Product News,H-beam,Galvanized square tube,Structural Steel Pipe

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About Us

We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.

Products

Welded Steel Pipe

Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plate or steel strip after being crimped and welded. Welded steel pipes have simple production process, high production efficiency, many varieties and specifications.Welded steel pipes for low-pressure fluid transportation (API 5L) are also known as general welded pipes, commonly known as black pipes. Welded steel pipe for conveying general lower pressure fluids such as water, gas, air, oil and heating steam and other purposes. Super Steel Manufacturing can offer SAWL/LSAW Steel Pipe, SSAW Steel Pipe, EFW/ERW Steel Pipe in standard size or as customer’s requirement.

Seamless Steel Pipe

Seamless pipe made of a single piece of metal with no seams on the surface is called a seamless steel pipe. According to the production method, the seamless pipe is divided into a hot rolled pipe, a cold rolled pipe, a cold drawn pipe, an extruded pipe, a top pipe, and the like. According to the shape of the section, the seamless steel pipe is divided into two types: a circular shape and an irregular shape, and the shaped pipe has a square shape, an elliptical shape and the like. The maximum diameter is 650mm and the minimum diameter is 0.3mm. Seamless steel pipe is mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and high-precision structural steel pipe for automobile, tractor and aviation.

ASTM A53 Seamless Pipe

API 5L Seamless Pipe

ASTM A106 Steel Pipe

Boiler steel Tube

Cold Drawn Seamless Pipe

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Stainless Steel Pipe

Stainless steel pipe is used for transporting liquids and gasses in a wide range of industries including mining, oil, natural gas, automotive, and aviation. Super Steel can provide Stainless Seamless Steel Pipe, Stainless Welded Steel Pipe, Stainless Steel Screen Pipe and Stainless Hollow Section in standard sizes, or you can have it custom cut to your specifications.

Stainless Seamless Steel Pipe

Stainless Welded Steel Pipe

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Alloy Steel Pipe

Alloy steel pipe is a kind of seamless steel pipe, its performance is much higher than the general seamless steel pipe, because this steel pipe inside containing Cr, high temperature resistance, low temperature, corrosion-resistant performance of other non-pipe joints not match, so the more extensive use of alloy tube in the petroleum, aerospace, chemical, electric power, boiler, military, and other industries.

Copper-Nickel Pipe/Tube

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OCTG Pipe

Oilfield tubular goods of Surper Steel is a collection of seamless rolled products consisting of Tubing and Casing, Slotted Pipe, Drill Pipe and Drill Collar, Pup Joint and Coupling, which are useful in the oil and gas production activities. These OTCG products are manufactured according to the specifications set by API. OCTG can be either seamless or welded and are available in different sizes and lengths.

API 5CT Pipe

Casing steel pipe

Drill Pipe And Drill Collar

Pup Joint

Slotted Pipe

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Hollow Section

A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The steel hollow section is made up of various material welded structural hollow sections for multiple purposes. No matter building construction, or spare parts manufacturing, even working parts construction. It is also used in these projects. Here are products Mild Steel Square Tube, Mild Steel Rectangular Tube, Stainless Steel Square Tube, Stainless Steel Rectangular Tube.

Circular Hollow Sections

Rectangular Tube

Square steel tube

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Coated Steel Pipe

Coated steel pipe means the pipe that is by the processing after the corrosion, which can effectively prevent or slow the steel pipe occurs in the course of transport and chemical or electrochemical reaction corrosion phenomena. Coated steel pipe can effectively prevent or slow down the corrosion of steel pipes to extend service life and reduce operating costs pipe. Super Steel Manufacturing is a supplier that can offer Galvanized Steel Pipe, FBE Coated Pipe, Epoxy Coated Pipe, 3LPE/3PE Coated Pipe.

3PE Steel Pipe

Epoxy Coating Pipe

FBE Coating Pipe

Galvanized Steel Pipe

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Finned Steel Tube

Fin tubes are a type of heat exchanger that is used in many different industries. These tubes have a finned surface, which increases their surface area and allows them to transfer heat more efficiently. This makes them ideal for applications where high heat transfer rates are required, such as in power plants and refrigeration systems. Fin tubes are made from a variety of materials, including copper, aluminum, and stainless steel. They are available in a range of sizes and shapes and can be customized to meet the specific needs of each application.

Finned Steel Tube

Studded Tube

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Pipe Fittings

Pipe Fittings are defined as the piping components that help in pipe routing for directional changes, size changes, and branch connections. Super Steel is one of the top supplier of Flange, Elbow / Reducer / Tee / Cap / Bend and Valves, which are widely used in both the piping and plumbing industries.

