70 (High -yield carbon steel flanges)

  • CSA Z245.12 (359 CAT2 - 483 CAT2)


The key elements that differentiate stainless steel materials for flanges, compared to other grades, are the Nickel (Ni), Chrome (Cr), and Molybdenum content (Mo).

  • ASTM A182 F304, F304H, F304L, F304N, F304LN, F309H, F310, F310H, F31MoLN, F316, F316H, F316L, F316LN, F316Ti, F317, F317L, F321, F321H, F347, F347H, F348, F348H

Recommended service for stainless steel flange materials:


Material                                  Material Group                                                     Recommended Service  

A182-F304                           18% Cr, 8% Ni Stainless Steel                        Corrosive services and atmospheres from                                                                                                                         -450°F to 1000°F (-268°C to 537°C)

A182-F316                           18% Cr, 8% Ni, 2% Mo Stainless Steel        High resistance to corrosion from -450°F to                                                                                                 1000°F (-268°C to 537°C).



Alloy flange materials (chrome-moly) have higher chrome and molybdenum content than carbon steel flanges. Alloy steel flange materials suit high temperature and high-pressure applications and improved resistance to corrosion when compared to regular carbon steel flanges grades.

ASTM A182 alloy flanges are extremely ductile, strong and tough and easy to weld and offer oxidation and scaling resistance. These grades match with Alloy Steel Pipe A335 Gr. P5, P9, P11, P22, P91.

Recommended service for alloy steel flange material grades ASTM A182:

Material             Material Group                                                                      Recommended Service         

A182 F1             C-1/2 Mo Low Alloy Steel                                                  Non-corrosive applications Including water, oil,  and                                                                                                                                               gases  at temperatures between -29 ~593ºC* (Not                                                                                                                                                     prolonged use > 470ºC).

A182 F2             0.75% Ni; Mo; 0.75% Cr Low Alloy Steel                      Non-corrosive applications including water, oil and gases                                                                                                                                     at  F2:-29ºC ~ 538ºC, WC5: -29ºC ~ 575ºC

A182 F11         1/4% Chrome; 1/2% Moly Low Alloy Steel                  Non-corrosive applications including water, oiland gases                                                                                                                                     at temperatures between -30ºC (-20ºF) and +593ºC                                                                                                                                                 (+1100ºF).

A182 F222      1/4% Chrome Low Alloy Steel                                          Non-corrosive applications including water, oil and gases                                                                                                                                     at temperatures between  -30ºC (-20ºF) and +593ºC                                                                                                                                                 (+1100ºF).

A182 F5/F5a  5% Chrome; 1/2% Moly, Medium Alloy Steel            Mild corrosive or erosive applications as well as non-                                                                                                                                              corrosive applications at temperatures between -30ºC                                                                                                                                          (-20ºF) and +650ºC (+1200ºF).

A182 F9            9% Chrome; 1% Moly, Medium Alloy Steel                Mild corrosive or erosive applications as well as                                                                                                                                                          non- corrosive applications  at temperatures between                                                                                                                                            -30ºC (-20ºF) and +650ºC (+1200ºF).

A182 F91         9% Chrome; 1% Moly; V-N, Medium Alloy Steel      Mild corrosive or erosive applications as well as non-                                                                                                                                                corrosive applications at  temperatures between -30ºC                                                                                                                                          (-20ºF) and +650ºC (+1200ºF).



Duplex steel (ASTM A182 2205) is an extremely corrosion resistant, work hardenable stainless steel, whose microstructure consists of a mixture of austenite and ferrite phases.

The most widely used grade for Duplex flange is 2205, due to its superior resistance to corrosion and mechanical strength. The designation “2205” is related to the chemical composition of this material, which features 22% of chromium and 5% of nickel. Super Duplex flange show an even superior strength and a higher corrosion resistance than standard duplex steel (and austenitic grades, of course).

The main difference between a duplex and a super duplex grade is the addition of copper to the alloy (in addition to increased amounts of Chromium, Moly, and Nickel). The addition of copper gives Super Duplex Stainless Steel an improved resistance to hot chlorides and strong reducing acids, like sulphuric acid, compared to a standard Duplex grade.

Whilst UNS S31803, UNS 32205 (duplex) and UNS S32750, UNS S32760 are standard designations, most manufacturers of superalloys attribute proprietary names to these steels (example UR52N+ is a Usinor/Arcelor Super Duplex steel, Ferralium, Zeron, Sandvik SAF 2205 22Cr, etc).


