ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe

ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe

Product Details:

Place of Origin: Changzhou
Brand Name: Joyruns
Certification: ISO9001
Model Number: 25.4*2.77

Payment & Shipping Terms:

Minimum Order Quantity: 2Tons
Packaging Details: plastic packing, end caps, wooden box packing
Delivery Time: 30days
Payment Terms: L/C, T/T
Supply Ability: 2000Tons/Month
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Detail Information

OD Size: 6mm To 114.3mm Thickness: 1mm To 20mm
Standard: DIN2391, EN10305, EN10216, EN10210 Material: ST35, ST45, ST52
Type: Seamless Cold Drawning Precision Tube Delivery State: +N, +NBK,+C,+BKS,+GBK
High Light:

ST52.3 Seamless Precision Steel Tube

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ST52 Seamless Precision Steel Tube

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DIN17175 Extruded Steel Pipe

Product Description

ST52/ST52.3 DIN17175 Seamless cold drawing High precision Tubes

 

DIN 17175 St52.3 seamless boiler tube is widely used in boiler industry, petroleum, chemical industry, chemical fiber, metallurgy, medicine, machinery, paper, heat preservation, refrigeration, mechanical equipment, food, electricity, water, construction, aviation, aerospace, marine, shipbuilding, environmental protection and boiler heat exchangers.

 

St52 seamless tube is specially used for the heating surface tube of the medium and low-pressure boiler (working pressure not higher than 5.88 MPa, working temperature lower than 450 ℃). The seamless boiler tube can also be used as the heating surface tube, economizer, superheater, reheater and petrochemical industrial tube of the high-pressure boiler (the general working pressure is above 9.8 MPa, and the working temperature is between 450 ℃ and 650 ℃).

 

Chemical Composition:

 

Steel grade Chemical composition, as a percentage by mass
Symbol Material number C
max.
Si
max.
Mn P
max.
S
max.
St 30 Si 1.0211 0.10 0.30 <=0.55 0.025 0.025
St 30 Al 1.0212 0.10 0.05 <=0.55 0.025 0.025
St 35 1.0308 0.17 0.35 <=0.40 0.025 0.025
St 45 1.0408 0.21 0.35 <=0.40 0.025 0.025
St 52 1.0580 0.22 0.55 <=1.60 0.025 0.025
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%.

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Final supply conditions:

Designation Symbol Description
Cold finished (hard) BK Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation.
Cold finished (soft) BKW 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 BKS 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 The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized NBK The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

 

Condition on delivery:

Steel Grade BK BKW GBK NBK
Code No.

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min
St30 Si 400 8 330 12 280 30 290-420 30
St30 Al 400 8 330 12 280 30 290-420 30
St 35 440 6 370 10 315 25 340-470 25
St 45 540 5 470 8 390 21 440-570 21
St 52 590 4 540 7 490 22 490-630 22

 


ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe 0  ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe 1  ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe 2

 

ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe 3  ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe 4  ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe 5

 

 

ST52 ST52.3 Seamless Precision Steel Tube DIN17175 Cold Drawn Extruded Steel Pipe 6

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