The diameter of 6 inches 168mm is already a medium-sized pipe in the straight seam welded pipe. This kind of pipe has many usage, such as solar brackets piles, ground piles, construction, etc.

This equipment can produce pipes from the smallest 2 inches 50.8mm to the largest 6 inches 168mm. A set of equipment includes all pipes. Different pipe diameters require different molds.

Customers can choose from a variety of technical styles for this set of equipment, including conventional round to square, direct square for square and rectangular pipes, or FFX flexible molding technology. No matter which option you choose, we can provide a perfect solution.

In the high-frequency welding process, the Ferrite rod (also known as the Ferrite core) is an important auxiliary part located inside the pipe and close to the pipe seam weld area. Its main function is to enhance the concentration effect of the current at the welding seam, thereby improving the heating efficiency and welding quality.

Cold roll forming equipment is to extrude steel strips or steel plates through rollers into different shapes, suitable for different needs. Common products include C-shaped profile, U-shaped profile, high-speed guardrails, color steel roofs, shelves and other uses.

Machine de formage à froid de pannes C/Z pour profilés de chapeau formant en continu un profilé en acier. Des opérations telles que le poinçonnage, l'emboutissage, peuvent être effectuées en ligne. Ensuite, la section métallique est coupée en bout de ligne à la longueur souhaitée. 

Les lames de scie circulaire HSS sont fabriquées à partir d'un type d'acier à outils appelé acier rapide, utilisé dans la découpe de tubes en ligne ERW. Ces éléments d'alliage contribuent à la dureté et à la résistance à la chaleur des lames.

The Vertical Spiral Accumulator is an efficient strip storage system used in continuous production lines such as high-frequency ERW tube mills and slitting lines. Its main function is to provide temporary strip storage during coil changeover or welding, ensuring continuous, uninterrupted production.

• • Directly Square Forming Tech.
• • Using same set of toolings, saves tooling costs.
• • Press a button to automatically adjust the toolings.
• • Pipe diameter range 150x150mm to 300x300mm

Découpe et enroulement de divers types de plaques d'acier. Déroulage de bobines de matières premières, refendage en bandes étroites selon les besoins, et enfin enroulement. Ces bobines seront utilisées sur les laminoirs à tubes ERW pour produire des tuyaux, des machines de formage à froid et d'autres fonctions.

This machine is used to slitter coiled metal strips into required widths along the longitudinal direction and then collect them into coils again. The unit adopts hydraulic system, variable frequency speed regulation system and PLC control. The unit has stable performance and safe and convenient operation.

AIS MACHINERY specializes in the design and manufacturing of high-performance steel coil slitting lines. Our slitting machines are engineered for precision, speed, and reliability, making them ideal for processing cold-rolled, hot-rolled, stainless steel, and galvanized coils. Especially suitable for coils with thicknesses ranging from 2mm to 8mm, our slitting lines serve industries such as automotive, construction, appliance, and metal processing.

The cage accumulator is a commonly used material storage device in ERW tube mill production lines. It serves as a buffer between the uncoiler, shear and butt welder, and the forming mill, ensuring continuous production without interruption and improving the overall line efficiency.
The steel strip is stored helically around a vertical cage frame, maintaining stable strip tension and allowing quick feeding.

It is suitable for the production of carbon steel, stainless steel, and alloy steel pipes, especially for medium to high-capacity requirements.

The Horizontal Accumulator, also known as a Floor-Type Spiral Accumulator, is a dynamic coil storage system used in tube mills, slitting lines, and other continuous strip processing lines. Its main function is to buffer strip material during coil changeover or welding, ensuring non-stop production.

coil accumulator to storage the coil, keep erw tube mill non stop running with high speed. this is disc type accumulator, suitable use pipe mill below 5inch, 5mm thickenss. good quality low cost.

After uncoiling and leveling, the strip enters the upper disc group, winds through several fixed discs, and exits from the bottom. This forms a vertical buffer area that automatically adjusts feeding speed based on mainline status. During coil changeover, the accumulator speeds up to maintain continuous output, ensuring non-stop production.

Our Double Cone Uncoiler is designed for stable and efficient coil loading, supporting up to 30 tons. Ideal for heavy-duty steel coil processing lines. Inquire now for custom solutions.

The single arm uncoiler is an efficient, compact, and space-saving device designed for uncoiling steel coils in tube mills and other metalworking lines. Compared to double-head uncoilers, the single arm uncoiler offers a larger load capacity of up to 15 tons, making it ideal for handling heavier coils. This design ensures greater stability and efficiency when processing heavy steel coils.

The Double-Head 4 Ton Uncoiler is a high-efficiency decoiling machine designed for continuous production. With its double-mandrel structure, it allows seamless coil changeover without stopping the line, making it ideal for ERW tube mills, roll forming lines, and slitting lines.

What is a 200kW High-Frequency Welder?

A 200kW HF Welder is a powerful industrial welding system used to join the longitudinal seam of steel pipes by applying high-frequency electric current. It is commonly used in ERW pipe production lines for welding round, square, or rectangular steel tubes.

