DIN2391 Honed Seamless Steel Pipe

DIN2391 Honed Seamless Steel Pipe
Product Details

DIN2391 honed seamless steel pipe

Our company produces high quality DIN2391 honed seamless steel pipe. The available grades are DIN2391 St52, St35 and St45. The size range we can provide is 25-500mm O.D. x 2.0-50.0mm thickness. 

DIN2391 honed seamless steel pipe has attracted lots of importers from different countries in the world. We keep good cooperation friendship with plenty of companies basing on this kind of products.  

If you want to know any details, feel free to contact us.

Advantage of Product

1)Professional & skilled, reliable.
2)One-stop total solution
3)ready stock goods with fast delivery
4)Customizable: Non-standard sizes are also available
5)Small quantity is acceptable
6)Cash back: Refund or replacement for any product faulty

Material & Chemical Composition:
DIN2391 standard ST52, EN10305 standard E355, 16Mn, ASTM A106B, C20/20#, CK45

Product Name

DIN2391 honed seamless steel pipe

St45 steel 

pipe

St55  

steel pipe

St52 steel 

pipe

chemical 

analysis

C:=0.18; 

P:=0.05; 

S:=0.05

C:=0.25; P:=0.05; 

S:=0.05

C˜0.36; P:=0.05; S:=0.05

C:=0.20; Si=0.55;Mn=1.5;

P:=0.05; S:=0.05

Tensile Strength

+NBK,35-45MPa; +BK,=45MPa;+BKW,

=38MPa;+GBK,=32MPa

+NBK,45-55MPa; +BK,=55MPa;+BKW,

=48MPa;+GBK,=40MPa

+NBK,55-65MPa; +BK,=65MPa; +GBK,=50MPa

+BK,=60MPa;

+BKW,=55MPa;

Yield strength

+NBK,=24M Pa

+NBK,=26MPa

+NBK,=30MPa

-

Standard

DIN2391-1

Length

As customer's request

Packaging

Standard export packing, packed in woven bags, with two nylon slings, or can be customized as request

Heat Treatment/      Delivery Condition

Cold finished (hard)   BK(+C)
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation
Cold finished (soft)  BKW(+LC)
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding)
Cold finished and stress-relieved annealing BKS(+SR)
Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed  GBK (+A)
The last Cold forming process is followed by annealing in a controlled atmosphere.
Normalized  NBK (+N)
The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

Delivery Time

Within 35-50 days from receiving deposit

Payment Term

100% L/C at sight or 30% deposit, 70% balance against copy of B/L

Usage/Application

Pipes for automobile and motorcycle

Dimension tolerance:

Inner Dia (mm)

ID Tolerance (mm)

WT Tolerance (mm)

H7

H8

H9

H10

H11

30

+0.021/0

+0.038/0

+0.052/0

+0.084/0

+0.130/0

±5-10%

>30-50

+0.025/0

+0.039/0

+0.062/0

+0.100/0

+0.160/0

>50-80

+0.030/0

+0.046/0

+0.074/0

+0.120/0

+0.190/0

>80-120

+0.035/0

+0.054/0

+0.087/0

+0.140/0

+0.220/0

>120-180

+0.040/0

+0.063/0

+0.100/0

+0.160/0

+0.250/0

>180-250

+0.046/0

+0.072/0

+0.115/0

+0.185/0

+0.290/0

>250-315

+0.052/0

+0.081/0

+0.130/0

+0.210/0

+0.320/0

>315-400

+0.057/0

+0.089/0

+0.140/0

+0.230/0

+0.360/0

Product description

Processing Form

I. D

Length

Straightness

I. D Tolerance

I. D Roughness

Cold-rolled

30-100

= 12M

0.3-1.0

H8-H10

0.4-1.6

Cold-drawn

30-250

= 12M

0.3-1.0


0.8-1.6

Hone

40-500

= 12M

1000

H8-H9

0.4-0.8

SRB

40-400

= 7M

1000

H8-H9

0.1-0.4

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