Datong Hydraulic

  DIN2391 ST52 Tube material is the most popular use in hydraulic cylinder production due to the better price and good yield and tensile properties. As one of the leading  cylinder honing tubes suppliers and manufacturers, We produce DIN2391 ST52 honed steel tubes and DIN2391 ST52 skived roller burnished tubes with high quality with better prices.  Advantages of Datong DIN2391 ST52 Tubing 1, High precision tolerances; Our DIN2391 ST52  honed steel tube can meet ID tolerance H7, H8, H9, … etc according to the customer’ requirements, and its I.D dimension. 2, Seamless tube with high pressure resistance; We only use seamless cold drawn tubes to produce honed barrels, which means the hydraulic cylinder can work under higher pressure, thus our honed tubes are more reliable for industry applications. 3, High Smooth inside surface; The roughness of our honed pipe is Max Ra 0.4 microns ID finish . 4, Good weldability: The weldability of our honed steel tubing is very good, ...

 Heat treatment is necessary for H8 honed tubes in order to improve their mechanical properties and make them more suitable for their intended application. The heat treatment process involves heating the steel to a specific temperature and then cooling it down slowly, which can result in changes in its microstructure and properties. In H8 honed tubes, a continuous ans smooth surface can be obtained on the inner diameter thanks to the skiving and burnishing technique. H8 honed tubes that Datong Hydraulic produced are in EN10305 standards in various size and E355+SR（DIN2391 ST52 BK+S）quality standards and all of them are cold drawn and stress released. Material : E355 ST52 Delivery Condition : BK, BK+S, GBK, NBK ID Size  : 20mm – 1500mm Length : max 16m Type : Seamless, Hot Rolled, Cold Rolled, Cold Drawn Straightness : ≤ 0.5/1000 Roughness : 0.2-0.4 um Tolerance EXT : DIN2391, EN10305, GB/T 1619 Tolerance INT : H7,H8,H9 ADVANT...

  ST52 Cylinder Barrel  is well known as hydraulic cylinder tube in industries.  Honed Tubes , Skived & Roller Burnished Tubes are the most important material of manufacturing  hydraulic cylinders . Delivery Condition Of ST52 Cylinder Barrel Normal speaking , Annealing and normalizing of steel are two common heat treatment processes.The purpose of annealing and normalizing is to eliminate certain defects caused by hot processing of steel, or to prepare for the subsequent cutting and final heat treatment. As a professional cylinder barrel factory,  Datong Hydraulic  can do production with Delivery Condition: BK, BK+S, GBK, NBK. To keep the cylinder tube good working performance. Cold Finished(BK):  Honed Cylinder Tubes  do not undergo heat treatment following the final cold forming and thus, have a rather high resistance to deformation. Cold finished and stress-relieved (BK+S): Heat treatment is applied following the last cold forming process. ...

  Datong Group as a professional manufacturer of cylinder tube and cylinder piston rod ,We stock the largest range of Honed Cylinder Tubes & Unhoned Cylinder Tubes with imperial size and metric size. These steels are derived from a range of leading manufacturers from China like BaoSteel. There are key types we stock: Finished (Honed) Tubes – Honing process / SRB: Skived and Roller Burnished. Semi-finished (Unhoned) Tubes are Made from ST52 Drawn over mandrel & Cold Drawn Seamless Honed Cylinder Tube: Hot Finished E355. Advantages Of Datong Group Cylinder Tube 1, High precision tolerances; Our honed steel tube can meet ID tolerance H7, H8, H9, … etc according to the customer’ requirements, and its I.D dimension. 2, Seamless tube with high pressure resistance; We only use seamless cold drawn tubes to produce honed pipes, which means our honed tubing can work under higher pressure, thus our honed pipes are more reliable for hydraulic cylinder applications. 3, High Smooth...

