Commodity Specifications:

1.Commodity name:cold drawn ck20 weldged tubing

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

3.Grade: 10#(St37/St37.2/St35.8),20#(aisi1020,ck20,St42-2/St45-8/St45-4),

45#(aisi1045,ck45,ASTM A1045),st52(16Mn,Q345D),25Mn(stkm13c-t),27SiMn

4.OD:30-250mm;

5.ID tolerance:H8,H9,H10

6. Wall thickness:10%×ID

7.Surface roughness:Ra 0.02— 0.4μm

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

9.Package: steel strip bundles, black paint coating, beveled ends or plain

10.Payment Terms: L/C or T/T(30% deposit and 70% balance against B/L copy)

11.Price Item:EXW,FOB,CFR or CIF

12.Delivery Time: Usually 15 working days after order confirmed& getting T/T deposit or original L/C

Mechanical Property:

ID Tolerance:

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

Certificate:

Product Process:

About our company:

Established in Dec 1992, with registered capital of 5 million Yuan, Yantai Xinpeng Steel Pipe Co.,Ltd has 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.

We Have passed ISO9001 verified from 2008,each tube of ours is strictly in quality control that can assure the product quality of Xinpeng.

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.