Carbon Steel Flanges to Nigeria

Leading Manufacturer & Exporter of
Carbon Steel Flanges to Nigeria

Werner Flanges is a premier carbon steel flanges distributor in Nigeria, serving the country's expanding oil and gas, petrochemical, and power generation industries for over two decades. As a leading manufacturer and exporter, we supply high-quality carbon steel flanges conforming to ASTM A105, ASTM A350 LF2, and international standards including ASME B16.5, ASME B16.47, DIN, and BS specifications.

Our comprehensive product range includes weld neck flanges, slip-on flanges, blind flanges, socket weld flanges, threaded flanges, and lap joint flanges in carbon steel materials. We serve Nigeria’s critical industrial infrastructure across Lagos, Port Harcourt, Warri, Abuja, Kaduna, Kano, and Benin City, ensuring reliable supply to NNPC projects, Dangote Refinery, petrochemical complexes, and offshore oil platforms.

Werner Flanges operates state-of-the-art manufacturing facilities with complete in-house capabilities for forging, heat treatment, machining, and testing. Every carbon steel flange undergoes rigorous quality inspection including dimensional verification, mechanical testing, PMI analysis, and non-destructive examination. We maintain ready inventory in popular sizes and pressure classes for immediate dispatch, with standard sea freight delivery to Apapa Port and Onne Port within 18-25 days.

Our carbon steel flanges are engineered for Nigeria’s demanding applications in upstream oil production, downstream refining, LNG facilities, thermal power plants, and industrial processing units. With ISO 9001:2015 certification, complete material traceability, and comprehensive documentation packages, Werner Flanges ensures compliance with Nigerian Content Development requirements and international quality standards.

Werner Flanges stands as Nigeria's trusted carbon steel flanges distributor, manufacturing and exporting premium ASTM A105 and ASTM A350 LF2 flanges conforming to ASME B16.5 standards for oil and gas, petrochemical, power generation, and industrial applications throughout Lagos, Port Harcourt, Abuja, Warri, Kaduna, and all Nigerian industrial centers. Our comprehensive inventory includes weld neck flanges, slip-on flanges, blind flanges, socket weld flanges, threaded flanges, and lap joint flanges in pressure classes 150# through 2500#, sizes ½" to 60" NPS, serving NNPC pipelines, Dangote Refinery, Nigeria LNG Bonny Island, offshore platforms, thermal power stations, and petrochemical complexes across the Niger Delta region and beyond. With ISO 9001:2015 certification, complete material traceability, third-party inspection services, fast delivery to Apapa Port and Onne Port, and comprehensive technical support, Werner Flanges delivers the quality, reliability, and service excellence that Nigerian industrial projects demand. Contact us today for competitive quotations, technical specifications, and dependable carbon steel flange solutions manufactured specifically for Nigeria's challenging operating environments and stringent quality requirements.

