Honed Tube

The honed tubes suitable for various kinds of Precision Mechanical Tube, Honed Cylinder Tubing and Hydraulic Cylinder, Construct use Multi Joint Tube, Steel Axis Pipe, Injection Machine and Robotic Arm.

Chrome-plated honed tube
Chrome-plated honed tube

Chrome-plated refers chromium electroplating chrome-plated, there are two kinds of a decorative chrome and a hard chrome.

Chrom plate rod
Chrom plate rod

Our Hard Chrome Plated Rods are able to withstand the harshest of applications.

Ready to honed tube
Ready to honed tube

Our product range also comprises of Pneumatic Honed Tubes, Cold Drawn Steel Tubes and Honed Tubes.

Hydraulic Cylinder Honed Tube
HydraulicTubes

Hydraulic tubes are used to improve the strength of steel, toughness and hardenability performance.

Honed Tubes are ready to use for hydraulic cylinder applications without further ID processing.

Hydraulic cylinder

A Hydraulic cylinder (also called a linear hydraulic motor) is a echanical actuator that is used to give a unidirectional force through a unidirectional stroke. It has many applications, notably in engineering vehicles.

  • OEM in accordance with client's drawing or requirement.
  • Certificate by CCS, BV, GL, Lloyd’s, DNV, etc.
  • Working Pressure:from 70 bar to 700 bar

Seamless Honed Tubes (Steel) with a micro-finish and highly accurate in bore size within tolerance H7 or equivalent.

Grade: ST 52, ST52.3, CK45, E355, 16Mn, STKM13C, SAE1020, SAE1026, SAE1045

Size range:

Type:

Chemical composition(%)
Si(Max) Mn (Max) C Max) P (Max.) S (Max)
0.55 1.60 0.22 0.025 0.25

Mechanical properties:
Tensile strength
Min
Yield Point
Min
Elongation
% Min
580 N/mm2 420 N/mm2 10

Marking: SunnySteel, ID, OD

Length: unfixed length or fixed length

Package: banding with steel strips, braiding parcel at outside

Conservation: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends.

Impact test: -20℃, 27 J (only for special requirement)

High precision cold drawn tube(ready to honed tube) can also be supplied.

Tolerance standard:

Different sizes of ready to use honed tube are available.

ID(mm) TOLERANCE(mm)
H7 H8 H9 H10
30 +0.021/0 +0.033/0 +0.052/0 +0.084/0
30 - 50 +0.025/0 +0.039/0 +0.062/0 +0.100/0
50 - 80 +0.030/0 +0.046/0 +0.074/0 +0.120/0
80 - 120 +0.035/0 +0.054/0 +0.087/0 +0.140/0
120 - 180 +0.040/0 +0.063/0 +0.100/0 +0.160/0
180 - 250 +0.046/0 +0.072/0 +0.115/0 +0.185/0
250 - 315 +0.052/0 +0.081/0 +0.130/0 +0.210/0
315 - 700 +0.057/0 +0.089/0 +0.140/0 +0.230/0

This will provide long piston seal life and prevent failure of the cylinder. The tube material is selected on the basis of application & working pressure.

The seamless tube for hydraulic cylinders, obtained from high quality cold drawn tubes, available in a wide dimensional range.

Hard Chrome Plated Tube-Rod
Hard Chrome Plated Tube-Rod
Equivalent Standards 
EN 10305-1 Material
No.
DIN 2391 STAS AFNOR BS UNI EN 10025 JIS GOST 19281-89 AISI SAE ASTM
E355 1.0580 St52-3 OL52-3 E36-4 4360-50D Fe510 SM490A 17G1S 1024

E355+SR (EN 10305-1) / St52-3 BK+S (DIN 2391)



Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
How to calculate a steel pipe and tube theoretic weight
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.
Condition on delivery:

It refers to the state of final plastic deformation or final heat treatment of the delivered product. The hot-rolled or cold drawn (rolled) state or manufacturing state generally delivered without heat treatment; the heat-treated state after heat treatment delivery, or the normalizing, tempering, solid solution, annealing according to the type of heat treatment status.

Delivery status Abbreviation Description

Cold-finished/hard
(cold-finished as-drawn)

BK No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft
(lightly cold-worked)
BKW After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed GBK After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized NBK The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.

Delivery according to actual weight or delivery according to theoretical weight

  • Actual weight - at the time of delivery, the weight of its product is delivered according to the weighing (weighing) weight;
  • Theoretical weight - The weight of the product at the time of delivery is calculated from the nominal size of the steel.
 


SUNNY STEEL

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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