Carbon Steel Flanges Distributor USA

Leading Manufacturer & Exporter of Carbon Steel Flanges to the USA

Werner Flanges serves as a premier carbon steel flanges distributor across the United States, supplying precision-engineered, forged flanges that meet the rigorous demands of America's oil and gas, petrochemical, power generation, chemical processing, and infrastructure sectors. With over two decades of manufacturing excellence and a proven track record supplying major industrial buyers worldwide, we deliver carbon steel flanges to all 50 states, with primary distribution hubs serving Houston, Chicago, Los Angeles, New York, Philadelphia, Tulsa, Denver, and Baton Rouge.

Our carbon steel flanges are manufactured to ASME B16.5, ASME B16.47, and MSS SP-44 dimensional standards, available in pressure classes from 150# to 2500# and nominal pipe sizes from 1/2″ to 60″. We specialize in ASTM A105 carbon steel flanges for standard high-pressure and high-temperature service and ASTM A350 LF2 grades for low-temperature applications across refineries, LNG terminals, and cold climate installations in northern states. Every flange undergoes rigorous quality testing including dimensional verification, mechanical property testing, and non-destructive examination to ensure compliance with ASME, API, NACE MR0175, and customer-specific quality requirements.

As a direct manufacturer supplying the USA market, Werner Flanges eliminates distributor markups, delivering competitive pricing with full documentation traceability — Material Test Certificates per EN 10204 3.1, PMI test reports, dimensional inspection records, and NACE compliance certifications. Our efficient global logistics network ensures sea freight delivery to major US ports including Houston (Port of Houston), Los Angeles/Long Beach, New York/New Jersey, Baltimore, and New Orleans within 22-28 days, with expedited air freight options available for urgent plant turnaround and maintenance requirements.

Whether you're sourcing flanges for upstream oil exploration in the Permian Basin, pipeline infrastructure along the Colonial Pipeline corridor, downstream refinery operations in the Gulf Coast, LNG export terminals along the Gulf of Mexico, or power generation facilities nationwide, Werner Flanges delivers the technical expertise, quality documentation, and supply chain reliability that American industry demands.

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

Flanges Distributor	ANSI B16.5 Flanges	ASME Flanges	Forged Flanges	Industrial Flanges
Weld Neck Flanges	Slip On Flanges	Blind Flanges	Socket Weld Flanges	Threaded Flanges

Industries and Applications We Supply

Industry	Applications
Oil & Gas (Upstream, Midstream, Downstream)	US produces over 13 million barrels of crude oil daily. ASTM A105 carbon steel flanges (Class 300#–1500#) connect wellheads, separators, flowlines, and LACT units in the Permian Basin (TX, NM) and Gulf of Mexico deepwater platforms. Midstream Pipelines: Interstate pipelines operated by Williams, Kinder Morgan, TC Energy, and Energy Transfer use carbon steel flanges at compressor stations, cooler headers, and fuel gas systems (sizes 6″–42″). Refineries: Gulf Coast refineries (ExxonMobil Baytown, Motiva Port Arthur, Marathon Galveston Bay) utilize ASTM A105 flanges across distillation, cracking, hydrocracking, and product treating units for maintenance and turnarounds.
Chemical & Petrochemical Processing	Major chemical facilities along the Gulf Coast, Ohio Valley, and Mid-Atlantic rely on ASTM A105 carbon steel flanges (Class 150#–600#) for reactors, distillation columns, heat exchangers, and transfer piping. Ethylene & Derivatives: Crackers and derivative plants (INEOS Battleground, Chevron Phillips Cedar Bayou/Sweeny, LyondellBasell La Porte, Dow Texas City, ExxonMobil Baton Rouge) use flanges in feed systems, fractionation, and utility circuits. Fertilizer Plants: CF Industries and Nutrien plants use carbon steel flanges for ammonia/urea synthesis loops, CO₂ compression, and utility systems.
Power Generation & Utilities	US 1.1 TW electricity generation relies on carbon steel flanges across natural gas, coal, nuclear, and renewable plants. Gas turbines, HRSG piping, steam turbines, feedwater and condensate circuits use ASTM A105 flanges (Class 600#–1500#). Renewables & Geothermal: Carbon steel flanges are used in concentrated solar power systems and geothermal plants in California, Nevada, and Pacific Northwest.
LNG Export & Import Terminals	US LNG export/import terminals (Sabine Pass, Corpus Christi, Covepoint, Freeport, Elba Island) require ASTM A350 LF2 and A105 flanges for ambient and cryogenic utility systems, supporting exports of 80+ million tons/year. New projects include Golden Pass, Commonwealth LNG, Lake Charles, CP2 LNG.
Water & Wastewater Infrastructure	US water/wastewater systems in New York, Los Angeles, Chicago, Houston, and Phoenix use Class 150# ASTM A105 carbon steel flanges for pumping stations, pressure reducing stations, valve vaults, and storage tanks. Flanges meet AWWA and NSF standards for potable water service.

Frequently Asked Questions (FAQs)

Q1: Are your carbon steel flanges manufactured to full ASME B16.5 compliance?: Yes. Werner Flanges carbon steel flanges are manufactured, dimensionally inspected, and documented to full ASME B16.5 compliance, including face finish, markings (per MSS SP-25), and critical tolerances. Material Test Certificates (EN 10204 Type 3.1) confirm chemical composition and mechanical properties for ASTM A105 or A350 LF2. Suitable for ASME B31.3, B31.1, and B31.8 piping systems in the USA.
Q2: Do you supply NACE MR0175 compliant flanges for US sour service applications?: Yes. We supply NACE MR0175 / ISO 15156 compliant ASTM A105 carbon steel flanges for H₂S service, manufactured with controlled chemistry and maximum hardness HRC 22 (HB 237). Third-party hardness and inspection can be witnessed by Bureau Veritas, TÜV, or SGS.
Q3: What is the typical lead time for carbon steel flanges to the USA?: Standard sizes (NPS 1/2″-24″, Class 150#-600#, ASTM A105) ship from inventory with sea freight to US East or Gulf Coast in 22–28 days; inland trucking adds 2–4 days. Air freight is available in 5–8 days. Custom sizes, Class 900#, or ASTM A350 LF2 require 4–8 weeks manufacturing time.
Q4: Can you supply ASTM A694 flanges for US pipeline applications?: Yes. We manufacture ASTM A694 high-yield carbon steel flanges (grades F42–F65) compatible with API 5L line pipe (X52–X65) for pipelines. Flanges are supplied with MTCs documenting yield strength compliance and can be made in large diameters per ASME B16.47 Series A or B.
Q5: Do you offer third-party inspection services for US procurement?: Yes. Third-party inspections can be arranged with Bureau Veritas, TÜV, DNV, Lloyd’s Register, Intertek, and SGS. Inspectors can witness mechanical testing, review heat treatment, verify dimensions, observe NDE, and issue inspection release notes. ITPs are aligned with ASME B31.3 and API Q1 requirements.
Q6: What US customs documentation do you provide?: We provide complete documentation: commercial invoice with HTSUS code, detailed packing list, certificate of origin, ISF-compliant shipment data, and country of manufacture declaration. Our partners coordinate with US CBP and customs brokers for efficient clearance.
Q7: Can you supply large-diameter flanges for US pipeline and power projects?: Yes. Large-diameter carbon steel flanges up to NPS 60″ (DN1500) are manufactured per ASME B16.47 Series A & B, in weld neck, slip-on, and blind types, Class 150#–600#. Lead times are 6–10 weeks, with specialized breakbulk or flat-rack shipping arranged for US delivery.