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Help CenterCarbon Steel Seamless Cold Finished Precision Tube
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About our company:
Yantai Xinpeng Steel Pipe Co.,Ltd,located in (APEC)Science&Technology Industrial Park,Zhifu district,Yantai.Established in Dec1992,with registered capital of 5 million Yuan.Our company mainly produces various specifications of cold finished precision steel pipe,which are widely used in hydraulic and pneumatic cylinder for automobile,engineering machinery,textile machinery,printing machinery,oil drilling and other field.
In 2002,our company was equipped one set advanced CNC skived and roller burnished machine SRB-6000mm,several powerful honed machine,combined cold drawn,cold rolling,heat treatment and SRB process to produce the best quality products.our company has passed ISO9001 verified from 2008.
Commodity Description:
Name |
Carbon Steel Seamless cold finished precision tube |
| Delivery condition | BK,BKW,GBK,NBK,BKS |
Size |
OD:25mm-300mm WT:2mm-30mm |
Length |
2-4m,4-6m or according to the clients' request |
Materia |
10#,20#, 45#,25Mn,E355(Q345B, St52),27SiMn |
Standard |
GB/T8713,GB/T3639,DIN2391,EN10305,ASTMA519, ASTMA106-2006 |
ID tolerance |
H8,H9 |
MOQ |
5MT |
Package |
Bulk in master cartons, then on pallets, |
or according to customers' requirement | |
| Place of Origin | Shandong,China |
Payment |
L/C or T/T (30% in advance and 70& against the copy of B/L) |
Delivery |
Within 20 days after confirming the deposit |
Working Method |
Cold drawn/rolled, honed/SRB, polished |
ID 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 |
Delivery condition:
1.NBK(+N)
after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium
2. GBK(+A)
after cold forming, annealing in non oxidizing medium protective gas
3. BK(+C)
the final heat treatment after cold forming, therefore small steel pipe plastically, the plastically degree does not guarantee
4. BKW(+LC)
after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)
5. BKS(+SR)
have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again
Product Process:
1.Pickling/phosphating
2.Cold Drawn
3.Stress Relieve/Annealed
4.Sawing&Straightening
5.Straightness and Dimission Inspecting
6.Lathe
7.SRB/Honed
8.Surface Polishing
9.Finished products
10.Package
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 workshop
Our Certificate:
High Efficiency Service
1.365Days *24Hours phone and email in service.
2.Your inquiry will be replied in 24 hours
Choose Xinpeng,inquiry me to get best price.
Send Inquiry to This Supplier
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