Industrial Flanges Supplier in Qatar

Industrial Flanges Suppliers

ASME B16.5 Industrial Flanges: Dimensions | Specifications | Material Grade | Standards | About Industrial Flange | All Product Types

Nutech Overseas is a leading manufacturer and exporter of industrial flanges in Qatar, supplying high-quality piping components for LNG, oil & gas, petrochemical, and infrastructure projects. Our flanges are engineered in compliance with international standards such as ASME B16.5, ASME B16.47, EN 1092-1, DIN, and ISO, ensuring superior durability, corrosion resistance, and performance in demanding industrial environments. With a strong global export network and efficient logistics, we support contractors, EPC companies, and industrial clients across Qatar.

Product Overview

Industrial flanges are essential components used to connect pipes, valves, and equipment in piping systems. They provide a reliable and leak-proof connection that can withstand high pressure and temperature conditions. In large-scale industrial operations such as LNG plants and petrochemical facilities, flanges play a critical role in maintaining system integrity and operational efficiency. Our flanges are available in a wide range of sizes, pressure ratings, and materials to meet project-specific requirements.

Types of Flanges We Supply

We supply a complete range of industrial flanges including Industrial Flanges, Weld Neck Flanges, Blind Flanges, Socket Weld Flanges, Threaded Flanges, Ring Type Joint (RTJ) Flanges, Lap Joint Flanges, and Spectacle Blind Flanges. Each type is designed for specific applications, from low-pressure systems to high-pressure and high-temperature environments. Weld Neck flanges provide excellent stress distribution, while RTJ flanges are ideal for critical sealing applications.

Industrial Applications in Qatar

In Qatar, industrial flanges are widely used in LNG production facilities, offshore oil platforms, gas processing plants, and pipeline networks. They are also essential in infrastructure and EPC projects, including desalination plants and power generation units. The ability of flanges to handle extreme conditions makes them indispensable for Qatar’s energy sector.

Materials and Specifications

Our flanges are manufactured using premium materials such as Carbon Steel (ASTM A105, A350 LF2), Stainless Steel (F304, F316), Alloy Steel (F11, F22), Duplex and Super Duplex Steel, and nickel-based alloys like Inconel and Hastelloy. These materials ensure excellent mechanical strength and corrosion resistance.

International Standards

All products are manufactured in accordance with ASME B16.5, ASME B16.47, EN 1092-1, DIN, ISO, and JIS standards, ensuring global compatibility and compliance.

Export strictly to Qatar

We are a trusted exporter of industrial flanges to Qatar, providing complete documentation including mill test certificates, inspection reports, and quality certifications. Our logistics ensure timely delivery for large-scale projects.

Specialized Flanges for the LNG Sector

Qatar is a global leader in Liquefied Natural Gas (LNG) production. To support this sector, we manufacture specialized cryogenic industrial flanges. These flanges, typically made from austenitic stainless steels (such as 304L and 316L) and specialized alloys, retain their toughness and ductility at extremely low temperatures (-196°C), preventing catastrophic brittle fracture in LNG processing and storage facilities.

Precision Machining for Critical Sealing

In high-pressure gas applications common in Qatar, the integrity of the flange seal is paramount. We offer highly precise Ring Type Joint (RTJ) flanges that accommodate metallic ring gaskets. The machining of the deep grooves is done with microscopic precision to ensure a perfect metal-to-metal seal, capable of withstanding the immense pressures of gas extraction and transport pipelines.

EPC Project Support and Custom Fabrication

We work closely with major Engineering, Procurement, and Construction (EPC) firms operating in Qatar. Beyond standard ASME flanges, we provide custom forged components and non-standard flange designs based on specific engineering drawings. This includes long weld neck flanges, heavy wall barrel flanges, and specialized transitional flanges required for complex pressure vessel nozzles and heat exchangers.

Commitment to Sustainability and HSE

Aligning with Qatar's National Vision, we are committed to sustainable manufacturing practices. Our forging processes are optimized for energy efficiency, and all scrap metal is heavily recycled. Furthermore, our health, safety, and environmental (HSE) protocols ensure that our manufacturing exceeds international standards, minimizing our carbon footprint while producing the vital components needed for Qatar's infrastructure.

For complete technical details, including dimensions, pressure rating classes, weight charts, sizes, tolerances, and material specifications of our ANSI B16.5 Industrial Flanges, please download the full Catalog PDF below.