Inconel® Flanges

Inconel® is a family of austenite nickel-chromium-based superalloys. Inconel® alloys are oxidation and corrosion resistant materials well suited for service in extreme environments subjected to pressure and heat. When heated, Inconel® forms a thick, stable, passivating oxide layer protecting the surface from further attack. Inconel retains strength over a wide temperature range, attractive for high temperature applications where aluminum and steel would succumb to creep as a result of thermally induced crystal vacancies. Inconel’s high temperature strength is developed by solid solution strengthening or precipitation strengthening, depending on the alloy.

We offer flanges in the following grades:

  • ALLOY 600 N06600 B366 (REF), B/SB 564, AMS 5665 B/SB 166 

  • ALLOY 601 N06601 AMS 5715 B/SB 166

  • ALLOY 625 N06625 B366 (REF), B/SB 564, AMS 5666 B/SB 446

Incoloy® Flanges

Incoloy® refers to a range of superalloys produced by the Special Metals Corporation group of companies. They are mostly nickel-based, and designed for excellent corrosion resistance as well as strength at high temperatures; there are specific alloys for resistance to particular chemical attacks (e.g. alloy 020 is designed to be resistant to sulphuric acid, DS to be used in heat-treating furnaces with reactive atmospheres and many heat cycles)

We offer flanges in the following grades:

  • ALLOY 800 N08800 B 366 (REF), B/SB 564, AMS 5766 B/SB 408

  • ALLOY 800H N08810 B 366 (REF), B/SB 564 B/SB 408

  • ALLOY 800HT N08811 B 366 (REF), B/SB 564 B/SB 408

  • ALLOY 825 N08825 B 366 (REF), B/SB 564 B/SB 425

  • ALLOY C20 (F20) N08020 A 182, B 366, B/SB 462, B/SB 564 B/SB 472, B/SB 473

  • ALLOY 330 N08330 B 366 (REF), AMS 5716 B/SB 511, B/SB 512

Monel® and Copper Nickel Alloy Flanges

Monel is a group of nickel alloys, primarily composed of nickel (up to 67%) and copper, with small amounts of iron, manganese, carbon, and silicon. Stronger than pure nickel, Monel alloys are resistant to corrosion by many agents, including rapidly flowing seawater. They can be fabricated readily by hot- and cold-working, machining, and welding. Monel alloy 400 is a binary alloy of the same proportions of nickel and copper as is found naturally in the nickel ore and is therefore considered a puritan alloy.

It is a very expensive alloy, with cost ranging from 5 to 10 times the cost of copper and nickel, hence its use is limited to those applications where it cannot be replaced with cheaper alternatives. Compared to carbon steel, piping in monel is more than 3 times as expensive.

We offer flanges in the following grades:

  • ALLOY 400 N04400 B366, B/SB 564, QQ-N-281, MIL-F-23509 B/SB 164

  • 70/30 CUNI C71500 MIL-C-15726, MIL-C-24679 B/SB 151

  • 90/10 CU-NI C70600 MIL-C-15726, MIL-C-24679 B/SB 151

Hastelloy® Flanges

The Corrosion-Resistant HASTELLOY® alloys are widely used by the chemical processing industries. The need for reliable performance leads to their acceptance and growth in the areas of energy, health and environmental, oil and gas, pharmaceutical and flue gas desulfurization industries. The attributes of HASTELLOY® alloys include high resistance to uniform attack, outstanding localized corrosion resistance, excellent stress corrosion cracking resistance, and ease of welding and fabrication.

B-3® alloy possesses outstanding resistance to non-oxidizing acids, such as hydrochloric acid and sulfuric acid. The advantages of B-3® alloy over previous B-family alloys are enhanced thermal stability and improved fabrication characteristics.

The most versatile of the HASTELLOY® alloys are the “C-type” alloys. C-2000® alloy combines outstanding resistance to oxidizing media with superior resistance to non-oxidizing environments and represents a true performance breakthrough for chemical process equipment applications.  C-22® alloy is particularly resistant to pitting and crevice corrosion; it has been used extensively to protect against the most corrosive FGD systems and the most sophisticated pharmaceutical reaction vessels.

G-30® alloy has been very successful as phosphoric acid heat exchanger tubing and for other process components in the fertilizer industry. G-35® alloy was designed as an improved version of G-30 alloy in these applications.  The high chromium content of both of these alloys make them the premier choices for strong oxidizing solutions and mixed acid pickling services.