Milling Cutting Saw Main Unit: This unit is used for precise cutting of pipe materials. It employs high-speed rotating tools to mill and cut pipes accurately, ensuring smooth and high-quality cutting surfaces. It is designed for thick-walled pipes and materials that require precision cutting.

The friction saw is an online flying cutting system that uses high-speed rotating HSS blades to generate heat through friction, enabling efficient hot cutting of steel pipes. It is especially suitable for continuous production of carbon steel pipes, offering high-speed performance with relatively low operating cost. Compared to cold saws, friction saws are ideal for medium-to-large diameter pipes with moderate wall thickness.

This production line adopts high-frequency induction welding and continuous roll forming to manufacture large-diameter carbon steel pipes. Widely used in pipelines, construction structures, bridge foundations, and port piling, it features FFX forming, heavy-duty sizing structure, quick roll-change modules, and centralized automation for stable, flexible, and high-capacity operation.

A hydraulic upsetting machine is a specialized forging or forming machine used to increase the diameter (upset) of the end of a pipe, tube, rod, or bar through axial compression, typically by applying high-pressure hydraulic force. It's commonly used in industries such as oil & gas, construction, and mechanical manufacturing—especially in drill pipe production, tool joints, and high-pressure pipe ends.

This line adopts continuous cold roll forming and high-frequency induction welding. It features FFX forming technology and quick roll-change systems, offering high efficiency, precision forming, and fast size switching. It is especially suited for high-spec structural, pressure, and API-grade pipes.

The 12-inch ERW tube mill is an automated high-frequency welding system designed for the production of large-diameter round and shaped steel tubes (such as square and rectangular). This production line is suitable for continuous forming and welding of carbon steel and low-alloy steel strips. It is widely used in oil and gas pipelines, structural tubing, pressure pipelines, bridge foundation piling, and other applications, meeting the global demand for high-quality, medium-thick wall welded pipes.

The 10-inch ERW tube mill is designed for continuous and automated production of medium to large-diameter welded steel pipes. It transforms steel strips into round pipes through forming, high-frequency welding, sizing, and cutting processes. The equipment is highly efficient, reliable, and suitable for high-strength, high-precision steel pipe manufacturing. Applicable pipe types include: structural pipes, fluid pipes, pressure pipes, pile pipes, and general-purpose steel tubes.

This 8-inch straight seam welded pipe equipment adopts modular design, heavy-duty steel structure, and CNC adjustment system to ensure stability and precision when producing large thick-walled steel pipes. The overall structure is welded and assembled with optimized profiles, with good seismic resistance and load-bearing capacity. All key parts are precision-machined with high-strength alloy steel and are equipped with linear guides or ball screw drives to achieve high-response, low-error adjustment.

This production line is specially designed for the efficient manufacturing of medium-to-large diameter welded steel pipes. It is widely used in structural tubing, fluid transportation, low-pressure pipelines, auto parts, machinery, and construction industries. With advanced automation and intelligent control systems, this production line offers high-speed, high-precision, and stable operation, making it an ideal solution for modern steel tube manufacturers.

Pipe Diameter: 38mm – 127mm｜Wall Thickness: 1.5mm – 5.0mm

This production line utilizes high-frequency induction welding. Steel strips are continuously fed through forming rollers to gradually shape into a round tube. The strip edges are heated by high-frequency current and pressed together by squeeze rollers to form a solid weld seam. The entire process is automated, ensuring high efficiency, precision, and operational stability.

Pipe diameter 25mm to 114mm, Pipe thickness range 1.5mm to 5.0mm

The strip is continuously fed into a series of rollers that gradually bend it into a round shape. High-frequency induction heating melts the edges, and they are pressed together to form a strong, seamless weld. The pipe is then shaped into the required profile (round, square, or rectangular), straightened, and cut to length.

Pipe diameter 21.3mm to 76.2mm, Pipe thickness range 1.0mm to 4.0mm

Cored wire tubes are manufactured using cold-rolled low carbon steel strips, filled with single or composite functional powders such as calcium, aluminum, silicon, and titanium. By precisely controlling the feeding rate and insertion depth, the core material is released into molten steel, where it reacts with impurity elements like oxygen (O) and sulfur (S), forming stable compounds (e.g., CaO, CaS). This reaction effectively modifies inclusions and purifies the steel.

The production of cored wire tubes is a high-precision, high-efficiency cold roll forming process. The core challenge lies in ensuring uniform filling, consistent sealing, and continuous stable operation. The entire process integrates automated machinery with advanced control systems to meet the strict requirements of metallurgical refining.

U-shaped steel cold forming equipment is an automated forming production line designed to process steel strips into U-shaped structural parts through multiple continuous cold forming processes. The entire system combines advanced rolling technology, precise feeding control and intelligent operating system, and is suitable for batch production of U-shaped steel products of various specifications, and is widely used in engineering structures such as building supports, power towers, vehicle frames, tunnel supports, etc.