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	Nigeria’s oil and gas sector represents Africa’s largest petroleum industry, producing approximately 2 million barrels per day from onshore and offshore fields across the Niger Delta region. Carbon steel flanges form the critical backbone of this infrastructure, connecting pipelines, processing equipment, and export terminals throughout the hydrocarbon value chain.Upstream Production Applications:Onshore Oil & Gas Fields: Nigeria’s onshore production from fields operated by Shell, Chevron, ExxonMobil, Total, and indigenous operators like Seplat and Aiteo requires extensive carbon steel flange installations: Wellhead connections and Christmas tree assemblies (Class 600#-2500#) Flowline manifolds connecting multiple wells (ASTM A105, 2″-12″ NPS) Production separators (oil/gas/water) inlet and outlet connections Heater treater flange connections for emulsion breaking Test separator and metering systems Produced water handling and disposal systems Offshore Production Platforms: Deep water developments including Bonga FPSO, Erha FPSO, Egina FPSO, and shallow water platforms utilize carbon steel flanges throughout: Subsea wellhead connections rated to 10,000 psi Riser connections from seabed to platform (Class 900#-2500#) Topside process equipment interconnections Gas compression and export systems Water injection pumps and distribution Crude oil offloading systems to shuttle tankers Midstream Pipeline Transportation: Crude Oil Export Pipelines: Trans Niger Pipeline (TNP) operated by Shell – 24″-36″ diameter Bonny Terminal export facilities – multiple loading berths Forcados Terminal pipeline connections Brass Terminal and Escravos Terminal facilities Pipeline pig launcher and receiver flanges (blind flanges) Custody transfer metering stations (Class 300#-600#) Gas Transmission Networks: West African Gas Pipeline (WAGP) – high-pressure transmission Escravos-Lagos Pipeline System (ELPS) – 477km natural gas Obiafu-Obrikom-Oben (OB3) gas pipeline – 24″ diameter Nigerian Gas Company (NGC) distribution network Gas processing plant inlet/outlet connections Compressor station suction and discharge flanges Downstream Refining & Petrochemical: Dangote Refinery (650,000 bpd – Lagos): Nigeria’s largest refinery under commissioning requires thousands of carbon steel flanges across: Crude distillation units (atmospheric and vacuum) Catalytic cracking units (FCC) – high temperature service Hydrocracking and hydrotreating units Alkylation and reforming units Product blending and storage tank connections Utilities (steam, cooling water, fuel gas, compressed air) Port Harcourt Refinery (210,000 bpd): Ongoing rehabilitation requires extensive flange replacement: Crude furnace connections (ASTM A105, high temperature) Product transfer pumps and pipelines Tank farm manifolds and distribution headers Cooling tower systems Fire water systems Kaduna Refinery (110,000 bpd): Northern Nigeria’s refinery utilizing carbon steel flanges for: Crude receiving facilities from pipeline Atmospheric distillation tower connections Product tankage and rail loading facilities Eleme Petrochemical Complex: Integrated petrochemical facility near Port Harcourt: Olefins cracker furnace connections Polyethylene and polypropylene reactor flanges Utility systems serving chemical processes Cooling and heating medium distribution Indorama Eleme Fertilizer & Chemicals: Urea and ammonia production utilizing: High-pressure ammonia synthesis loop (Class 1500#-2500#) Urea reactor connections (corrosion-resistant service) Steam reforming furnace outlet flanges CO2 removal system flanges Associated Gas Utilization: Nigeria flares significant associated gas; ongoing initiatives to monetize this resource include: Gas gathering systems from oil fields (Class 300#-600#) Gas treatment and dehydration facilities NGL (Natural Gas Liquids) extraction plants Gas-to-power projects across the country Carbon steel ASTM A105 flanges in pressure classes 150# through 600# dominate these oil and gas applications due to optimal balance of strength, weldability, cost-effectiveness, and proven performance in Nigeria’s tropical operating environment.
Petrochemical & Chemical Processing	Nigeria’s expanding chemical industry beyond oil refining includes fertilizer manufacturing, industrial chemicals, and specialty products requiring reliable carbon steel flange installations.Notore Chemical Industries (Rivers State): Fertilizer production complex utilizing carbon steel flanges: Ammonia production units (high-pressure synthesis) Urea granulation and finishing systems Storage and bagging facilities Utilities and support systems Industrial Chemical Manufacturing: Various facilities across Lagos, Port Harcourt, and Kano produce: Caustic soda and chlorine (chlor-alkali plants) Sulfuric acid and nitric acid Industrial solvents and intermediates Paint and coating raw materials Detergent and soap chemicals Carbon Steel Flange Applications: Reactor vessel connections (temperature and pressure rated) Distillation column flanges Storage tank inlet/outlet connections Process pump suction and discharge flanges Heat exchanger shell and tube side connections Utility distribution (steam, cooling water, process air) Chemical processing requires careful material selection based on process conditions. While stainless steel is preferred for corrosive chemicals, carbon steel ASTM A105 serves non-corrosive to mildly corrosive processes, utilities, and water-based systems throughout petrochemical complexes.
Power Generation	Nigeria’s electrical power generation capacity includes thermal (gas and coal), hydroelectric, and emerging renewable sources. Carbon steel flanges serve critical roles in thermal power stations across the country.Major Thermal Power Stations:Egbin Power Station (Lagos) – 1,320 MW: Nigeria’s largest power plant utilizing natural gas: Steam generator water wall panel connections Superheater and reheater outlet headers (high temperature) Steam turbine inlet flanges (Class 600#-900#, ASTM A105) Condenser shell connections Feedwater heater inlet/outlet flanges Deaerator connections Condensate and feedwater pump flanges Cooling water circulation pumps (large bore, Class 150#) Sapele Power Station (Delta State) – 1,020 MW: Gas-fired combined cycle plant: Gas turbine fuel gas supply manifolds HRSG (Heat Recovery Steam Generator) connections Steam turbine HP, IP, LP sections Auxiliary steam systems Makeup water treatment plant Afam Power Station (Rivers State) – 726 MW: Gas compressor discharge flanges Combustion turbine casing flanges Auxiliary cooling systems Lubrication oil cooling systems Geregu Power Station (Kogi State) – 434 MW: Combined cycle facility serving northern grid Omotosho Power Station (Ondo State) – 335 MW: NIPP (National Integrated Power Project) plant Olorunsogo Power Station (Ogun State) – 335 MW: Gas turbine facility Coal-Fired Power Stations: Zungeru Hydroelectric Project auxiliary systems Mambilla Hydropower Project (under development) Steam System Applications: High-pressure steam headers (Class 600#-900#) Superheated steam turbine connections (400°C+) Condensate return systems (Class 150#-300#) Blowdown and drain connections Safety valve inlet flanges Instrumentation connections Cooling Water Systems: Circulating water pumps (24″-48″ NPS, Class 150#) Cooling tower inlet/outlet headers Condenser waterbox connections Auxiliary cooling systems Fuel Gas Systems: Gas pressure reducing stations Gas metering and custody transfer Fuel gas forwarding pumps Emergency shutdown valve installations Carbon steel ASTM A105 flanges provide economical, reliable performance for power generation utilities, with pressure classes selected based on specific operating conditions and safety factors.
Water & Wastewater Treatment	Nigeria’s urban centers face growing water demand, driving expansion of municipal water supply and wastewater treatment infrastructure in Lagos, Abuja, Kano, Port Harcourt, and other cities.Municipal Water Treatment Plants:Lagos State Water Corporation Facilities: Iju Water Works (largest in West Africa) Adiyan Water Works Ishasi Water Scheme Mini water works across metropolitan area Flange Applications in Water Treatment: Raw water intake pumps (Class 150#, large bore) Coagulation and flocculation tank connections Sedimentation basin inlet/outlet manifolds Rapid sand filter underdrains and headers Clear water reservoir connections High-lift pump discharge manifolds Distribution main connections Abuja Water Board Treatment Plants: Lower Usuma Dam treatment facilities Gurara Water Transfer Scheme Distribution network throughout FCT Wastewater Treatment Facilities: Sewage Treatment Applications: Influent screening and grit removal Primary clarifier inlet/outlet connections Aeration basin blower discharge (Class 150#-300#) Secondary clarifier connections Sludge pumping systems Chlorination contact basin Effluent discharge pipelines Industrial Wastewater Treatment: Refinery and petrochemical plant effluent treatment Food processing wastewater systems Pharmaceutical and chemical plant treatment Textile mill effluent treatment Carbon steel flanges in Class 150# dominate water and wastewater applications due to low-pressure requirements (typically <10 bar). Larger sizes (14″-48″ NPS) are common in transmission mains and pumping stations. Protective coatings (galvanizing, epoxy) extend service life in corrosive water environments

