DIN 17100 St52-3 LSAW Pipe

ST52-3 is equivalent to the domestic grade Q345 and the European standard grade S355. The new material number for (16mn) St52-3 is 1.0570, and the old material number is 1.0841. ST52-3 welded pipes are low-alloy high-strength steel pipes, mainly used in civil construction, underground engineering, bridges, marine engineering, as well as in automotive and machinery manufacturing.

DIN17100 ST52.3 LSAW Welded Pipe Specification

Standard	DIN17100
Sizes	O.D. (4-190 millimeter) x W.T. (0.5-15 millimeter)
End	Screwed, Beveled, Threaded, Plain
Type	Welded | ERW | LSAW
Length	Supplier in Max 6000 mm ; Single Random, Double Random, Cut to length
Surface Finish	2B, No.1, No.4, No.8 Mirror Finish
Schedule Thickness Ranges	SCH XS, SCH 40, SCH 80S, SCH 5, SCH 80, SCH XXS, SCH 160, SCH10, All Schedules
Delivery Condition	Annealed & Pickled, Polished, Bright & Annealed, etc

DIN 17100 St52-3 LSAW Pipe Chemical Composition and Mechanical Property

Grade	C for product thickness in mm	P	S	N	Cr	Mo
St52-3	≤16 16-32 30-40 40-63 63-100 ≥100 ≤0.20 .≤0.20 ≤0.22 ≤0.22 ≤0.22 -	≤0.040	≤0.040	-	-	-

Grade	Yield Strength (for product thickness in mm)	Tensile Strength (for product thickness in mm)
St52-3	≤3 3-100 ≥100 510-680 490-630 -	≤16 16-40 40-63 63-80 80-100 ≥100 355 345 335 325 315 -

ST52.3 Seam Welded Pipe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Processing Methods for ST52.3 Straight Seam Steel Pipes:

1. Forging: Using the repeated impact force of a forging hammer or the pressure of a press to change the shape and size of the blank into the desired shape.

2. Extrusion: This method involves placing metal in a closed extruder, applying pressure at one end to extrude the metal through specified die holes, thus obtaining finished products with the same shape and size. It is mainly used for the production of non-ferrous metal materials.

3. Rolling: This is a pressure processing method in which the steel billet passes through a gap between a pair of rotating rolls, and due to the compression of the rolls, the material's cross-section is reduced while its length increases.

4. Drawing: It is a processing method for metal blanks that have already been rolled, reducing the cross-section and increasing the length by passing them through die holes. This method is mostly used for cold working.

 

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