Honed Tubing

Instruction

Production Method:
TORICH is honed tube manufacturer and honed tube supplier from China, which is focusing on quality, service and customer satisfaction among honed tube suppliers in China.
Honed Tube is also called honing tube, is usually produced by ID Honed process based on Precision Seamless Steel Tube as raw material, production method can be ID Honed or Skiving Roller Burnished.

TORICH Honed Tubing is usually based on Cold Drawn Hydraulic Cylinder Tube according to EN10305-1 E355 SRA, ID finished by SRB or Honing.

 

Chemical Composition Analysis:

C %	Si%	Mn%	P%	S%	C.E%
0.19	0.31	1.44	0.014	0.02	0.43

 

Mechanical Properties:

Size	Yield Strength ReH N/mm²	PSI	Tensile Strength Rm N/mm²	Elongation A5%
All diameter	≥520	≥75000	≥520	Min15%

 

Equivalent Steel for E355:

EN	DIN	AFNOR	SAE/ASTM	Chinese
E355	ST52-3	E36-4	1024	Q345B/Q345D

 

Heat Treatment:
The tubes are delivered in stress and relieved conditions(+SR).
Other heat treatment requirement is available for negotiation.

Inside Roughness:
The inside roughness (Ra) for skived and roller burnish tubes is less than 0.25μm.
For honed tubes the inside surface roughness is less than 0.6μm

Straightness:
The straightness deviation is less than 1/1000mm.
For the tube tubes with length smaller or equal to 6m the total deviation is less than 3.5mm, for each meter above 6m the tolerance have to be increased by 0.5mm.

Ovality:
The ovality is within the limits of ID tolerance.

Diameter Tolerance:
The outer diameter is according to technical standard of EN10305-1, ISO-H8 standard.
Other tolerance can be supplied by customers’ request.

Eccentricity:
The eccentricity is max ±10% of the WT according to the standard EN10305-1, the aim is to meet the max of ±7.5% of the Wall Thickness (WT)

Production Process for honed cylinder tube:
Cold Drawn or Hot Rolled Seamless Steel Tubes →
Cold Drawing/Cold Rolling  →
Heat Treatment Annealing/Bright Annealing → (Repeat)
ID Honing or ID Roller Burnish → (Repeat) to final dimensional tolerances and ID roughness
Final inspection → Ready to Ship

 

Tolerances from ISO286 for H8 in μm:

ID mm	Upper	Lower
40-50	39	0
＞50-80	46	0
＞80-120	54	0
＞120-180	63	0
＞180-250	72	0
＞250	Consult our sales team

 

Delivery Length:
Production capability for length is 3.0-10 m.
Cutting to short length is achievable by customer’s specific requirement.

Honed Pipe are usually used in the following scope:
1: Crane
2: Excavator
3: Bulldozer
4: Forklift
5: Pneumatic cylinder barrel
6: Oil Well Pump Pump Tubing
7: Jack cylinder
8: Micro motor housing
9: Car Drive Shaft
10: Woodworking Hydraulic Machinery
11: Water gate opener
12: Lifting machinery
13: Coal mine underground hydraulic prop cylinder

 

Workshop for Honed Tubing:

Products Show from mass production:

Inspection and Testing:

Delivery and Packing: