GBT3639 20# St37 Cold Drawn Telescopic Cylinder Honed Tube

Commodity name: GBT3639 20# St37 cold drawn telescopic cylinder honed tube

Honed tube parameter:

1.Raw material:10#,20#,35#,45#,Q345,16Mn,25Mn,27SiMn,42CrMo,Aisi1020,Aisi1045,st35,St45,St52etc

2.ID:30-250mm

3.ID tolerance:H8,H9

4.Surface roughness:Ra 0.02— 0.4μm

5. Final supply condition:cold drawn and stress-relieved(BK+S)

6. Machining allowance:0.5-1.5mm

7.Wall thickness:10%×ID

Suitable for hydraulic cylinder tubes,honing or skiving and roller burnishing cylinder tubes and other applications

Dimensions tolerance

Tolerance on ID

Commercial length

Delivey conditions:

• Standard packing with plastic caps and strapped bundles.
• Commercial length 2000~10500mm,custom lengths upon request
• Surface protection

About our service:

1.cargo track service during transporting and feedback service after cargo is loaded on board

2.flexible terms of payment by T/T and L/C

3.big discount for repeat customers

4.smooth delivering procedure

we can supply all kinds of steel pipes such as hot rolled seamless steel pipes ,cold drawn seamless steel pipes,honed pipes,cold drawn welded tubes(DOM tubes).

Welcome to inquiry at any time, we will try our best to serve you.

Management System Certification:

Production Process:

• Pretreatment :  Acid cleaning- Parkerizing

• Cold drawn/cold rolled
  

• Annealing furnace—— stress-relieving (+SR)

• Straightener—— Straightening/ Leveling

• Dimension inspecting

• Sawing off not good parts

• Lathe

• Surface Polishing

• Products inspecting

•  Finished honed tube

Application:

widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, card sets of joints, pipe joints, rubber machinery, forging machinery, casting machinery, engineering machinery, automotive high pressure steel pipe concrete pump, sanitation vehicle, automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, the internal combustion engine, air compressor, construction machinery, forestry machinery, etc.