Industrial Flanges Provider Strengthening Qatar

Leading Industrial Flanges Provider
Strengthening Qatar’s Energy Sector

Werner Flanges stands as Qatar's trusted partner for high-performance pipe flanges, supporting the nation's thriving LNG, petrochemical, and infrastructure sectors for over two decades. From the massive North Field expansion projects at Ras Laffan Industrial City to petrochemical complexes in Mesaieed, our comprehensive range of ASME B16.5, DIN, and BS standard flanges powers critical operations across Qatar's industrial landscape.

Serving major cities including Doha, Ras Laffan, Al Khor, Mesaieed, Al Wakrah, Dukhan, and Lusail, we deliver precision-engineered flanges manufactured in carbon steel, stainless steel, alloy steel, and duplex materials. Our product portfolio encompasses weld neck flanges, slip-on flanges, blind flanges, socket weld flanges, and threaded flanges—all manufactured to international standards including ASME B16.5, ASME B16.47, DIN 2633, BS 4504, and applicable Qatar Petroleum specifications.

With Qatar positioning itself as the world’s largest LNG exporter through the North Field East expansion—increasing capacity from 77 to 126 million tonnes per annum by 2027—Werner Flanges provides the critical piping components that ensure safe, reliable operations. Our 100% PMI tested, heat-treated flanges meet the demanding requirements of QatarEnergy LNG, QAPCO, Q-Chem, and Qatar’s rapidly expanding petrochemical sector. Direct shipments to Hamad Port and efficient logistics to Ras Laffan, Mesaieed, and Doha ensure your projects stay on schedule with delivery times of 18-25 days for sea freight and expedited air options available.

Our ANSI B16.5 flanges represent the industry standard for Qatar's oil and gas sector, meeting American National Standards Institute specifications for pipe flanges from 1/2" to 24" in pressure classes from 150# to 2500#. These flanges are the backbone of piping systems at QatarEnergy LNG facilities, RasGas operations, and throughout Ras Laffan Industrial City. Available in all seven types including weld neck, slip-on, blind, socket weld, lap joint, threaded, and reducing flanges, our ANSI B16.5 products serve applications from low-pressure utility systems to high-pressure gas processing plants.

ANSI B16.5 Flanges Qatar | 1/2"–24" | Class 150#–2500# | LNG & Gas Processing Applications | All 7 Flange Types Available

Specifications

Specification	Details
Pressure Rating	Class 150 to Class 2500
Flange Type	Plate Flange
Facing Type	Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Size Range	½” to 24” (DN 15 to DN 600)
Temperature Range	-29°C to +593°C (Depending on Material & Pressure Class)
Applications	Oil & Gas, Petrochemical, Power Generation, Water Treatment, Marine & Industrial Sectors
Manufacturing Process	Forged / Machined
Certification	EN 10204 3.1 / 3.2, IBR, NACE MR0175 / ISO 15156 (as applicable)

Matel and Grade

Type of Materials	Common Specifications / Customization Available on Request
Duplex Steel	ASTM/ASME A182 F51, F60, F61, UNS S31803, UNS S32205
Super Duplex Steel	ASTM/ASME A182 F53, F55, UNS S32750, UNS S32760, F44 (6Mo)
Stainless Steel	ASTM/ASME A182 F304, F304L, F316, F316L, F310, F317L, F321, F347
Carbon Steel	ASTM A105, A350 LF1, LF2, LF3, A266 Class 1/2, A694 F42 to F70, A765 Gr. II
Alloy Steel	ASTM/ASME A182 F1, F5, F9, F11, F12, F22
Non-Ferrous Alloys	Titanium, Brass, Admiralty Brass, Copper Nickel, Nickel Alloys, Hastelloy
Titanium	ASTM/ASME B381 Gr.1, Gr.2, Gr.5, Gr.7, Gr.12, Gr.16
Copper Nickel	ASTM B151 UNS C70600 (Cu-Ni 90/10), C71500 (Cu-Ni 70/30)
Brass, Al-Brass	ASTM B152 UNS C26000, C27200, C28000; ASTM B111 for Al-Brass
Nickel Alloys	ASTM B160, B161, B564 – UNS N02200, N02201, N04400, N08800, N08825, N06600, N06601, N06625, Monel K500
Alloy 20	ASTM B462 UNS N08020
Hastelloy	ASTM B564 UNS N10276 (Hastelloy C276), N06022 (Hastelloy C22)
Cladded Materials	ASTM B898, B265, B424 or custom explosion/clad bonding using dissimilar metals
Cladded Materials	Titanium-Steel, Nickel-Steel, Titanium-Copper, Stainless Steel-Carbon Steel, Bimetallic/Trimetallic Combinations

Types of Flanges

Slip On Flanges	Weld Neck Flanges	Blind Flanges	Socket Weld Flanges	Threaded Flanges
Lap Joint Flanges	Reducing Flanges	Orifice Flanges	Long Weld Neck Flanges	Plate Flanges

