What is the difference between finished rolled pipe and cold drawn pipe

There are differences in the manufacturing process, material performance and other aspects of finished rolled pipe and cold drawn pipe, and the specific differences are as follows:

<>1.The manufacturing process is different: the finished rolled pipe is formed by high-temperature rolling and then after several shaping and rolling, and the main purpose is to ensure the dimensional accuracy and surface quality of the pipe.

Comparatively speaking, cold-drawn pipes are made by directly processing hot-rolled blanks or steel pipes at room temperature, and the production process includes three stages: hot rolling, pickling, and cold drawing.

2.Difference in surface finish: The surface of the finished rolled pipe is smoother, no protrusions, less iron oxide scale, and the surface quality is better than that of the cold drawn pipe (there were previously fuzzy parts, so the correction was made).

Especially for high-precision, chemical analysis, hygienic processing fields, such as medical devices, it is necessary to require tubular products with high finish requirements.

3.Material microstructure differences: due to different manufacturing processes, the grains in the finished rolled pipe are slightly larger than those of the cold-drawn tube, which means that the strength and plasticity may be slightly inferior to the cold-drawn tube, and the precision is also paid to meet the needs of various complex shapes.

To sum up, there are obvious differences between finished rolled pipes and cold-drawn pipes in terms of manufacturing process and material properties. Each tube has different advantages and application ranges, and the appropriate fineness can be selected for processing and use according to the specific requirements.

The processing equipment for finishing rolled pipes is "steel pipe cold rolling mill".

The processing equipment for cold drawn pipes is "steel pipe cold drawing machine".

Honing tubes are honed (on a honing machine) on top of cold-drawn or finished tubes.

In terms of accuracy and surface, the best surface and accuracy is honed pipe, followed by finished rolled pipe, and finally cold drawn pipe, (if you add another hot rolled pipe, then the worst surface and size is considered hot rolled pipe).

There are too many classification methods for steel pipes, which can be divided into safety uses, processing methods, and material components.

You can check out the articles in this category of my space.

For you in such detail, you must give me extra points!!

I'll answerFine drawing, cold drawing, precision drawing, cold and hot drawingThey are all metal pipe processing methods or product types, and there are some differences between them. Here's a brief explanation of them:

Automobile manufacturing, military industry, mechanical processing, electronic equipment, medical equipment, construction machinery, railway locomotives, aerospace, ships, injection molding machines, die-casting machines, machine tool processing, diesel engines, petrochemical plants, power stations, boiler equipment

Fine extubation: Fine extubationIt is a seamless steel pipe that is manufactured by the drawing process. The process involves passing the pickled billet through the mold under specific conditions and gradually stretching the tube using tensile force to form the tube of the desired diameter and wall thickness.

Fine extubation has a high degree of dimensional accuracy and smooth internal and external surfaces, and is widely used in automobile manufacturing, mechanical equipment and precision instruments and other fields.

Cold Drawing: Cold DrawingIt is also a seamless steel tube, but its manufacturing process is slightly different from that of finely drawn tubes. The cold-drawn tube adopts the cold-drawn process, in which the pickled billet is passed through the mold at room temperature, and the cold-drawn force makes it gradually longer and thinner, so as to form a seamless pipe.

Cold-drawn tubes have high dimensional accuracy and smoothness, and are mainly used to manufacture high-precision mechanical parts, hydraulic equipment and precision instruments.

Precision Tube: Precision TubeIt is a highly precision metal tube with high dimensional accuracy and smoothness. It is usually manufactured by a cold-drawn process, using high-quality raw materials and processed through multiple processes during the manufacturing process.

Precision tubes are widely used in automotive manufacturing, aerospace, electronic equipment, and chemical industries to transmit substances such as liquids, gases, and solids.

Cold-tied pipe: Cold-tied pipeIt refers to a metal pipe that is made by grinding slag at room temperature using the binding process. In this process, the billet is extruded and deformed in the mold by pressure, gradually making it into the desired tube shape.

The manufacturing process of cold drawn pipes is simple and relatively low-cost, and it is widely used in construction, bridge, machinery and petrochemical industries.

Hot Tied Tube: Hot Tied TubeIt is a metal pipe that is manufactured by the extrusion process at high temperatures. In the hot rolling process, the billet is heated to a certain temperature and then extruded into the desired tube shape under the pressure of the rolling block.

The manufacturing process of hot tie pipes is simple and efficient, and it is widely used in the fields of construction, machinery manufacturing, petrochemical and energy.

