Product Details

Company introduction:

Located in Yantai, our company Yantai Xinpeng Steel Pipe Co., Ltd, is in(APEC) Science& Technology Industrial Park, with convenient transportation. Established in Dec 1992, with registered capital of 5 million Yuan, we have more than 20 years experience in manufacturing and exporting steel pipe. Our company mainly produces various specifications of cold finished precision steel pipe, which are widely used in hydraulic Pneumatic cylinder for automobile, engineering machinery, textile machinery, printing machinery, oil drilling and other field. Standard:GB/T8713-88, GB/T3639-2000 or according to customers’ requirement. Material usual 20#,45#,16Mn,25Mn,27SiMn,St35,St52,etc.

Specifications:

1.Standard:GB/T8713,GB/T3639,DIN2391,EN10305,ASTMA519,ASTMA106-2006

2.Grade: 20#(aisi1020,ck20),45#(aisi1045,ck45),st52(16Mn,Q345D),25Mn(stkm13c-t),27SiMn

3.OD:30-250mm

4.ID tolerance:H7,H8,H9

5. Wall thickness:10%×ID

6.Surface roughness:Ra 0.02— 0.4μm

7. Delivery condition:BK,BKW,BKS,GBK,NBK

8.Ovality: ≤ 0.10-0.20

9.Curvature:0.3

Mechanical Property:

Delivery Condition	Cold drawn+ stress-relieved(BK+S)(SR)			Cold fished (hard)(BK)
Steel Grade	Tensile strength (Rm Mpa)	Yield strength	Elogation A5%	Tensile strength (Rm Mpa)	Elogation A5%
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
E355(Q345B,St52)	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5

Certificate:

Product Process:

Application:

1.Hydraulic Cylinder Tube---Used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT, ST52, CK45 and 1020. We can work and get the mechanical property of the clients need and extended the life of the hydraulic cylinder.

2.SRB tube ----- Used in Elevator,buffer and Hydraulic Cylinder .This kind tube have a better roughness inner the tube, ra0.2-0.4um and can use directly in the hydraulic cylinder tube.

Range: ID 50-250mm and Length can work at most 6M.

3.Cold finished tube---- Widely Used. Processing range 30-300mm, biggest length is 11M.

Our Advantage:

1. High quality seamless steel tube with reasonable price.
2. Wide excellent experiences with after-sale service.

3. Samples can be provided as your requirements.
4. Professional packing teams which keep every packing safety.
5. Every process will be checked by responsible QC which insures every product's quality.
6. Every process can be produced as to our clients' requirements.

7. Any questions can be answered in time after you told us.

8. Quick respond to your inquiry.