Industrial Flanges Available in Class 150 / 300 / 600 – Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) – Sizes ½″ to 48″

Technical Specifications of Industrial Flanges

Specification Details
Type Slip-On Flange (SO), Raised Face (SORF), Flat Face (SOFF), RTJ (Ring Type Joint)
Design Standard ASME B16.5, ANSI B16.5, ASME B16.47 Series A & B, MSS-SP-44, BS 4504, EN 1092-1, DIN
Size Range ½″ NB to 48″ NB (DN15 to DN1200)
Pressure Ratings Class 150, 300, 600, 900, 1500, 2500 (PN6 to PN400 in EN standard)
Face Type Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Flange Thickness As per ASME B16.5 / B16.47 or EN 1092-1 dimensional standards and pressure class
Bore & Hub Design Slip-on design with pipe inserted before welding; beveled or smooth bore as per requirement
Welding Type Fillet weld on both inner and outer side of pipe-to-flange connection
Surface Finish Stock finish (3.2–6.3 μm), Smooth finish, Serrated concentric or spiral finish as per RF/FF
Gasket Compatibility Spiral wound, Ring gaskets, Full face or raised face gaskets based on flange type
Drilling Template Conforms to ANSI B16.5 or other applicable flange drilling standards
Coating / Protection Rust preventive oil, Black paint, Yellow transparent varnish, Hot-dip galvanized (on request)
Dimensional Tolerances As per ASME B16.5, EN 1092-1, MSS-SP-44 or client drawing/specifications
Testing & Inspection Dimensional check, Hydrostatic test, PMI, Visual inspection, NDT (UT/MPI as required)
Certification EN 10204 Type 3.1 / 3.2, IBR Approval, ISO 9001, PED 2014/68/EU, NACE MR0175 / ISO 15156, ISO 9001
Application Industries Oil & Gas, Petrochemical, Power Generation, Water Treatment, Pulp & Paper, Shipbuilding, HVAC, Offshore
Origin Made in India (by Nutech Overseas)
Export Network USA, Europe, and Middle East

Complete Material Grade Chart - Class 150 Industrial Flange

Material Category Slip-On Flange Grades
Stainless Steel Slip-On Flange ASTM A182 F304 / F304L / F304H, F316 / F316L / F316Ti, F310, F309S, F317 / F317L, F321 / F321H, F347 / F347H, F904L, ASTM A351 CF3 / CF3M / CF8 / CF8M / CF8C, DIN 1.4301, 1.4306, 1.4307, 1.4311, 1.4401, 1.4404, 1.4408, 1.4409, 1.4541, 1.4571, 1.4550, 1.4435, 1.4539
Duplex Steel Slip-On Flange ASTM A182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803 / S32205
Super Duplex Steel Slip-On Flange ASTM A182 F53 / F55 / F57 / F59 / F60 / F61, UNS S32750 / S32760
Carbon Steel Slip-On Flange ASTM A105 / A105N, ASTM A350 LF2, ASTM A694 F52 / F56 / F60 / F65 / F70 / F80, ASTM A216 WCB, DIN 1.0460 / 1.0402 / 1.0619, Die Steel, Mild Steel
Alloy Steel Slip-On Flange ASTM A182 F5 / F9 / F11 / F12 / F22 / F91, AISI 4130 / 4140
Nickel Alloy Slip-On Flange Nickel 200 / 201, ASTM B564
Monel Slip-On Flange Monel 400 (UNS N04400), Monel K500 (UNS N05500), ASTM B564
Inconel Slip-On Flange Inconel 600 / 601 / 625 / 690 / 718 / 783 / X750, ASTM B564
Incoloy Slip-On Flange Incoloy 800 / 800H / 800HT (UNS N08800), Incoloy 825 (UNS N08825), Incoloy 925, ASTM B564
Hastelloy Slip-On Flange Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X, ASTM B564
Alloy 20 Slip-On Flange Alloy 20 / 20Cb-3, Carpenter® 20, ASTM B462
254 SMO Slip-On Flange SMO 254 / 6Mo, UNS S31254, DIN 1.4547, ASTM A182
Copper Nickel Slip-On Flange Copper Nickel 90/10 (C70600), 70/30 (C71500), UNS C71640, ASTM B61 / B62 / B151 / B152
Copper Slip-On Flange TP1, TP2, T1, T2, C10100–C12300, C14200–C17200, C21000–C71520, including C10930, C11000, C11400, C12000, C12200, C26000, C28000, C33000, C44300, C70600, etc.
Brass Slip-On Flange Grades 3602, 2604, H59, H62, etc.
Aluminium Slip-On Flange Aluminium Grades 5052, 6061, 6063, 2017, 7075, etc.
Titanium Slip-On Flange ASTM B381 Gr.1 / Gr.2 / Gr.4 / Gr.5 / Gr.7, UNS R50250 / R50400 / R50550 / R50700 / R52400 / R53400 / R56320 / R56400
Other Special Grades Al6XN, Tin Bronze, Aluminium Bronze, Lead Bronze, Nimonic 75 / 80A / 90

International Flange Standards We Manufacture & Supply

What are Industrial Flanges and how are they used in Qatar?

Industrial flanges are piping components used to connect pipes, valves, and equipment, ensuring a strong and leak-proof joint.

Do you supply Industrial Flanges to Qatar?

Yes, we supply industrial flanges across Qatar with full export documentation and reliable delivery support.

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