To sum up, fine drawn tubes are manufactured by the drawing process to manufacture seamless steel tubes, cold drawn tubes are manufactured by the cold drawing process, and precision tubes are highly precision metal tubes. Cold-tied pipes and hot-tied pipes refer to metal pipes manufactured by binding at room temperature or extrusion process at high temperatures, respectively. They differ in terms of dimensional accuracy, machining technology, and field of application.

These tubes have important application value in their respective fields and meet the needs of different industries for tube quality and performance.

There are the following areas between fine drawn tubes and cold drawn tubes, precision tubes, cold-rolled tubes, and hot-rolled tubes:

1.Precision steel tube: Precision steel tube is generally a seamless steel tube manufactured by cold drawing process, with a high degree of dimensional accuracy and finish.

Fine extubation is usually used in demanding mechanical structures, hydraulic equipment, auto parts and other fields.

2.Cold Drawn Tube: Cold drawn tube is a seamless steel tube made by drawing and deforming the heat treated steel billet.

The cold drawing process can improve the dimensional accuracy and surface quality of steel pipes, making it have better mechanical properties and corrosion resistance, and is widely used in machining, automobile manufacturing, petrochemical industry and other fields.

3.Precision tube: Precision tube refers to a seamless steel tube with high dimensional accuracy of outer diameter, wall thickness and inner diameter.

The manufacturing process of precision tube is realized by cold drawing, cold rolling, etc., with high dimensional stability and finish, and is suitable for precision instruments, semiconductor equipment, aerospace and other fields.

4.Cold rolled tube: Cold rolled tube refers to a steel tube manufactured by a cold rolling process, which is generally formed by hot rolled steel plate or hot rolled steel strip after cold rolling and pressing, and then annealed to obtain the final size.

Cold-rolled pipes have high dimensional accuracy and finish, and are widely used in mechanical structures, building materials and other fields.

5.Hot rolled tube: Hot rolled tube refers to a steel tube manufactured by the hot rolling process, which is heated with a hot rolled billet as raw material

There is a big difference between these types of steel pipes.

"Fine drawing", it can be said that it is precision cold drawing, with high dimensional accuracy, and it can be used to pull the chain or use the hydraulic puller to return to the mountain, but the premise is to ensure the dimensional accuracy.

Cold Drawn Tube", mainly chain drawing.

The dimensional accuracy of the drawn steel pipe is higher than that of the hot-rolled pipe.

"Cold rolled pipe", the dimensional accuracy is higher than that of hot rolling than cold drawing, there are two rolls of cold rolling and three rolls of cold rolling, of which three rolls of cold rolling have the highest dimensional accuracy.

"Hot rolled pipe", the dimensional accuracy is the worst, generally used for mechanical structure and fluid transportation, where the size requirements are not too high.

If you put a few of them, the dimensional accuracy of the A is ranked as follows:

Hot rolling-cold drawing-fine drawing-cold rolling-finishing rolling.

Dimensional accuracy from coarse to fine).

At present, with the needs of industrial development, the dimensional accuracy of steel pipes is required to be higher and higher.

1. The main feature of seamless steel pipe is that there is no welded seam and can withstand large pressure. The product can be very rough cast or cold picked.

2. Precision steel pipe is a product that has appeared in recent years, mainly because the inner hole and outer wall size have strict tolerances and roughness.

The precision tube has high precision and small error. Save time and effort.

The dimensional accuracy is different, and the precision requires a smaller dimensional deviation.

The main difference is that the process is different and the caliber is different.

The difference between precision steel pipes and ordinary carbon tubes is that precision steel pipes have high precision. The second is that the workmanship is different.

Cold-drawn precision seamless steel pipe is a high-precision steel pipe material. The main categories are: precision seamless steel pipe, precision hydraulic seamless steel pipe, cold-drawn precision seamless steel pipe, cold-rolled precision seamless steel pipe, high-precision seamless steel pipe, precision bright seamless steel pipe.

Due to different categories, it can be used in hydraulic system piping, automobile manufacturing piping, military industry, construction machinery, railway locomotives, aerospace, ships, injection molding machines, die-casting machines, machine tools, diesel engines, petrochemical industry, power stations, boiler equipment and other industries.

Precision seamless steel pipes are generally made by cold rolling process, while cold-drawn seamless steel pipes are made by cold drawing process.

Generally speaking, the dimensional accuracy of cold-rolled steel pipes will be much better than that of cold-drawn pipes, so they are called precision steel pipes.

In the future, if there are similar problems, you can go to Changzhou Precision Steel Pipe Blog Network to check.