Datong Hydraulic

 When it comes to hydraulic cylinders, the quality of the cyinder barrel directly impacts performance, durability, and efficiency. ​ E355 seamless tubes ​ stand out as a premium solution, offering superior strength, precision, and reliability compared to welded or inferior-grade alternatives. Why Choose a E355 Seamless Tubes?​ ​ ​1. Superior Strength & Durability​ ​Seamless Construction:​​ Unlike welded tubes, seamless E355 tubes have ​no weak points, ensuring uniform strength and resistance to high-pressure conditions. ​High-Quality Material:​​ E355 steel (EN 10297-1) provides excellent ​mechanical properties, including high tensile strength and impact resistance. ​Longer Lifespan:​​ The absence of welds reduces the risk of cracks, leaks, and premature failure, making it ideal for ​heavy-duty hydraulic systems. ​2. Precision Honing for Optimal Performance​ ​Smooth Inner Surface:​​ Honing achieves a ​fine surface finish (Ra 0.2–0.4 µm)​, reducing friction and wear on seals a...

  Precision Skiving Tubes   are made from heat treatment of cold drawn, and then skived and roller burnished. They usually can be used for manufacturing   custom hydraulic cylinder   especially for big bore size.Skiving and roller burnishing is finishing method that does not remove the material in the form of chips, but rather transforms the surface layer. Precision skiving tubes from DATONG HYDRAULIC are made of ST52.3 BK+S (E355SR) material – with standard of DIN2391, low-carbon steel grade with guaranteed weldability.  The manufacturing Process Of Precision Skived roller burnished tubes Seamless hot rolled hollows are obtained with controlled concentricity on an  rolling line and then drawn to precision tubes with significant cross-section reduction improving the geometry and strengthens of the tubes. The cold deformed tubes are then Inside skived and roller burnished (SRB) using state of the art equipment and tools supplied by well-known producers with ...

  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, ...

  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. ...

  A  hydraulic cylinder ,is a mechanical actuator used to give linear force through a linear stroke. It can be used in a variety of ways, and is commonly seen in manufacturing machinery, civil engineering, and construction equipment. There are two main types of hydraulic cylinders: tie rod cylinders and welded hydraulic cylinders.  Tie Rod Cylinders Tie rod hydraulic cylinders are not as complex in terms of design as welded body cylinders. Tie rod hydraulic cylinders use high-strength threaded steel rods in order to hold the end caps to the cylinder barrel. Small bore cylinders typically have four tie rods whereas larger bore cylinders can have as many as twenty tie rods in order to withstand the forces produced by the cylinder. Welded Body Cylinders Welded hydraulic cylinders have no tie rods. Instead, the barrel is welded directly to the end caps and the ports are welded to the barrel. The front rod gland is generally bolted or threaded into the cylinder barrel, which a...

Bore is the inner diameter of the  hydraulic cylinder . The size of the bore can calculate by checking how much force is generated. Bigger the bore size can generated large force and the small one generate less force. The Bore of the Hydraulic cylinder decides the all-out intensity of the cylinder. The bigger the drag, the more it can lift or push. On the off chance that you see or hear us discussing a "4-inch" cylinder, we are continually discussing the drag of the cylinder. The outside distance across (OD) is normally around 1/2″ bigger than the drag, yet it relies upon the divider thickness, so on the off chance that you quantified your cylinder all things considered and it quantifies 4-1/2″, you can be almost certain its a 4″ Bore cylinder. Datong Hydraulic  is a professional manufacturer in producing and designing hydraulic cylinder ,besides, we also produce  honed tubes  and  chrome plated bars , if you have any inquiry about  hydraulic cylinder tube ...

  Tie rod style   hydraulic cylinders   u se high strength threaded steel rods to hold the two end caps to the   cylinder barrel . This method of construction is most often seen in industrial factory applications. Small bore cylinders usually have 4 tie rods, while large bore cylinders may require as many as 16 or 20 tie rods in order to retain the end caps under the tremendous forces produced. Tie rod style cylinders can be completely disassembled for service and repair. The National Fluid Power Association (NFPA) has standardized the dimensions of hydraulic tie rod cylinders. This enables cylinders from different manufacturers to interchange within the same mountings. Tie rod cylinders are usually a bulkier design but are more often offered as standard series with short delivery times, so are more readily available. High-strength  chrome steel rods  are used, so most cylinders of this design are rated for no higher than 3,000 psi. These designs are most o...

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...

DESIGN The  hydraulic cylinders  first designed by a team of hydraulic cylinder engineers, taking into account the use of the hydraulic cylinder and the environment that it will be in. This dictates materials, coatings, seals and other specialist parts. Hydraulic systems are designed in compliance with any external legislation that relates to the industry that it is being designed for. The offshore industry in particular has a number of requirements, which Apex Hydraulics can design in compliance with.   MACHINE SHOP Once the design has been finished, the machine shop engineers start producing the cylinder. Cylinder rods and other parts are bored to minutely accurate measurements using highly specialized machinery. Cylinder rods are chromed or coated with specialist coatings company such as  Datong Group .   FITTING DEPARTMENT The fitting department puts all the components together (rod, pistons, tubes and seals). Purchasing from a wide variety of high-quality m...

Hydraulic cylinders  are an integral part of the hydraulic system. They are a mechanical actuator that provides the unidirectional force. Integration of hydraulic cylinders will eliminate the presence of levers and gears. Both mobile(hydraulic presses, cranes, forges, and packing machines) and industrial systems(agricultural machines, construction vehicles, marine equipment) utilize hydraulic systems. Among them, most of the application use hydraulic cylinders for lifting, picking and gripping.  Every hydraulic system will contain basic components like pumps, cylinders, valves, filters, etc.. Hydraulic cylinder is one of the least complicated components in the list. So, they are easy to repair and maintain. A person having basic knowledge about the hydraulic system can perform hydraulic cylinder repairing. Before explaining the repairing of cylinders, I will give you brief details on the causes of hydraulic cylinder failure. Damage of seals is a common reason that creates...

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...