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ASTM A53 GB/T Cold Rolled Precision Seamless Steel Tube

China ASTM A53 GB/T Cold Rolled Precision Seamless Steel Tube, Find details about China Cold Rolled Seamless Tube, Precision Seamless Steel Tube from ASTM A53 GB/T Cold Rolled Precision Seamless Steel Tube

Trademark
HYT
Transport Package
Snakeskin Bag/Wooden Carton
Specification
ID/OD: plus or minus 0.025 mm
Origin
China
HS Code
7304319000
Trademark
HYT
Transport Package
Snakeskin Bag/Wooden Carton
Specification
ID/OD: plus or minus 0.025 mm
Origin
China
HS Code
7304319000

Company can produce outer diameter 4mm-273mm, high precision cold drawn steel tube, cold-rolled steel tube, precision steel pipe, stainless steel tube, stainless steel tube wall thickness 0.1mm-25mm, accuracy up to /+0.025 mm, roughness of 0.2. 

 

It is mainly used in hydraulic system pipes, automobile manufacturing pipelines, military industry, construction machinery, railway locomotives, aerospace, shipbuilding, petrochemical, power plants, boiler equipment, etc..

 

There are 6 main characteristics of our product: 

1. There is no oxide layer on the inner wall and outer wall. 

2. No leakage under tremendous pressure. 

3. High accuracy. 

4. High finish. 

5.Cold bending without deformation. 

6.No combustion, shrinkage, flattening, no cracks.

 

production standards: 

GB/T 3639;GB/T 1591;GB/T 699;DIN2391;EN10305-1;ASTM A519

 

condition of delivery :

condition of delivery

Code

Explain

Cold drawing or cold rolling / hard

 +C

Final cold drawing or cold rolling without heat treatment

Stress relieving annealing after cold drawing or cold rolling 

 +SR

After final cold drawing or cold rolling, the steel tube is eliminated by   stress annealing

annealing

 +A

After final cold drawing, the steel tube is annealed

normalizing

 +N

After final cold drawing, the steel pipe is normalized


20#,45#, Q345B,Q345D,25Mn,27SiMn,E355,SAE1026,STKM13C, E460, 4130, 4140


Chemical composition:

 

  Chemical composition, % 

steel grade 

C

Si

Mn

P 

S

Cr

Ni

V 

Al

 

≤

≥

20#

0.17-0.24

0.17-0.37

0.35-0.65

0.035 

0.035 

0.250 

0.250 

/

/

45#

0.42-0.50

0.17-0.37

0.50-0.80

0.035 

0.035 

0.250 

0.300 

/

/

Q345B

≤0.2

≤0.5

1.00-1.60

0.030 

0.030 

0.300 

0.250 

0.08

/

Q345D

≤0.2

≤0.5

1.00-1.60

0.030 

0.030 

0.250 

0.250 

0.150 

0.015 

25Mn

0.22-0.29

0.17-0.37

0.70-1.00

0.035 

0.035 

/

/

/

/

27SiMn

0.24-0.32

1.10-1.40

1.10-1.40

0.035 

0.035 

0.300 

0.300 

/

/

E355(ST52)

≤0.22

≤0.55

≤1.6

0.025 

0.025 

0.250 

0.250 

/

/

SAE1026

0.22-0.28

0.15-0.35

0.60-0.90

0.040 

0.050 

/

/

/

/

E460

≤0.22

≤0.60

1.20-1.60

0.030 

0.030 

0.300 

0.800 

0.20 

0.02

4130

0.28-0.33

0.15-0.35

0.40-0.60

0.040 

0.040 

0.80-1.10

/

/

/

4140

0.36-0.43

0.15-0.35

0.75-1.00

0.040 

0.040 

0.80-1.10

/

/

/

 

Mechanical property

steel grade 

Delivery status

 +C

 +SR

 +A

 +N

Rm/Mpa

A/%

Rm/Mpa

Rel/Mpa

A/%

KV2/J

Rm/Mpa

A/%

Rm/Mpa

Rel/Mpa

A/%

KV2/J

20(ST45)

550

5

520

375

12

-

390

21

440~570

255

21

-

45

645

4

600

450

6

-

590

14

540

340

18

-

Q345

680

8

580

450

10

27

450

22

490~630

355

22

34

25Mn(SAE1026)

650

6

560

430

10

-

430

20

460

300

20

-

E355(ST52)

680

8

580

450

10

27

450

22

490~630

355

22

34

27SiMn

750

4

650

520

8

-

600

10

650

430

14

-

E460

  

690

620

13

       

 

Note: Rm: tensile strength;  Rel: lower yield strength;  A: elongation;

KV2: shock absorption energy.

 

Q345 shock absorption energy in accordance with B, C, D, E, respectively, corresponding to  20°C,0°C,-20°C,-40°C.

 

size range of cold drawing and cold rolling (unit: mm)

ID

Thickness

3.5

5

6

7.5

10

12.5

15

17.5

20

22.5

25

40

           

45

           

50

           

50.8

           

55

           

60

           

63

           

65

           

70

           

75

           

76.2

           

80

           

85

           

88.9

           

90

           

95

           

100

           

101.6

           

105

           

110

           

114.3

           

115

           

120

           

125

           

127

           

130

           

135

           

140

           

145

           

150

           

152.4

           

155

           

160

           

165

           

170

           

175

           

177.8

           

180

           

185

           

190

           

200

           

210

           

220

           

230

           

240

           

250

           

* intermediate specifications and inner diameters greater than 250mm specifications can also be customized

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