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Cold Drawn Precision Seamless Steel Pipes DIN2391

Basic Info

Model No.: DIN2391

Product Description

Torich is Specialized in Producing Cold Drawn Carbon Seamless Steel Pipe,

High Precision Steel Tube and Pipes are manufactured according to technical standard of

DIN2391 with steel grade St35, St45, St37.0, St37.4, St52.0, St 30SI, etc

We are manufacturer of Seamless Steel Tubes in China, if you want to buy Seamless Carbon Steel Tube, Oil Cylinder Steel Tube, Precision Seamless Steel Tube, Hydraulic Cylinder Steel Tube, please contact us.

High Precision Steel Pipes Grade:

St 30SI, St 30 Al, St35,St45, St52, Other materials upon agreement with customers.



1. High Precision Steel Tubes Standard:

DIN2391 Precision Seamless Steel tubes for precision hydraulic systems

DIN2393 Precision Welded Steel tubes for precision hydraulic systems


2. High Accuracy Steel TubesSteel Grade:
St 30SI, St 30 Al, St35,St45, St52, other materials upon agreement with customers.



Steel Grade and Chemical Compositions:

Steel Grade C Si Mn P S
max max
max max
ST35 0.17 0.35 ≥0.40 0.025 0.025
ST45 0.21 0.35 ≥0.40 0.025 0.025
ST52 0.22 0.35 ≥1.60 0.025 0.025


3. Cold Drawn Precision Seamless Steel Pipes Production method:
Cold Drawn on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance

4.Size range:
O.D.:20-350mm W.T.:1-15mm L:max12000mm

5. Packing:
In Hexagonal Bundles, wth anti-rust oil protection, with seaworthy packing

6.Deliver condition:

1). BK Cold finished (hard)
2). BKW Cold finished (soft)
3). BKS Cold finished and stress relieved
4). GBK Annealed
5). NBK Normalized
Mechanical properties at room temperature
Steel Grade Minimum values for the delivery condition
BKW BKS GBK (+N) NBK
ST35 480 6 420 10 420 315 14 340-470 235 25
ST45 580 5 520 8 520 375 12 440-570 235 21
ST52 640 4 580 7 580 420 10 490-630 355 22


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100% Eddy Current Test and Ultrasonic Test:

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Chemical Composition Inspection:

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Mechanical Properties Inspection:

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Contact us if you need more details on High Precision Carbon Steel Pipes. We are ready to answer your questions on packaging, logistics, certification or any other aspects about High Precision Steel Tubes、High Accuracy Steel Tubes. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Seamless Steel Tubes