Tube Mill Machine

Pipe Production Line

The tube mill is widely used in household commodities, shoe racks, public facilities, and guardrails such as all kinds of clothes racks, retractable poles, article racks, all-purpose combination racks, tables, and chair legs, indoor handrails, ship and bus racks, and outdoor guardrails.

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steel tubing  is an automation system to produce pipes, square tubes, shaped tubes

Tube Mill  or Pipe Production Line Process :

Firstly, the stainless steel strips are made to go through various quality checks and are trimmed at the edges. The strips pass through the number of rollers as per the required size. In the tube mill, the strip is gradually converted into a tubular shape. The fitted welding machine is then used to weld trim edges of the strip welding process. In this way, rolled pipes and tubes are formed.

The cleaning and heating phase Welded Tube Mill Line

The rolled stainless steel pipes thus manufactured are cut to the required lengths depending upon the industrial demand. These stainless pipes and tubes are then subjected to cleaning to remove the dirt. Further, a heat treatment is given to these rolled pipes and tubes to remove the stresses that may occur due to welding and formation processes. Heat treatment is given on the continuously rolling hearth furnace. The furnace is fitted with temperature recorders and controllers. After the heat treatment process, the stainless steel tubes and pipes are straightened and subjected to pickling for removing scales from the surface.

Cold- drawing process roll forming mill

In some cases, the required size may not be obtained from the mill directly. Then, the cold operation process can be used to obtain the desired size. In the cold drawing process, the tubes or pipes are coated with oxalic and soap solution. This solution acts as a lubricant to reduce friction while cold drawing operation.

Finishing process Square Pipe Mill Steel Tube Manufacturing Machine

The drawn-out tube or stainless steel pipe is then subjected to cleaning, heat treatment, pickling, and straightening. The computerized inkjet marking machine is used to do the marking on the finished pipes or tubes.

Working Flow Welding Pipe Mill Machine

Raw material (steel coil) → uncoiling → shearing and butt-welding → material accumulating → non-power leveling →mill-forming → high-frequency welding → removing burrs outside of weld seam → Zinc spraying → cooling → sizing → roughly straightening → fixed-length cutting → run-out table

Steel Welding Tube Making Machine Parts Details

Structure type: Double-side 180ºrotary hydraulic expanding tightly, which ensure steel coil feeding alternatively and make steel strip go into accumulator freely.

Structure typeHydraulic expanding double sideI..D. of steel coilΦ450mm～Φ550mmO.D. of steel coilΦ800mm～Φ1500mmWidth of stripsH60mm～H320mmMaxi. Load weight≤3500kgDescriptionItemTechnical parametersHorizontal-roll standsQuantitySeven standsMaterial of horizontal standsHigh-precision forged steelDiameter of horizontal shaftΦ75mmMaterial of horizontal shaft42CrMOVertical-roll standQuantityseven standsMaterial of vertical standsQT50Diameter of horizontal shaftΦ45mmMaterial of horizontal shaft45# forged steelDriven gearboxQuantitySeven gearboxesMaterial of gearboxQT50TypeSpiral bevel gearMaterial of gearbox20CrMnTiMaterial of shaft40CrPower transmission methodFrom universal transmission joint to horizontal roll stands

 

Guide and squeeze and scraper of Tube and Pipe Mill Lines

One set of guide roll stands for controlling the direction of pipe seam to ensure pipe seam flatly and straightly entering into extruding rollers.

One set of extruding roll stand for controlling weld seam to realize successful welding.Two sets of scraper frame for scraping outside weld seam.

DescriptionTechnical parametersGuide typeTurkish-heads type and 360°rotaryWelding rollstwo welding rollers   or

Three welding rollers

Scraper standsAdjusting pole and quickly feeding and exit

Sizing Machine tube mill machine

If you are looking for more details, kindly visit Stainless Steel Pipe Production Line.

Additional resources:
5 Ways a Pipe Embossing Machine Elevates Your Business

Sizing device: Mainly fine shaping pipe after welding and controlling size accuracy. Every 6 sets of the horizontal roll stand, vertical roll stand and drive gearbox, 12 sets of a universal shaft. (structure same as forming device)

DescriptionItemTechnical parametersHorizontal-roll standsQuantitySix standsThe material of horizontal standsHigh-precision cast or forged steelThe diameter of horizontal shaftΦ75mmMaterial of horizontal shaft42CrMOVertical-roll standQuantitysix standsThe material of vertical standsQT50The diameter of a horizontal shaftΦ45mmThe material of the horizontal shaft45# forged steelDriven gearboxQuantitySix gearboxesMaterial of gearboxQT50typeSpiral bevel gearMaterial of gearbox20CrMnTiMaterial of shaft40CrPower transmission methodFrom universal transmission joint to horizontal roll stands

