ANSI B16.5 Flanges to the Philippines

Leading Manufacturer & Exporter of
ANSI B16.5 Flanges to the Philippines

Werner Flanges is a globally recognized manufacturer and exporter of ANSI B16.5 flanges to the Philippines, serving the country's rapidly growing oil & gas, petrochemical, power generation, shipbuilding, and water infrastructure sectors. With over two decades of manufacturing excellence, we supply precision-forged flanges that meet the rigorous dimensional, mechanical, and material requirements of the ASME B16.5 standard — ensuring reliable performance across the Philippines' most demanding industrial applications.

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From the refinery corridors of Batangas to the LNG terminals of Mindanao and the shipyards of Cebu, Werner Flanges delivers certified flange solutions backed by comprehensive material traceability, third-party inspection, and complete documentation packages. Our product range covers all seven flange types — Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint, and Orifice — in pressure classes 150# through 2500#, sizes ½” to 60″, and materials including Carbon Steel, Stainless Steel, Alloy Steel, Duplex, Super Duplex, and Nickel Alloys.

We understand the specific procurement requirements of Philippine industrial buyers, EPC contractors, and trading companies, and we offer competitive FOB pricing, fast sea freight dispatch (18–25 days to Manila), and full compliance with ASME, ASTM, and API standards referenced in Philippine industrial projects. Whether you are sourcing flanges for a power plant expansion in Luzon, a refinery turnaround in Batangas, or an offshore platform servicing project in Palawan, Werner Flanges is your trusted supply partner.

Werner Flanges is a leading ANSI B16.5 flanges supplier in Philippines, exporting ASME B16.5 flanges to Manila, Batangas, Cebu, Davao, and Subic Bay. We manufacture and export weld neck flanges Philippines, slip on flanges Philippines, blind flanges Philippines, socket weld flanges Philippines, and threaded flanges Philippines in all pressure classes. Our carbon steel flanges Philippines, stainless steel flanges Philippines, duplex flanges Philippines, and alloy steel flanges Philippines are ISO 9001:2015 certified and third-party inspected. Whether you need Class 150 flanges Philippines, Class 300 flanges Philippines, or Class 600 flanges Philippines for oil & gas, petrochemical, power generation, shipbuilding, or water treatment applications, Werner Flanges delivers precision-engineered solutions with full ASME B16.5 compliance and complete material documentation.

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

ANSI B16.5 Weld Neck Flanges	ANSI B16.5 Slip On Flanges	ANSI B16.5 Blind Flanges	ANSI B16.5 Socket Weld Flanges	ANSI B16.5 Threaded Flanges
ANSI B16.5 Lap Joint Flanges	ANSI B16.5 Spectacle Blind Flanges	ANSI B16.5 Long Weld Neck Flanges	ANSI B16.5 Orifice Flanges	ANSI B16.5 Ring Type Joint Flanges