Industries and Applications We Supply

Industry	Applications
Oil & Gas Industry	Qatar’s economy is built on hydrocarbons, with the country serving as the world’s largest LNG exporter. Werner Flanges supplies critical piping components to QatarEnergy LNG (formerly Qatargas), the world’s largest LNG producer with 77 million tonnes per annum capacity across 14 LNG trains at Ras Laffan Industrial City. The historic North Field East (NFE) expansion—the largest LNG project in history—will increase capacity to 126 million tonnes per annum by 2027, requiring hundreds of thousands of flanges across gathering systems, processing facilities, and export terminals. Our flanges serve every segment of Qatar’s oil and gas sector: upstream production from the North Field gas reservoir and Dukhan oil fields; midstream gathering pipelines and processing facilities; downstream LNG liquefaction trains, GTL plants (Pearl GTL, Oryx GTL), and the Laffan Refinery complex. Projects like the Barzan Gas development, Al Khaleej Gas (AKG) domestic supply system, and helium extraction facilities at Ras Laffan all depend on our high-integrity flanges. With QatarEnergy signing long-term supply agreements to deliver 40% of all new global LNG volumes by 2029, our partnership with Qatar’s energy sector continues to expand.
Petrochemical & Chemical Processing	Qatar stands as the Gulf region’s second-largest petrochemical producer after Saudi Arabia, with annual output of 17.7 million tonnes. Our flanges are integral to operations at Qatar Petrochemical Company (QAPCO)—established in 1974 as the Gulf’s first petrochemical venture—which produces 840,000 tonnes of ethylene and 780,000 tonnes of low-density polyethylene annually at Mesaieed Industrial City. The Qatofin linear low-density polyethylene plant, Qatar Vinyl Company’s (QVC) EDC and VCM facilities, and Qatar Chemical Company (Q-Chem) complex all utilize our corrosion-resistant stainless steel and alloy flanges.Major developments include the massive Ras Laffan Petrochemical Project—destined to become West Asia’s largest petrochemical complex with a 2.08 million tonne ethane cracker. Qatar Fuel Additives Company (QAFAC) methanol and MTBE production, Qatar Fertilizer Company (QAFCO) ammonia and urea facilities, and the Al-Karaana petrochemical complex all require specialized flanges resistant to aggressive chemicals, high temperatures, and thermal cycling. Our NACE-compliant materials and rigorous testing protocols ensure reliable performance in these demanding environments.
Power Generation	Qatar’s electricity demand grows at 7-8% annually, driven by population growth, industrial expansion, and mega-projects like Lusail City and the ongoing infrastructure development. Our flanges serve the Ras Laffan Power Company (RLPC) facilities, which combine power generation with desalination to provide electricity and potable water to northern Qatar. The Mesaieed Power Station and various independent water and power projects throughout the country rely on our high-temperature alloy steel flanges for steam systems and corrosion-resistant stainless steel flanges for seawater cooling circuits.With Qatar producing over 450 million gallons of desalinated water daily—critical in a nation with minimal natural freshwater resources—our duplex and super duplex stainless steel flanges provide exceptional resistance to chloride-induced corrosion in reverse osmosis plants, thermal desalination facilities, and distribution networks. The planned solar power facilities at Mesaieed and other renewable energy projects represent new opportunities for our product applications.
Water Treatment	Beyond desalination, Qatar’s water infrastructure includes extensive wastewater treatment facilities, sewage networks, and irrigation systems supporting the country’s food security initiatives. The Doha North Sewage Treatment Works, Al Wakrah Wastewater Treatment Plant, and rural facility serving Al Khor municipality all utilize our ductile iron, carbon steel, and stainless steel flanges. The upcoming Doha South Sewage Treatment Plant—one of the region’s largest infrastructure projects—will require thousands of flanges across its collection, treatment, and effluent discharge systems. Qatar’s National Vision 2030 emphasizes water security and environmental sustainability, driving investment in wastewater recycling for landscape irrigation and industrial cooling purposes. Our flanges meet both international standards and Qatar’s local regulatory requirements, including compliance with Kahramaa (Qatar General Electricity & Water Corporation) specifications.

Frequently Asked Questions (FAQs)

Q1: Do your flanges meet Qatar Petroleum specifications?: Yes, our flanges comply with international standards such as ASME, ASTM, DIN, and BS commonly specified in Qatar Petroleum projects. We can manufacture according to specific AGES requirements and provide third-party inspection certification as required.
Q2: What is the typical delivery time for flange orders to Qatar?: Sea freight delivery to Hamad Port, Ras Laffan, or Mesaieed typically requires 18–25 days from order confirmation. For urgent requirements, air freight delivery via Hamad International Airport takes 3–5 days. Lead times depend on quantity, specifications, and production schedules.
Q3: Can you supply flanges with NACE MR0175 compliance for sour gas service?: Absolutely. Since Qatar’s North Field contains hydrogen sulfide (H₂S), we regularly supply NACE MR0175 / ISO 15156 compliant materials for sour service applications. All materials are PMI tested and supplied with complete documentation, including NACE compliance certificates.
Q4: What material grades do you recommend for Qatar’s coastal environment?: For coastal facilities exposed to saline atmosphere and seawater, we recommend 316L stainless steel for chloride corrosion resistance or duplex stainless steel grades (F51, F53) for enhanced strength and corrosion resistance. Carbon steel flanges should be specified with suitable marine-grade coatings.
Q5: Do you offer custom flange manufacturing for non-standard specifications?: Yes, we manufacture custom flanges to non-standard dimensions, special materials, unique facing configurations, and project-specific requirements. We work directly with EPC contractors, engineering consultants, and end-users to meet exact specifications.
Q6: What third-party inspection agencies can inspect our order?: We accommodate inspection by major international agencies including TÜV Rheinland, DNV, Lloyd’s Register, Bureau Veritas, SGS, and Intertek. Inspection arrangements are coordinated as per your project requirements.