We offer flanges in the following grades:

  • HAYNES 230 – 4 N06230 B/SB 564, AMS 5891 B/SB 572

  • HAYNES 242 – 4 N10242 B564, HAYNES PS-6085-2 B/SB 573

  • 7-MO PLUS (F52) – 3S32950 A/SA182 A/SA 479

  • HASTELLOY-B3 – 4N10675 B462, B366 (REF), B/SB 564 B/SB 335

  • HASTELLOY-C22 – 4N06022 B462, B366 (REF), B/SB 564 B/SB 574

  • HASTELLOY-C276 – 4N10276 B/SB462, B/SB 564, AMS 5750 B/SB 574

  • HAST C-2000 – 4N06200 B/SB462, B/SB 564 B/SB 574

  • HASTELLOY-G30 – 4N06030 B/SB 462, B366 B/SB 581


Hastelloy® Family of Corrosion-Resistant Alloys

HASTELLOY® B-3® alloy           

Same excellent resistance to hydrochloric acid and other strongly reducing chemicals as B-2 alloy, but with significantly better thermal stability, fabricability and stress corrosion cracking resistance.

HASTELLOY® C-22® alloy                         

Better overall corrosion resistance in oxidizing corrosives than C-4, C-  276 and 625 alloys. Outstanding resistance to localized corrosion and  excellent resistance to stress corrosion cracking. Best alloy to use as universal weld filler metal to resist corrosion of weldments.

HASTELLOY® C-276 alloy                       Versatile, corrosion resistant alloy. Very good resistance to reducing, and                                                                                                     mildly oxidizing corrosives. Excellent stress corrosion cracking                                                                                                                           resistance with very good resistance to localized attack.

HASTELLOY® C-2000® alloy                 Most versatile, corrosion resistant alloy with excellent resistance to                                                                                                                   uniform corrosion in oxidizing or reducing environments. Excellent                                                                                                                     resistance to stress corrosion cracking and superior resistance to                                                                                                                   localized corrosion as compared to C-276 alloy.

HASTELLOY® G-30® alloy                      Many advantages over other metallic and non-metallic materials in                                                                                                                 handling phosphoric acid, sulfuric acid, nitric acid, fluoride environments                                                                                                     and oxidizing acid mixtures.

HAYNES® 242® alloy.                               Age-hardenable alloy with excellent strength to 1300°F (705°C), low                                                                                                                 thermal expansion characteristics, good oxidation resistance to 1500°F                                                                                                       (815°C) and excellent fabricability. Also has excellent resistance to high-                                                                                                       temperature fluorine and fluoride-bearing environments. Used in gas                                                                                                             turbine seal rings, containment containment structures and high-                                                                                                                     strength fasteners. Also used in fluoropolymer plastics production and                                                                                                           CPI applications.


Titanium alloys are known to be light weight alloys with excellent corrosion resistance, very high tensile strength and toughness.

Grade 2 and 5  the most widely used of all the titanium grades. It is a medium to high strength general-purpose alloy. It is also referred to as an alpha-beta alloy. This alloy is fully heat treatable in sections measuring up to 15mm. It can be heated up to 400°C (750°F), and has good tensile properties at room temperature, creep resistance up to 325°C and very good fatigue strength. It is also known to be highly resistant to general corrosion in sea water. We also offer grade 12, which retains superior strength at higher temperatures and is known for its malleability and weldability. Titanium is often used in applications requiring high temperature and pressure service but with reduced weight.

We offer flanges in the following grades:

  • Titanium Gr, 2

  • Titanium Gr. 5

  • Titanium Gr. 12







Pipe Fittings


The company manufactures, supplies and distributes a wide range of fittings, such as elbows, tees, reducers, caps, bends and many others from 1/2" to 120" diameter in all material grades, according to international standards and clients' requirements.


The target markets can be divided into up/mid/downstream, which includes onshore and offshore/subsea plants, oil & gas pipelines, refineries, and power generation such as nuclear and thermal power plants. The company manages the whole cycle of production, distribution and after-sales services in all these markets. EPC companies represent the largest part of its capacity. Close co-operation with clients gives the company the opportunity to develop the market and the products in line with trends in the field of energy.

Standard Fittings

Special Fittings

Special Products

Special Products as per customer drawings.

Materials used and related International Standards

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