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Email:admin@yongxingflange.com
Add: DingZhuangZi Industrial Zone, Mengcun County, Cangzhou City, Hebei Province, China

A105 Forged Steel Flanges

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A105 Forged Steel Flanges provide secure connection, absolute sealing, and flow regulation. These products are widely utilized across heavy industrial pipeline projects, including petrochemical & gas, power generation, shipbuilding, water works, and valve manufacturing.
Our production covers full-range forged flange solutions in compliance with international standards, including ANSI, DIN, JIS, and EN1092-1.

Technical Specifications

We possess production capabilities covering a wide range of steel grades, pressure ratings, and international standards worldwide:

Technical Parameter	Specification Details
Carbon Steel Grades	ASTM A105, LF2 (Class 1 / Class 2), 16Mn, 20#
Stainless Steel Grades	ASTM A182, F304 / 304L, F316 / 316L, A182 F317 / 317L, A182 F310, F321, F347, 316Ti
Alloy & Duplex Steel	ASTM A182 F12, F11, F22, F5, F9, F91; Duplex F51, F53, F55, F60, F44; High-Temp F304H, F316H, INCONEL 600, 625, 825, etc.
International Standards	ASME/ANSI B16.5: Class 150 Flanges to Class 2500 Flanges DIN / EN1092-1: PN6, PN10, PN16, PN25, PN40, PN63, PN100 JIS: 5K Flanges to 30K Flanges Also manufacturing BS, GOST, AWWA, and SABS configurations.
Flange Types	Plate Flange, Flat Flange, Slip-On Flange, Welding Neck Flange, Long Welding Neck Flange, Blind Flange, Socket Welding Flange, Threaded/Screwed Flange, Lap Joint Flange, etc.
Connection Facing Types	Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue & Groove, Small Tongue & Groove.
Dimensional Matrix	Size: 1/2" to 100" Wall Thickness: SCH5S to SCH160S, XS, XXS, STD
Surface Anti-Rust Treatment	Anti-rust light oil, black paint coating, yellow rust-preventative varnish, Cold Galvanized, or Hot-Dip Galvanized (HDG)

Industrial Applications

Energy & Infrastructure: Petrochemical & Gas industry, Power industry, thermal and process pipelines.

Fluid Control: Waterworks, heavy valve manufacturing, and general piping connection projects.

Heavy Engineering: Marine shipbuilding, offshore engineering, and heavy structural piping assemblies.

Advanced Manufacturing Infrastructure

Heavy-Duty Equipment: Operating from an 18,000 m2 facility with 50,000,000 RMB in fixed assets, our plant houses a 3,500T hydraulic press, a 2,500D CNC ring rolling machine, and 7 heavy forging hammers to guarantee high-integrity forging capabilities.

Massive Scale & Capacity: With an annual output of 13,000 tons and a maximum forged diameter of up to 2,800 mm, we possess the raw capacity to handle high-volume procurement and extra-large component dimensions seamlessly.

Global Compliance & Certifications

International Credentials: Our manufacturing systems are fully certified to ISO 9001, CE, and 3A standards, ensuring seamless compliance and entry into high-barrier international markets such as Europe and the Middle East.

Universal Standard Alignment: All products are meticulously manufactured to fully comply with major global standards, including ASME/ANSI (USA), DIN/EN1092-1 (Europe), JIS (Japan), and GOST (Russia) for seamless drop-in replacements.

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FAQ

Q: Does your ASTM A105 forged steel flange come with a Mill Test Certificate (MTC)?

A: Yes, absolutely. We provide a 100% traceable EN 10204 3.1 Mill Test Certificate (MTC) with every shipment. The documentation details the precise chemical composition analysis, mechanical test results (yield strength, tensile strength, elongation, and hardness), and the specific heat treatment method utilized during production.

Q: What heat treatment processes do you apply to your A105 carbon steel flanges?

A: Depending on the engineering specifications and pressure rating requirements, we apply professional Normalizing, Annealing, or Quenching & Tempering heat treatments. For standard ASTM A105 applications, normalizing is our baseline process to ensure a uniform grain structure, eliminating internal stresses and significantly increasing impact toughness under high pressure.

Q: Can you manufacture custom or non-standard flanges based on our technical drawings?

A: Yes. Backed by our 3,500-Ton hydraulic press and 2,500D CNC ring rolling machine, we specialize in heavy-forging customization. Simply send your detailed technical blueprints or drawings to our engineering desk for review.

Q: What international standards do your manufacturing lines comply with?

A: Our production lines are fully certified under ISO9001 and CE. We seamlessly manufacture in strict accordance with all major global standards, including ASME/ANSI B16.5 & B16.47 (American), DIN / EN 1092-1 (European), JIS 5K-30K (Japanese), as well as BS, GOST, AWWA, and SABS standards.

Q: What is your typical lead time?

A: Standard lead times depend on your order volume and specific customization requirements, but our massive annual output of 13,000 tons allows us to offer some of the most competitive lead times in the industry. Contact our sales team for an exact delivery timeline based on your current project schedule.

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