Frequently Asked Questions (FAQs)

q1: what is the difference between astm a105 and astm a350 lf2 carbon steel flanges?: astm a105 is the standard carbon steel grade for general piping applications operating from -29°c to 425°c. it’s used in most nigerian oil refineries, petrochemical plants, and power stations for moderate temperature services. astm a350 lf2 is specifically designed for low-temperature service down to -46°c and undergoes impact testing to verify toughness at sub-zero temperatures. this grade is essential for nigeria lng facilities on bonny island, refrigeration systems, and cryogenic applications. for standard refinery and power plant applications in nigeria, a105 is appropriate. for lng, refrigeration, or any service below -29°c, specify a350 lf2.
q2: how long does delivery take to lagos and port harcourt?: sea freight: lagos (apapa/tin can port) 18-22 days from india, port harcourt (onne port) 20-24 days from india. air freight: lagos or port harcourt airport 3-5 days including customs clearance. lead time depends on stock availability. common sizes in class 150#, 300#, and 600# are often in stock; custom specifications require 4-6 weeks manufacturing time.
q3: can werner flanges supply flanges meeting nnpc specifications?: yes. our carbon steel flanges conform to asme b16.5, astm a105/a350 lf2, and other international standards referenced in nnpc specifications. we provide complete material test certificates (en 10204 3.1), pmi testing for chemical composition, full dimensional inspection reports, third-party inspection by approved bodies (sgs, bureau veritas, dnv), nigerian content development documentation, and all required certifications and approvals. for specific nnpc projects, provide the material requisition or specification document for technical confirmation.
q4: what pressure class should i select for my application?: pressure class selection depends on operating pressure, temperature, and safety factor. class 150# up to ~19 bar, class 300# up to ~51 bar, class 600# up to ~102 bar at ambient temperature. higher classes for greater pressures. pressure ratings decrease as temperature increases. apply 1.5x–2x safety factor. typical nigerian applications: water systems: class 150#, general refinery piping: class 300#, high-pressure gas pipelines: class 600#, wellheads and critical service: class 900# and above. our technical team can assist based on your specific conditions.
q5: do you offer third-party inspection services?: yes. third-party inspection is facilitated by sgs (lagos and port harcourt), bureau veritas, dnv, lloyd’s register, intertek, tuv rheinland, and abs. inspection scope includes raw material verification, witness heat treatment, mechanical testing (tensile, impact, hardness), dimensional verification, ndt witnessing (ultrasonic, magnetic particle), final inspection, and loading supervision. inspection certificates facilitate customs clearance and satisfy epc contractor requirements.
q6: what documentation is provided with carbon steel flange shipments?: every shipment includes technical documents: material test certificates (en 10204 3.1), heat treatment charts, dimensional inspection reports, pmi test results, non-destructive testing reports, hardness test reports, impact test reports (for a350 lf2 or when specified); commercial documents: commercial invoice, packing list, bill of lading / air waybill, certificate of origin, insurance certificate; certifications: certificate of conformance (asme b16.5, astm compliance), third-party inspection certificates (when performed), nace compliance for sour service. all documents are in english, electronic copies emailed immediately, originals included in shipment.
q7: can you manufacture custom sizes or special flanges?: yes. werner flanges has full custom manufacturing capabilities: non-standard sizes between asme dimensions, special pressure ratings, modified facing types (male/female, tongue/groove), non-standard bolt hole arrangements, extended or shortened neck lengths, special materials or heat treatments, unique testing requirements, customer-specified marking. process: provide detailed drawing/specification, engineering review, quote with lead time (6-10 weeks), approval, manufacturing with progress updates, final inspection and shipment. minimum order quantities may apply due to tooling costs.