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Cold drawn seamless tubes for hydraulic cylinder barrel
Cold drawn seamless tubes suitable for further honing or skiving&roller burnishing, Grade of ASTM A519 1026 +SRA.
Skived&roller burnished seamless tubes
Seamless cold drawn tubes with size 245x200 are now under skiving&roller burnishing.
A new skiving&roller burnishing machine put into use
A new skiving&roller burnishing machine was put into use. Max skiving length: 9 meters. Diameter range: 50mm-250mm.
A new heat treating furnace put into use
A new heat treating furnace that can deal with tubes with length of 15 meters max was put into use recently.
A new workshop containing one automatic saw cutting machine and polishing has been put into use. The new workshop will be used for saw cutting, polishing, inspection, packing and container loading.
A new automatic saw cutting machine put into use
A new automatic sawing machine put into use in December. Max cutting diameter: 300mm. Min cutting Length: 500mm.
Difference between seamless steel pipe and electric welded steel pipe
Changzhou Chengxin Metal Products Co., Ltd. focuses on hydraulic cold drawn pipe and high-frequency welded pipe. Seamless steel pipes are made of high-quality carbon steel or alloy steel, which can be hot rolled or cold rolled (drawn). Welded steel pipes are welded from rolled steel plates with butt or spiral seams. In terms of manufacturing methods, they are also divided into welded steel pipes for low pressure fluid transportation, spiral electric welded steel pipes, directly rolled welded steel pipes, electric welded pipes, etc. Seamless
What are the classifications of seamless steel pipes and what are their uses
Changzhou Chengxin Metal Products Co., Ltd. focuses on hydraulic cold drawn pipe and high-frequency welded pipe. What are the classifications of seamless steel pipes and their applications? Seamless steel pipes are divided into hot rolled (extruded) seamless steel pipes and cold drawn (rolled) seamless steel pipes due to their different manufacturing processes. Cold drawn (rolled) tubes are divided into round tubes and special-shaped tubes. a. Overview of process flow Hot rolling (extrusion of seamless steel tubes): round tube blank
What is thick wall steel pipe and its application
Changzhou Chengxin Metal Products Co., Ltd. focuses on hydraulic cold drawn pipe and high-frequency welded pipe. What are thick walled steel pipes and their applications? Thick wall steel pipe refers to the steel pipe whose ratio of outer diameter to wall thickness is less than 20. It is mainly used as drilling pipe for petroleum geology, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and high-precision structural pipe for automobile, tractor and aviation. The difference between thick walled steel tubes and thin walled steel tub
Changzhou Chengxin Metal Products Co., Ltd. focuses on hydraulic cold drawn pipe and high-frequency welded pipe. What is seamless steel pipe? High precision finish rolled bright seamless steel pipe Process introduction: high-quality carbon steel, finish rolling, non oxidizing bright heat treatment (NBK state), non-destructive testing, equipment brushing and high-pressure flushing of the inner wall of the steel pipe, rust prevention treatment with antirust oil on the steel pipe, and dust prevention treatment with covers at both ends.
Production process of seamless steel pipe plant
Changzhou Chengxin Metal Products Co., Ltd. focuses on hydraulic cold drawn pipe and high-frequency welded pipe. Production process of seamless steel pipe factory: Cold drawn (rolled) seamless steel pipe in seamless steel pipe plant: round pipe blank → heating → piercing → heading → annealing → pickling → oiling (copper plating) → multi pass cold drawing (cold rolling) → blank pipe → heat treatment → straightening → hydrostatic test (flaw detection) → marking → warehousing Hot rolling (extrusion of seamless steel tu
Standard for making thin-walled steel tubes
The steel pipe whose ratio of outer diameter to wall thickness is greater than 20 is called thin-walled steel pipe. Thin walled steel tubes Thin walled steel tubes are cold drawn. Carbon steel, low alloy steel and alloy steel thin-walled tubes are applicable to general structures and mechanical structures; Thin wall fluid steel pipe is used to transport general fluid; Stainless steel thin-wall tubes are used in industrial heat-resistant containers, transmission pipelines and mechanical structures such as chemical, petroleum, light industry, food, machinery and instruments.
Standard for making thin-walled steel tubes
The steel pipe whose ratio of outer diameter to wall thickness is greater than 20 is called thin-walled steel pipe. Thin walled steel tubes Thin walled steel tubes are cold drawn. Carbon steel, low alloy steel and alloy steel thin-walled tubes are applicable to general structures and mechanical structures; Thin wall fluid steel pipe is used to transport general fluid; Stainless steel thin-wall tubes are used in industrial heat-resistant containers, transmission pipelines and mechanical structures such as chemical, petroleum, light industry, food, machinery and instruments.