The  honing tube   is rolled, because the residual compressive stress is left on the surface layer, which helps to close the tiny cracks on the surface and hinders the expansion of erosion. Thereby improving the surface corrosion resistance and delaying the generation or expansion of fatigue cracks, thus improving the fatigue strength of the honing tube. Through rolling forming, a layer of cold work hardening layer is formed on the rolling surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, thus improving the wear resistance of the inner wall of the grinding tube and avoiding burns caused by grinding. After  rolling process , the reduction of surface roughness can improve the matching properties. Rolling is a kind of chip-free machining, which makes use of the plastic deformation of metal at normal temperature to flatten the micro-roughness of the workpiece surface, so as to change the surface structure, mechanical chara...

As we all know,In the process of using the  hydraulic cylinder , the hydraulic cylinder barrel will be damaged,it is common that there will be scratch on the surface of the  honed tube , some customers will ignore these scratches, this to us is not responsible for the cylinder, when a small scratches in the cylinder,we usually take some tips to deal with them. 1.First,  to clean up the oil on the surface of our hydraulic cylinder barrel, then we will use the grinder machine to the surface treatment of the scratched part of our cylinder, at this time we have to grind the surface of the cylinder wall out of swallowtail groove. Although we have cleaned our cylinder at the beginning, at this time we need to clean the cylinder barrel further. At this time, we use anhydrous ethanol to clean the surface of the scratch repair of honed cylinder barrel. 2. We usually use special  repairing adhesive  to solve the scratches on the surface of  hydraulic cylinder barrel ...

The required  hydraulic cylinder barrel/honed tube  is the very important part of  hydraulic cylinder , and sometimes the direct acting component of hydraulic cylinder  (when piston rod or plunger is fixed); the barrel, end cover and piston (plunger) form a sealed chamber for containing pressure oil and driving the load for acting; thus the barrel has requirements for strength, rigidity and sealing as below:    (1) The cylinder barrel should have sufficient strength to prevent permanent deformation under long-term rated operating pressure and short-term dynamic test pressure.    (2) The barrel should have sufficient rigidity to prevent bending caused by lateral force imposed by the piston and reacting force during installation.    (3) Reliable seal: The grade of dimensional tolerance and accuracy of geometric tolerance of cylinder inner surface, piston seal and supporting ring should be designed rationally to ensure reliable se...

How to choose, process, and install  hydraulic cylinder tubes   properly, in order to make the hydraulic line system work more energy-efficient, reliable, and have a longer life? This has become an important issue for hydraulic technologies. As one of the leading China hydraulic tube manufacturer and supplier,  Datong Hydraulic  specializes in manufacturing hydraulic cylinder tubes and carbon steel honed tube for many years, and has many years experience of hydraulic tube related technology and research. This article will briefly describe the hydraulic pipe selection, processing, installation, etc., with hope to help the customers in the hydraulic system industry who are in need. CHOOSE THE RIGHT MATERIAL AND SIZE OF HYDRAULIC TUBES The hydraulic cylinder tubes should be selected according to the system pressure, flow and application environment. Must pay attention to the strength of the tubing whether is enough, whether the pipe diameter and the wall thick...

The required barrel is a key part of hydraulic cylinder , and sometimes the direct acting component of hydraulic cylinder (when piston rod or plunger is fixed); the barrel, end cover and piston (plunger) form a sealed chamber for containing pressure oil and driving the load for acting; thus the barrel has requirements for strength, rigidity and sealing as below: (1) The barrel should have sufficient strength to prevent permanent deformation under long-term rated operating pressure and short-term dynamic test pressure. (2) The barrel should have sufficient rigidity to prevent bending caused by lateral force imposed by the piston and reacting force during installation. (3) Reliable seal: The grade of dimensional tolerance and accuracy of geometric tolerance of cylinder inner surface, piston seal and supporting ring should be designed rationally to ensure reliable seal and reduce wear. (4) The cylinder barrel to be welded should have good weldability to avoid cracking or excess...