Steel structure

Steel plates normally stand for steel plates 6mm or thicker and are made by hot-rolling a semiproduct slab 200mm or thicker and then through follow-up processes such as cooling or heat treatment. Steel plates ramify into products for general structure, welding, boiler or large-diameter steel pipes depending on material. Super Steel Manufacturing can offer Steel structure Alloy Steel Plate, Carbon Steel Plate, Nickel Alloy Sheet/Plate, Stainless Steel Plate,C Channel, H/I Beam,Steel Bar.

Workshop

High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.

Projects

Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
The many years of experience that we have means that there is always someone who has the ability to carry a project forward.

Services

Super Steel Manufacturing Co.,Ltd(SMC) adheres to the principle of being customer-oriented, focusing on customers and meeting their requirements. We respond quickly and customize products and solutions for end users.

News

Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.

Product News

Introduction to square tube thickness

Square tubes are widely used structural materials essential in construction, machinery manufacturing, and the automotive industry. Their wall thickness — typically measured in millimeters — directly determines strength, durability, and load-bearing capacity. Much like seamless tubes, wall thickness in square tubes is more than a geometric parameter; it’s a key indicator of performance and suitability for specific applications.

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Bending test method for boiler tubes

The bending test of boiler tubes—including both seamless pipes and ERW pipes—is a critical inspection method used to verify their performance under high temperature, high pressure, and complex stress conditions. The primary purpose of the bending test is to evaluate the mechanical properties, deformation capacity, and crack resistance of boiler tubes when subjected to bending stress. Below are the most common boiler tube bend testing methods and their procedures.

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Applications and features of weld neck flange

A weld neck flange is one of the most commonly used types of industrial flanges, especially in medium and high-pressure piping systems. It features a long tapered neck that gradually transitions to the thickness of the pipe, providing excellent strength, durability, and leak resistance. Due to its structural design, it is also known as a butt weld flange or nipple flange.

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Standards referred for WN flange

Weld Neck (WN) flanges are one of the most reliable and widely used flange types in high-pressure and high-temperature applications. To ensure consistent quality, safety, and compatibility, several international standards define the material composition and manufacturing dimensions of these flanges.

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Shapes of welding neck flange

When it comes to steel pipe flanges, the weld neck flange (WN flange) stands out as one of the most reliable and widely used options. Thanks to its unique neck design, it can effectively transfer stress from the pipe to the base of the flange, reducing pressure concentration and improving overall durability. This makes the weld neck flange especially suitable for high-pressure pipelines, high-temperature systems, and even low-temperature or cryogenic applications. For pipelines or valves with a nominal pressure rating (PN) above 2.5 MPa, the weld neck flange is often the first choice.

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Seamless steel pipe manufacturing standards

Manufacturing standards are the cornerstone of ensuring the quality, performance, and safety of seamless steel pipes. Because these pipes are used in a wide range of industries under different service conditions, multiple standards have been developed by national authorities, international organizations, and industry associations. Below is an overview of major standard systems across key regions.

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Passivation treatment time of SMLS pipe

There is no fixed duration for the passivation treatment of seamless (SMLS) pipes. The process may last from just a few seconds to over an hour, depending on multiple variables. The goal of passivation is to create a dense and stable passive film—mainly composed of chromium-rich oxides—on the steel surface, thereby enhancing corrosion resistance. This is typically achieved in an acidic solution.

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Slip on flange vs weld neck flange

In piping systems, flanges play a critical role in connecting pipes, valves, pumps, and other equipment. Among the most commonly used types are Slip On Flanges (SO flange) and Weld Neck Flanges (WN flange). While both serve the same basic function, they differ in strength, durability, welding requirements, and cost. Understanding these differences is essential for choosing the right flange for your project.

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Straight seam welded steel pipes for bridges

In modern bridge construction, selecting the right type of steel pipe is critical to ensuring safety, durability, and efficiency. Among various options, bridge straight seam welded steel pipes—also known as longitudinal welded steel pipes for bridges—stand out due to their excellent performance and reliability. They not only meet the demanding structural requirements of large-scale bridges but also offer advantages in welding stability, dimensional precision, and corrosion resistance.

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American standard seamless steel pipe price

The price of American standard seamless steel pipes is influenced by multiple factors, making it difficult to provide an exact figure. However, its price composition and influencing elements can be summarized as follows.

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