Specifications

1.skived and roller burnished pipe SRB tube better roughness
2.NO MOQ
3.Widly Used
4.Fast Shipment
5.Advantace Technology

skived and roller burnished pipe SRB tube better roughness

 

1 OD32-500mm W.T.3.5-80mm 2 ISO certificated DIN2391 En10305 3 Straightness:0.3~1mm/m 4 Inside Roughness:0.4~0.8um

steel pipes for hydraulic use

 

Material: C20, CK45, etc. also ST52 if given enough time. our products are widely used in hydraulic industry and is very popular both home and abroad.

 

And we can also make our products according to the customers' needs.

Variety

Processing	Cylinder diameter	Length /mm	Straightness	Size accuracy	Wall thickness/mm	Inner bore roughness
Cold-drawn	ID30~OD250	≤13M	0.3~1.0mm/m	H9-H11	±8%	0.8~1.6um
Honed tube	ID50~OD325	≤10M	0.3~1.0mm/m	H7-H9	±8%	0.4~0.8um

 

 Mechanics performance

Material	Tensile strength	Yield strength	Elongation	Hardness
Ck20	510 σ N/mm2	500σsN/mm2	5δs%	175HB
Ck45	660 σN/mm2	630σsN/ mm2	4δs%	207HB
ST52	580σ N/mm2	420σsN/ mm2	10δs%	190HB
27SiMn	840σ N/mm2	805σsN/ mm2	7.5δs%	230HB

 

Dimension tolerance

ID size	ID deviation (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
>315~400	+0.0527 0	+0.089 0	+0.140 0	+0.230 0

 

Production Process:

 

 Pretreatment : Pickling­—Phosphating—Saponification

 

 

 Cold drawn/cold rolled

 

 Annealing furnace——+SR

 

 Straightener—— Straightening

 

 Straightness inspecting

 

 Dimension inspecting

 

  

Sawing

 

 

 Skiving and Roller burnishing

 

Products inspecting

 

 

• Finished Products

 

 

 

 

 

About our service:

 

 

 

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

 

 

 

2.Flexible terms of payment by

 

 

 

3.Big discount for repeat customers

 

 

 

4.Smooth delivering procedure

 

5. Payment Terms: T/T , L/C And so on.

 

 

If there are any Question, please Feel free to send us inquiry.

 

We will provide the professional Explanation.

 

 

We always doing our Best!

Application:

 

hydraulic cylinder tube st52 din2391 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, forestrymachinery, etc.

 

About our service:

 

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

 

2. Flexible terms of payment by

 

3. Big discount for repeat customers

 

4. Smooth delivering procedure

 

5. Payment Terms: T/T , L/C And so on.

 

If there is any Question, please feel free to send us inquiry.

 

We will provide the professional Explanation.

 

We always do our Best!

 

 

 

 

 

Why you choose us as your best choice?

 

• Our quality is the top five in China. Raw material is mainly from some famous refinery steel mills, such as BAO STEEL, Tianjin, and Chengdu etc, which are the best and largest raw material manufacturers in China.
• we have been through ISO9001:2008 international quality system certification.
• Warranty period for our honed tubes and chrome bars is 2 years. For some special or important customers, the period is 5 years.
• All the orders, records of production and inspection would be kept for 5 years
• High Precision:

 

Honed tube (Roughness of tube is 0.2μm and straightness is less than 0.15/1000), piston rod (Plating thickness is 10-100 micron. Surface roughness is 0.2μm and straightness is also less than 0.15/1000)

 

Product details are completely according to International Standard, chrome rod and honed tube must be cut flatly, and no chrome marks on the surface of rod. (Most of domestic mills don’t do this in order to reduce cost)

 

 

 

• Delivery time is very fast. The average delivery time is 5-30 days after confirming the orders.
• 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.