ANSI B16.5 Plate Flanges Manufacturer & Exporter

Leading Manufacturer & Exporter of Slip On Flanges to Kenya

Werner Flanges is a trusted manufacturer, supplier, and exporter of slip on flanges to Kenya, serving the country's expanding oil & gas, water infrastructure, power generation, and construction industries. With over two decades of manufacturing experience and full compliance with ASME B16.5, ASTM, and API standards, we deliver precision-forged slip on flanges to Nairobi, Mombasa, Kisumu, Nakuru, Eldoret, and all major industrial centers across Kenya.

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Our slip on flanges are manufactured from premium-grade carbon steel, stainless steel, alloy steel, duplex, and nickel alloy materials — covering sizes from ½” to 60″ and pressure classes from 150# to 2500#. Whether you are sourcing for a municipal water treatment plant along the Athi River corridor, a fuel handling system at the Port of Mombasa, or a process piping installation at the Lamu Port–South Sudan–Ethiopia Transport (LAPSSET) corridor, Werner Flanges provides the quality, documentation, and delivery timelines Kenya’s procurement teams demand.

We hold ISO 9001:2015 certification and maintain a dedicated quality assurance process that includes third-party inspection by TÜV, SGS, Bureau Veritas, and Lloyd’s Register. Every order ships with a full documentation package including Material Test Certificates (MTC), dimensional inspection reports, and certificates of origin — meeting the requirements of Kenyan regulatory authorities and international engineering standards.

Contact our Kenya sales desk for competitive pricing, fast lead times, and technical support tailored to your project requirements.

Werner Flanges is a leading slip on flanges supplier in Kenya, slip on flange manufacturer for Kenya projects, and ASME B16.5 slip on flange exporter to Nairobi and Mombasa. We supply carbon steel slip on flanges Kenya, stainless steel slip on flanges Kenya, Class 150 slip on flanges Mombasa, Class 300 slip on flanges Nairobi, F316L slip on flanges Kenya, A105 slip on flanges for Kenya oil and gas, and custom slip on flanges for LAPSSET and geothermal projects. Our products meet ASME, ASTM, API, and ISO standards and are shipped with full MTC documentation to all major Kenyan cities and project sites.

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	Raised Face Slip On Flanges	Flat Face Slip On Flanges	RTJ Slip On Flanges	Forged Slip On Flanges
Plate Slip On Flanges	Industrial Slip On Flanges	High Pressure Slip On Flanges	ASME B16.5 Slip On Flanges	ANSI Slip On Flanges

Industries and Applications We Supply

Industry	Applications
Oil & Gas Industry	Kenya’s upstream oil sector, centered on Tullow Oil’s discoveries in the South Lokichar Basin in Turkana County, represents a growing market for industrial piping components. The Early Oil Pilot Scheme (EOPS) and the planned Kenya Crude Oil Pipeline (KCOP) — a proposed 820 km heated pipeline from Lokichar to Lamu — will require tens of thousands of flanged connections across gathering systems, pump stations, and the main export pipeline. Slip on flanges in carbon steel (ASTM A105) and alloy steel (F11, F22) are standard specifications for these applications.At the downstream end, the Kenya Petroleum Refineries Limited (KPRL) facility at Changamwe, Mombasa, and the Kipevu Oil Terminal use slip on flanges extensively in product transfer lines, loading manifolds, and utility piping. Stainless steel grades (F316/F316L) are specified where product contamination must be prevented.
Construction, Infrastructure & LAPSSET	Kenya’s industrial sector — concentrated in Nairobi’s Industrial Area, Athi River Export Processing Zone, Mombasa’s Changamwe industrial district, and Eldoret Industrial Estate — supports a broad base of manufacturing, food processing, cement, textiles, and logistics businesses. General process piping, compressed air systems, cooling water lines, and fire protection systems in these facilities use slip on flanges extensively in Class 150 and Class 300 carbon steel and stainless steel.
Power Generation	Kenya is a global leader in geothermal energy, with KenGen’s Olkaria geothermal complex in Naivasha producing over 800 MW of installed capacity — and expansion ongoing. Geothermal steam pipelines, wellhead connections, and turbine inlet piping operate under elevated temperature and pressure conditions, with highly corrosive geothermal brines demanding careful material selection. Stainless steel (F316L, F321) and duplex (F51) slip on flanges are used in geothermal brine handling systems, while alloy steel (F11, F22) flanges are specified for steam service.
Water & Wastewater Treatment	Kenya’s Vision 2030 and successive development plans have placed major emphasis on water supply expansion. Projects including the Northern Collector Tunnel, the Nairobi Bulk Water Supply Project, and the expansion of water treatment works operated by Nairobi City Water and Sewerage Company (NCWSC) and Athi Water Works Development Agency (AWWDA) require large quantities of flanged pipeline components. Slip on flanges in Class 150 and Class 300, carbon steel and ductile iron compatible facings, are standard for these applications.

Frequently Asked Questions (FAQs)

Q1: Do your slip on flanges comply with ASME B16.5?: Yes. All Werner Flanges slip on flanges are manufactured, dimensionally inspected, and marked in full compliance with ASME B16.5 (sizes ½” to 24″) and ASME B16.47 (sizes 26″ to 60″). Material certifications reference the applicable ASTM forging specification for each grade.
Q2: Can you supply flanges for Kenya’s geothermal power projects?: Yes. We supply alloy steel (F11, F22) and stainless steel (F316L, F321) slip on flanges for geothermal applications and can advise on material selection for geothermal brine and steam service conditions at Olkaria and other Kenyan sites.
Q3: What is the minimum order quantity (MOQ) for Kenya?: There is no strict MOQ. We accept project orders of any size. Small quantities can be supplied from stock for faster delivery, while large project orders should be placed 6–8 weeks in advance to allow manufacturing and sea freight transit.
Q4: Can you arrange third-party inspection before shipment?: Yes. We coordinate inspections with TÜV, Bureau Veritas, SGS, Intertek, Lloyd’s Register, and DNV at our manufacturing facility. Inspection notification is typically issued with a 5–7 day lead time.
Q5: Do you supply stainless steel slip on flanges for food and beverage applications in Kenya?: Yes. ASTM A182 F304L and F316L slip on flanges are supplied for hygienic and food-grade piping systems with smooth internal bore finish and passivated surfaces suitable for food processing, dairy, brewery, and tea industries.
Q6: Can you supply flanges to LAPSSET project specifications?: Yes. We manufacture according to EPC contractor specifications, Inspection & Test Plans (ITPs), and project documentation requirements for LAPSSET corridor infrastructure, pipelines, and port developments.
Q7: How do I select the right pressure class for my application?: Pressure class selection depends on operating pressure, design temperature, and material grade. Our technical team can assist using ASME B16.5 pressure-temperature tables to recommend the correct specification based on your service conditions.