China supplier DIN2391 st45 burnished seamless high precision steel pipe

Production

Steel pipe / steel tube

Standard

DIN2391,  EN10305, GB/T 3639, GB /8162 ASTM A519 ,A106 ,AISI 1020,4140

Inner  Diameter

30mm~250mm

Wall Thickness

0.5mm~18mm

Material

10#~45#,16Mn,Q195~Q345,ST35~ST52

 Length

as customers required

Surface treatment

As customers required

 Package

 1. bundle packing

2. marking as per customer's requests

3. paint on the pipe as per customer request

4. pipe caps as customer reques

Min Order Quantity

According to customer's requirement

Payment terms

L/C, T/T

Contact

If you have any questions, please feel free to contact me.

Delivery conditions

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 plastic, the plastic 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

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

C

Si

Mn

S

P

Cr

10#

0.07-0.13

0.17-0.37

0.35-0.65

≤0.035

≤0.035

≤0.25

20#

0.17-0.23

0.17-0.37

0.35-0.65

≤0.035

≤0.035

35#

0.32-0.39

0.17-0.37

0.35-0.65

≤0.035

≤0.035

45#

Steel grade

Chemical composition(%)

0.50-0.80

≤0.035

≤0.035

Q345B/ST52

≤0.22

≤0.55

≤1.6

≤0.025

≤0.025

≤0.25

Advantages

1.Super quality

2.Competitive price

3.High daily output

4.Good transportation

5.Short delivery time

6.Relevant certificates will be offered

7.Manufacturer,Good after sales service

Packaging Detail:

1. bundle packing

2. marking as per customer's requests

3. paint on the pipe as per customer request

4. pipe caps as customer reques

Delivery Detail:

10days more, or according to the customer’s request

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material

2.100% Dimension & Visual Examination 

3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test

4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test  (ET or UT) 

5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)

6.Straightness Test  (optional)

7.Roughness Test (optional)

8.Intergranular Corrosion Test(optional)

9.Impact Test (optional)

10.Grain Size Determinations (optional)

NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.