What are the classifications of pipes
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What are the types of thin-walled steel tubes
Seamless steel pipes are divided into hot rolled and cold rolled (rolled) seamless steel pipes. Hot rolled seamless steel pipe is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, geological steel pipe and other steel pipes. In addition to ordinary steel tubes, low and medium pressure boiler steel tubes, high pressure boiler steel tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, and other steel tubes, cold roll
Seamless steel pipe is a kind of long steel with hollow section and no joints around. The steel pipe has a hollow section and is widely used as a pipeline for conveying fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, steel pipe is lighter when its bending and torsional strength is the same. It is a kind of economic section steel, widely used to manufacture structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction. Manufacturing annul
How to improve the precision of thick wall honing pipe
1. Raise the surface roughness of the honing tube. 2. Correction of roundness. 3. Strengthen surface hardness and reduce stress deformation. 4. There is residual stress layer after machining, which can increase the fatigue strength by 30%. 5. Strengthen the fitting quality, reduce wear, and increase the service life of components, but the processing cost of components decreases instead.
Causes and Solutions of Honing Pipe Pits
The pitted surface of the quilted tube is also called pitted surface, because the product surface is rough and uneven. Most of them are continuous, and some are locally or periodically distributed. The causes of pitting are: 1. The finished hole or the rolling groove of the front hole of the finished product is worn, or there is broken iron oxide scale stuck; 2. Broken iron oxide scale falls off after being pressed into the surface of rolled piece; 3. Roll corrosion; 4. The surface of the billet is seriously oxidized during heating.
How to Improve the Surface Roughness of Honing Cylinder Pipe
Cylinder, if it is represented as 16 × 320 indicates that the cylinder diameter is 16 mm and the stroke is 320 mm. In addition, if it is a different manufacturer, the honing cylinder pipe is different in internal and external diameters. If the honing cylinder pipe is made of aluminum alloy, its color is silver after sand blasting, and its surface is very smooth. As for this kind of cylinder pipe, there is a relationship between the wall thickness and the pressure, and the relationship between the two is proportional. If the cylinder diameters are the same, whethe
What factors cause the surface problem of honing and rolling tubes
Many people do not pay much attention to the surface problem when choosing honing and rolling tubes. In fact, the surface problem also has a great impact on the use of honing and rolling tubes, which will affect the future use and life of honing and rolling tubes. What factors cause the surface problem of honing and rolling tubes? 1. Quality of selected materials Generally, the surface of our honing and rolling pipe will have small holes. These holes are mainly caused by the hot rolling of materials during processing. As soon as the surface temperature of the part
How to Improve the Finish of Honing Pipe
Generally, a steel pipe obtained by honing process is called honing pipe. In the honing process of honing pipe, it is common to use honing tools, one of which is honing gear. Honing gear is composed of the base and abrasive. It is mainly used for honing to remove impurities and burrs on the material surface, so as to improve the surface finish. However, when using this kind of honing tool, we should also pay attention to the following points: 1. The travel of the equipment shall not exceed the width range when honing, otherwise, the honing gear may be seriously da
Difference between seamless tube and welded tube
From the name of the products, we know welded tubes are welded, while seamless tubes have no welding procedure during the manufacture. Seamless tube is made from round bars that we call "steel billets" through hot piercing, while welded tubes are made from steel plates or strips through different welding method, like electric resistant welding. Generally, seamless tubes can be used for pressure purpose, especially high pressure purpose. Thanks to the perfect control of size tolerance for plates or strips, Welded tubes have perfect concentricity t
Difference between cold drawing and cold rolling
When we say something about precision tubes or cold finished tubes, what we mean is always cold drawn steel tube and cold rolled steel tube. There are big differences between cold drawn tubes and cold rolled tubes. 1. Cold rolled tubes have better size tolerance, especially for thin wall tubes. 2. Cold rolled tubes always have higher tensile strength, because of much bigger thickness reduction or bigger size forming during cold rolling. Based on this point, cold rolling is more economic for some special sizes. 3. Cold drawn tubes h
What is hydraulic cylinder tube
Hydraulic cylinder tube is a kind of precision steel tube, but can be classified as H9 DOM tubings and H8 CDS tubes. In our plant, we mainly manufacture cold drawn (and honed or skived&roller burnished) seamless tubes. Some manufactures use hot rolled seamless pipes as raw material and put it to deep hole boring and honing or skiving&roller burnishing. Deep hole boring is applied to ensure the unique ID for further honing or SRB. While the other manufacturers use cold drawn tubes as raw material and put it to ho
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.