Premium Steel Solutions for Global Industries

Top Steel Mill delivers high-performance carbon steel, stainless steel, and alloy steel pipes, fittings, flanges, and tubular products engineered for durability, precision, and reliability in extreme environments.

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Trusted Steel Manufacturing Since Decades

With decades of expertise in metallurgy and industrial fabrication, Top Steel Mill has established itself as a reliable global supplier of high-integrity steel components. We specialize in seamless and welded pipes, forged and cast fittings, ANSI/DIN/BS standard flanges, and custom-engineered solutions for critical applications.

Our product range includes carbon steel (Q235, ASTM A106, A53), stainless steel (304, 316L, 317L, 904L), duplex/super duplex, nickel alloys (Inconel 625, Incoloy 825), and alloy steels (P11, P22, P91). All materials comply with international standards including ASME, ASTM, DIN, and JIS.

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Product Categories

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Global Clients

Our Core Product Lines

Engineered for performance, precision, and corrosion resistance across oil & gas, power generation, chemical processing, and marine sectors.

Stainless Steel Forged Tee

ASTM A182 317L/316L/304L, custom sizes, high-pressure rating

Swage Nipple Fitting

MSS SP95, ASTM B564 Inconel 601, precision swaged

Lap Joint Stub End

ASME B16.9, carbon steel WPB, seamless construction

Threaded Cross Fitting

BS/ANSI standard, DIN PN16, 304L/316L stainless

Threaded Union Fitting

High-pressure hydraulic, alloy steel, precision machined

Seamless Steel Pipe

ASTM A335 P11/P91, A213, A192, cold-drawn/annealed

Butt-Weld Elbow

ASME B16.9, 90°/45° LR/SR, CS/SS/Alloy, Sch40

Socket Weld Flange

ASME B16.5, 4" CL150 RF, Sch40s, nickel alloy

Stainless Steel Cap

A403 WP321, S32100, seamless, butt-welding

Large Diameter Pipe

Up to 400mm, SS 202/304/430, custom lengths

Concentric Reducer

ASME B16.9, ASTM A234 WPB, 1/2" to 48"

Duplex Steel Coupling

1.4539, NPT Threaded, Socket-Weld, B16.11

Why Choose Top Steel Mill?

Engineered excellence backed by decades of industrial experience.

Certified Quality

All products manufactured under strict ISO and ASME standards with full material traceability and third-party inspection support.

Rapid Global Delivery

Strategic location in Shanghai with established logistics partners ensures fast shipping to North America, Europe, Middle East, and Asia.

Custom Fabrication

From forged rings to custom flanges and specialty fittings, we support OEM and project-specific requirements with full engineering support.

Frequently Asked Questions

What materials do you manufacture?

We produce carbon steel (Q235, A106, A53), stainless steel (304, 316L, 317L, 904L), alloy steel (P11, P22, P91), duplex/super duplex, and nickel alloys (Inconel 625, Incoloy 825).

Do you offer custom sizes and specifications?

Yes, we provide full customization for dimensions, pressure ratings, end connections, and material grades based on project requirements and international standards.

What certifications do your products have?

Our manufacturing complies with ASME, ASTM, DIN, BS, JIS, and MSS standards. We provide MTRs, NDT reports, and third-party inspection documentation (SGS, BV, etc.) upon request.

What is your production lead time?

Standard products: 2–4 weeks. Custom orders: 4–8 weeks depending on complexity and quantity. Urgent deliveries can be arranged.

Can you supply complete piping packages?

Yes, we offer full piping solutions including pipes, fittings, flanges, valves, supports, and insulation as per P&ID and isometric drawings.

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