Industries and Applications We Supply

Industry	Applications
Oil & Gas Industry	The Philippines’ oil & gas sector is anchored by the Malampaya Deep Water Gas-to-Power Project — the country’s most significant energy infrastructure asset — operated by Shell and PNOC Exploration Corporation (PXOC) offshore Palawan. Malampaya supplies natural gas to power plants in Batangas, generating approximately 20% of Luzon’s electricity. ANSI B16.5 flanges are used throughout Malampaya’s offshore platform, subsea pipeline, and onshore gas receiving facility in San Jose, Batangas.Onshore, the Petron Batangas Refinery — the Philippines’ largest refinery — processes crude oil into fuels, petrochemicals, and lubricants. Refinery piping systems rely heavily on ANSI B16.5 Carbon Steel and Stainless Steel flanges in process units including crude distillation, vacuum distillation, hydrotreating, catalytic reforming, and product blending. Alloy steel flanges (F11, F22) are specified in high-temperature process piping.Offshore exploration activity in the West Philippine Sea, Sulu Sea, and Visayas basins creates periodic demand for high-pressure, corrosion-resistant flanges — particularly Duplex, Super Duplex, and 316L grades for seawater and sour service applications
Petrochemical & Chemical Processing	The Batangas Industrial Corridor — including Malampaya Onshore Gas Plant, Pilipinas Shell’s Tabangao Refinery, JG Summit Petrochemicals, and various chemical plants — represents the Philippines’ most concentrated petrochemical cluster. Flanges for this sector must meet stringent ASME B16.5 and API standards, with full material traceability and third-party inspection capability.JG Summit’s naphtha cracker and polymer plants require high-alloy and stainless steel flanges for ethylene, propylene, and polymer handling systems. Chemical plants in Laguna and Cavite industrial zones also require ANSI flanges for process chemical piping, solvent handling, and waste treatment systems.
Power Generation	The Philippines is one of Southeast Asia’s largest geothermal energy producers, with major plants operated by EDC (Energy Development Corporation) in Leyte (Tongonan), Negros (Palinpinon), Sorsogon (Bacon-Manito), and Cotabato (Mindanao). Geothermal power plants operate at elevated temperatures and pressures with steam containing corrosive gases (H₂S, CO₂), requiring ANSI B16.5 flanges in Carbon Steel (A105), Alloy Steel (F11/F22), and Stainless Steel (F316/F316L) for steam gathering lines, separator vessels, and power plant piping systems.Conventional power plants — including coal-fired stations at Calaca (Batangas), Pagbilao (Quezon), Malita (Davao del Sur), and Masinloc (Zambales) — specify ANSI B16.5 flanges in high-energy steam piping (F22, F91), condenser cooling water (A105, Duplex), and auxiliary systems. As new supercritical units are added, demand for F22 and F91 Class 900# and 1500# flanges is increasing.Gas turbine power plants in Luzon and Visayas connected to the Malampaya supply require ANSI flanges in fuel gas piping, cooling systems, and heat recovery steam generator (HRSG) circuits.
Water & Wastewater Treatment	The Philippines faces significant water infrastructure development needs, with Metropolitan Waterworks and Sewerage System (MWSS) and regional water utilities running major expansion and rehabilitation programs. Municipal water treatment plants, distribution pipeline networks, and sewage treatment facilities specify ANSI B16.5 Class 150# flanges in Carbon Steel and Ductile Iron with appropriate coatings, as well as Stainless Steel grades for chemical dosing and treated water service.Industrial water treatment — including boiler feedwater systems, cooling towers, and process water circuits — in power plants, refineries, and manufacturing facilities adds significant demand for stainless and carbon steel ANSI flanges across the country

Frequently Asked Questions (FAQs)

q1: are your ansi b16.5 flanges compliant with philippine project specifications?: yes. our flanges are manufactured to asme b16.5 with material conformance to astm standards — internationally recognized specifications accepted by philippine project owners, epc contractors, and certification bodies. for projects requiring third-party inspection by tüv, dnv, bv, sgs, or intertek, we can accommodate inspection requirements within competitive lead times.
q2: what is the minimum order quantity (moq) for supply to the philippines?: there is no fixed minimum order quantity. we supply from single pieces for urgent replacement requirements to full container loads for large industrial or infrastructure projects. order quantities can be tailored according to project scope and logistics requirements.
q3: can you supply flanges certified to en 10204 3.2 with third-party witness?: yes. we can supply en 10204 3.2 certified materials with third-party inspection witnessed at our facility by customer-nominated agencies including tüv, dnv, bureau veritas, lloyd’s register, sgs, and others. this requirement should be specified during the rfq stage to allow inspection scheduling.
q4: can you supply nace mr0175-compliant flanges for sour service applications?: yes. carbon steel (a105n), alloy steel grades (f11/f22 with controlled hardness), and stainless steel materials can be supplied with nace mr0175 / iso 15156 compliance documentation, including hardness certification within specified limits for sour service environments.
q5: what is the lead time for a large project order in the philippines?: lead time for large mixed project orders is typically 4–6 weeks ex-works depending on material availability, quantity, and grade combinations. standard carbon steel sizes may be dispatched sooner from stock or short production runs. sharing a bill of materials allows accurate lead time planning.
q6: do you offer custom bore flanges to match non-standard pipe wall thicknesses?: yes. custom bore machining is available for all flange types and sizes. provide the required bore dimension, pipe outside diameter, and wall thickness, and our engineering team will confirm machining feasibility and dimensional compatibility.
q7: can samples be provided before placing a bulk project order?: yes. sample flanges can be supplied for technical evaluation, fit-check verification, and documentation review prior to bulk procurement approval. this helps philippine project engineers validate specifications before full project ordering.