Ck20 seamless high precision steel tube for automobile

Product Name

Standard:

DIN 2391 ,ASTM A519 ,ASTM A106,EN 10305

Production according to customer requirements

Outer Diameter:

30mm-250mm

Wall Thickness:

2mm-30mm

Length:

according to clients’ requirement

Tolerance:

H8-H10

Surface:

According to the customer’s acquirement

Outside Coating:

oil, as per required by customer

Test/Inspection:

Ultrasonic test ; Hydrostatic test ,eddy current ,mechanical property test

Payment terms:

T/T,L/C

Price terms:

FOB,CIF

Package:

Standard export seaworthy package or as required.

Delivery time:

25days

Place of origin :

China

Port :

Yantai/qingdao

Market:

South America, Asia, Africa, Mid East,

Productive technology:

cold rolled, cold-drawing, hot piercing

Min Order Quantity:

Normally 5 Ton or according to customer's requirement.

Production Capacity:

500tons /month

Ends:

plain end or beveled end with cap or steel rings,thread with couplings or sockets,plastic bags, wooden boxes if required

Certificate:

ISO9001-2008

Steel Grade:

10#-45#,st35-st52,q345,25Mn

Qualification:

Independent import and export qualifications

Others:

1.Special design available according to requirement;

2.Anti-corrosion and high-temperature resistant with black painting;

3.All the production process are made under the ISO9001:2008 strictly.

4.We have professional pipe fittings and steel pipes production equipment in China, all of products are produced by ourself, so we can give you BEST price with BEST quality, hope we will co-operate with each other based on mutual benefits.

5. best Raw material

6.Abundant stock and prompt delivery

7.Rich supply and export experience, sincere service

8.Reliable forwarder, 2-hour away from port.

Delivery 
condition

cold finished(hard)(BK)

Cold drawn and stress-relieved(BK+S)

Steel grade

Rm MPa

Elongation
A5(%)

Rm MPa

ReH MPa

Elonggation
A5(%)

St45

≥550

≥5

≥520

≥375

≥15

20#

≥550

≥8

≥520

≥375

≥15

St52 (E355)

≥640

≥5

≥600

≥520

≥14

SAE1026

≥640

≥5

≥600

≥510

≥15

STKM 13C

≥550

≥8

≥520

≥375

≥15

Q345B

≥640

≥5

≥600

≥520

≥14

CK45

≥640

≥5

≥600

≥520

≥10

ID size

ID deviation (mm)

H7

H8

H9

30

+0.021

0

+0.033

0

+0.052

0

>30~50

+0.025

0

+0.039

0

+0.062

0

>50~80

+0.030

0

+0.046

0

+0.074

0

>80~120

+0.035

0

+0.054

0

+0.087

0

>120~180

+0.040

0

+0.063

0

+0.100

0

>180~250

+0.046

0

+0.072

0

+0.115

0

>250~315

+0.052

0

+0.081

0

+0.130

0

>315~400

+0.0527

0

+0.089

0

+0.140

0

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.