DIN2391 St52.3 H7 H8 H9 Seamless Honed Tube
Guangzhou Kingmetal Steel Industry Co., Ltd.- After-sales Service：Change
- Warranty：10 Year
- Type：Seamless
- Technique：Cold Drawn
- Material：Carbon Steel
- Surface Treatment：Polished
Base Info
- Model NO.：DN50
- Usage：Hydraulic,Automobile Pipe, Machinery Industry
- Section Shape：Round
- Transport Package：Standard Seaworthy
- Specification：OD30-420mm
- Trademark：KM,OEM
- Origin：China
Description
Basic Info.
Model NO. DN50 Usage Hydraulic/Automobile Pipe, Machinery Industry Section Shape Round Transport Package Standard Seaworthy Specification OD30-420mm Trademark KM/OEM Origin ChinaProduct Description
DIN2391 ST52.3 H7 H8 H9 Seamless Honed TubeSeamless Steel Honed Tube is made of JIS STKM13C/ DIN ST52/ ASTM A106/ SAE1020 and welded pipe: DIN ST52.3 are also offered. Seamless Steel Hydraulic Cylinder Honed Tube withstands higher pressure than welded tube without splits. But, roundness of welded honed barrels is superior to seamless pipe. After honing, carbon steel cylinder honed tube of mechanical structure use has precision diameter, smooth surface, and excellent performance of oil storage. This kind of Hydraulic Cylinder Tube and Pneumatic Cylinder Tube work smoothly without pauses and has longer working life in cylinders. Applies to hydraulic cylinders tube, pneumatic cylinders tube, forklift, crane, excavator, punching machine, and other kinds of labor-saving automatic mechanical engineering.
OD : Ø 30~420mm
ID : Ø 18~350mm
Length : 3000~8000mm
Special Length : 13M
Surface Roughness :Ra0.4-Ra0.8
ID Accuracy : H7, H8, H9
Standard and Optional Testing:
Visual and dimensional test 100%.
Eddy current test 100% acc. to EN 10246-3.
Ultrasonic test 100% acc. to EN 10246-7.
Chemical composition.
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| St 52 (DIN1.0580) | 0.22 max | 0.55 max | 1.60 max | 0.025 max | 0.025 max |
Mechanical properties
| Grades | Delivery Conditions | Tensile Strength Rm (Mpa) | Yield Strength R2 (Mpa) | Elongation in the longitudinal direction Al (%) |
|---|---|---|---|---|
| St 52 | +C (BK) | 640 min | / | 4 min |
| St 52 | +LC (BKW) | 580 min | / | 7 min |
| St 52 | +SR (BKS) | 580 min | 420 min | 10 min |
| St 52 | +A (GBK) | 490 min | / | 22 min |
| St 52 | +N (NBK) | 490-630 | 355 min | 22 min |
Package:
1. Bundle Packing.
2. Plain end or vanished as per customer's request.
3. Wrapped in waterproof paper.
4. Sackcloth with several steel strips.
5. Pack in heavy tri-wall boxes.
Mill Test Certificate:
The product is supplied with 3.1.B inspection certificate,according to the standards EN 10204 and ISO 10474.
