DIN2391 ST45 Cold Rolling Cylinder Steel Tube Seamless Pipe

DIN2391 ST45 Cold Rolling Cylinder Steel Tube Seamless Pipe

1.Product name: DIN2391 ST45 Cold Rolling Cylinder Steel Tube Seamless Pipe

2.Section shape: round

3.Place of origin: China

4.Outer diameter: 30-250mm

5.Wall thickness: 2-30mm

6.Payment terms: T/T or L/C or as client's request

7.Trade terms: FOB yantai, or as client's request

8.Application: Widely used in hydraylic and pneumatic cylinder for automobile, engineering machinery, textile machinery, etc.

Main products

1.Seamless steel tube

Widely 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 also offer ascustomized seamless steel tube.

ld drawn/rolled steel tube

Grade: 20#  45#  16Mn  25Mn  27SiMn  E355  SAE1026

Standard: GB/T8713  GB/T3639  DIN2391  EN10305  ASTMA519

Range: 30-300mm

Length: 11m(max)

The cold process can change the thickness of tube to meet client's request and offer better mechanical property. 

 3. SRB&Honed steel tube

ID Tolerance: H8  H9

ID Roughness: RA0.4micron(max)

Length: 6m(max)

Inner roughness: Ra0.2-0.8um

Straightness: 1:1000 or customized

This process can improve the roughness of the inner tube to 0.2-0.8um and make inside tube more smooth which can be used for cylinder directly.

PRODUCT PROCESS

Xinpeng are equipped with JLB250T hydraulic cold drawn set, LD120 cold rolling set, annealing furnace, honed and SRB machine, polishing machine, and some other advanced testing machine to make sure high quality of products.

Dimensions Tolerance

Mechanical Property

Packing

1. bundle packing

2. marking as per customer's requests

3. paint on the pipe as per customer request

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.

Our service

 1. Cargo track service during transporting and feedback service after cargo is loaded on board

2. Flexible terms of payment

3. Big discount for repeat customers

4. Smooth delivering procedure

5. More than 20 years steel trading experience

6. Alibaba trade assurance supplier

FAQ

1.What’s your main market?

We have contacted with many countries all over the wold such as Korea, Iran, Ukraine, Pakistan and so on.

2.What’s your package?

Usually, we have standard export package with plastic bags, or wooden cartons or as client’s request.

3.What about your quality?

Strictly followed by ISO9001 system, all our products are in high quality control and tight tolerance.

What we can provied are not only seamless steel tube, but also cold drawn steel tube, cold rolled steel tube, honed steel tube, SRB steel tube, polished steel tube and so on.

If you are intrested in our products, pls feel free to contact us!