Specifications
Cold drawn din 2391st52 skived hone tube MOq:10MT1 ID30-250mm W.T.2-30mm
2 ISO DIN2391 En10305
3 Straightness:0.3~1mm/m
Commodity name: Cold drawn din 2391st52 skived hone tube MOq:10MT
Introduction:
hydraulic cylinder tube st52 din2391 is a kind of after cold rolling processing of a kind of high precison steel tube, full name cold rolled precision seamless steel tube. Precision seamless steel tube wall inside and outside the precision seamless steel pipe seamless steel pipe without oxidation layars, under high pressure without lea, high precision, high finish, cold bending deformation, flaring, flattening without cracks,etc, it is mainly used to produce pneumatic or hydraulic components products, such as a cylinder or cylinder, are made seamless tube. the chemical composition of precision seamless steel tube with carbon sulfur C,Si, Mn, S, P, Cr.
The difference between precision steel pipe and seamless pipe:
1. the seamless steel tube with obvioue difference is that dimensional accuracy, can be up to 0.1mm.
2. high precision steel pipe diameter surface finish, the customer without processing can be used directly and ordinary seamless steel tube to the customer and lather, polishing processing.
Features:
hydraulic cylinder tube st52 din2391 inside and outside the wall without oxidation layer, under high pressure, no leakage, high precision, high finish, cold bending deformation, flaring, flattening without cracks, surface rust proffing
1. The smaller outer diameter
2. High precision to do small batch production
3. Cold drawn finished products of high precision, good surface quality
4.The steel pipe transverse area is more complex
5. Steel pipe is superior performance, dense metal
Variety
Processing | Cylinder Diameter | Straightness | Size Accuracy | W.T/mm | Inner Bore Roughess |
Cold drawn/ cold rolled | ID30-250 | 0.3 | H9-H11 | ±10% | 0.4~1.6um |
Honed tube | ID50-250 | 0.3 | H7-H9 | ±10% | <0.4um |
Mechanics performance
Material | Tensile strength | Yield strength | Elongation | Hardness |
Ck20/20#/AISI1020 | >520 N/ mm2 | >375 N/mm2 | >15% | >85HB |
Ck45/45#/AISI1045 | >600 N/ mm2 | >520 N/ mm2 | >15% | >85HB |
ST52/16Mn/Q345D | >600 N/ mm2 | >520 N/ mm2 | >15% | >85HB |
25Mn/STKM 13C-T | >600 N/ mm2 | >530 N/ mm2 | >15% | >85HB |
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 |
Delivey conditions:
- Standard packing with plastic caps and strapped bundles.
- Commercial length 2000~10500mm,custom lengths upon request
- Surface protection
We can supply cold drawn/cold rolled seamless tube,honed tube,hydraulic pipe,hydraulic cylinder tube.
- Pretreatment : Acid cleaning- Parkerizing
- Cold drawn/cold rolled
- Annealing furnace—— stress-relieving (+SR)
- Straightener—— Straightening/ Leveling
- Straightness inspecting
Dimension inspecting

- Sawing off not good parts

LatheSurface
Polishing
Honed/SRB
Finished products
Other products
http://www.china.cn//product-detail/steel-tube-6-cold-drawn-with_1616196827.html
Any need, please feel free to contact us!!
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.
Mechanical Properties:
Condition | Materail Grade | T.S (MPa) | Y.S (MPa) | Elongation(%) |
BKS | ST35 (10#) | ≥420 | ≥315 | ≥14 |
BKS | ST45(20#) | ≥520 | ≥375 | ≥12 |
BKS | ST52(16Mn) | ≥580 | ≥420 | ≥10 |
GBK | ST35 (10#) | ≥315 |
| ≥35 |
GBK | ST45(20#) | ≥390 |
| ≥32 |
GBK | ST52(16Mn) | ≥490 |
| ≥30 |
NBK | ST35 (10#) | 340-470 | ≥235 | ≥32 |
NBK | ST45(20#) | 440-570 | ≥255 | ≥30 |
NBK | ST52(16Mn) | 490-630 | ≥335 | ≥28 |
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.
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