Roughly Straightening Machine Frame Tube Mill Production Line

Technical parametersRemarkStraightening stands typeTurk’s head type, and 360°rotaryTwo setsDiameter of straightening shaftΦ35mmThe material of the straightening shaft40Cr

Stainless steel tubing is one of the most versatile metal alloy materials used in manufacturing and fabrication. The two common types of tubing are seamless and welded. Deciding between welded vs. seamless tubing primarily depends on the application requirements of the product. In choosing between the two keep in mind that first, the tubing must be compliant with your project specifications and that secondly, it must meet the conditions for which the tubing will ultimately be used.

Tubing vs Piping

Though both the words tube and pipe are often used interchangeably, largely because both are hollow-shaped, there are important distinctions between the two when determining welded vs. seamless tubing needs. Tubes are measured by the outside diameter (OD) and wall thickness. A pipe, on the other hand, is measured by its inside diameter (ID). In terms of functionality, tubing is generally used in structural and aesthetic applications whereas piping is used for transporting fluids, liquids, and gases.

Seamless Tubing Manufacturing

Knowing that distinction can also help in determining which tubing is best for a given application, welded or seamless. The method of manufacturing welded and seamless tubing is evident in their names alone. Seamless tubes are as defined – they do not have a welded seam. The tubing is manufactured through an extrusion process where the tube is drawn from a solid stainless steel billet and extruded into a hollow form. The billets are first heated and then formed into oblong circular molds that are hollowed in a piercing mill. While hot, the molds are drawn through a mandrel rod and elongated. The mandrel milling process increases the mold’s length by twenty times to form a seamless tube shape. Tubing is further shaped through pilfering, a cold rolling process, or cold drawing.

Welded Tubing Manufacturing

A welded stainless steel tube is produced through roll-forming strips or sheets of stainless steel into a tube shape and then welding the seam longitudinally. Welded tubing can be accomplished either by hot-forming and cold-forming processes. Of the two, cold forming results in smoother finishes and tighter tolerances. However, each method creates a durable, strong, steel tube that resists corrosion. The seam can be left beaded or it can be further worked by cold rolling and forging methods. The welded tube can also be drawn similarly to seamless tubing to produce a finer weld seam with better surface finishes and tighter tolerances.

Choosing Between Welded & Seamless

There are benefits and drawbacks in choosing welded vs. seamless tubing.

Seamless Tubing

By definition, seamless tubes are completely homogenous tubes, the properties of which give seamless tubing more strength, superior corrosion resistance, and the ability to withstand higher pressure than welded tubes. This makes them more suitable in critical applications in harsh environments, but it comes with a price.

Benefits

• Stronger
• Superior corrosion resistance
• Higher pressure resistance

Applications

• Oil and gas control lines
• Chemical injection lines
• Below sea safety valves
• Chemical processing plant steam and heat trace bundles
• Fluid and gas transfer

Welded Tubing

Welded tubing is generally less expensive than seamless tubing due to the simpler manufacturing process in creating welded tubing. It is also readily available, like seamless tubing, in long continuous lengths. Standard sizes can be produced with similar lead times for both welded and seamless tubing. Seamless tubing costs can be offset in smaller manufacturing runs if less quantity is required. Otherwise, though custom-sized seamless tubing can be produced and delivered more quickly, it is more costly.

Benefits

• Cost-efficient
• Readily available in long lengths
• Fast lead times

Applications

• Architectural applications
• Hypodermic needles
• Automotive industry
• Food and beverage industry
• Marine industry
• Pharmaceutical industry

Costs of Welded vs Seamless

Costs of seamless and welded tubing are also related to such properties as strength and durability. Welded tubing’s easier manufacturing process can produce larger diameter tubing with thinner wall sizes for less. Such properties are more difficult to produce in seamless tubing. On the other hand, heavy walls can be achieved more easily with seamless tubing. Seamless tubing is often preferred for heavy wall tubing applications that require or can withstand high pressure or perform in extreme environments.

Contact the Experts at Eagle Stainless

Several factors combine to make stainless steel tubing an excellent choice for structural applications in industries ranging from automotive and aerospace to medical and marine. If you’re still unsure which tubing is best for your application, as a point of reference, though seamless tubing can be substituted for welded tubing, welded tubing can never be substituted for seamless tubing.

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