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Precision tubes
Salzgitter Mannesmann Stahlhandel Sp. z o.o. offers round precision tubes with high accuracy of performance and dimensions, as well as outstanding surface class.
Precision tubes are mainly used in the automotive, hydraulic, mechanical and electro-technical industry.
Depending on the type of tubes and the performance technology, our offer includes a wide range of products. Please find below the details.
EN 10305-1 Seamless tubes for precision applications – cold drawn
Seamless precision tubes produced in the process of cold drawing can be delivered with additional heat treatment or without it.
Commonly used grades: E215, E235, E355 and other (see table below)
Scope of produced diameters: from 1,5mm up to 400mm (0,06 – 15,7”).
Delivery conditions:
- +C (BK) Cold drawn / hard (without thermal treatment after last continuity).
- +LC (BKW) Cold drawn / soft (drawn after last heat treatment with small reduction).
- +SR (BKS) Cold drawn and stress relief annealed (tubes annealed under controlled atmosphere after last continuity in order to decrease residual stress).
- +A Annealed (tubes annealed under controlled atmosphere after last continuity).
- +N Normalizing annealing (tubes normalized under controlled protective atmosphere after last continuity).
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EN 10305-1, DIN 2391 Steel tubes for precision applications. Technical delivery conditions. Part 1: Cold drawn seamless tubes. |
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grades: |
wg EN 10305: E215, E235, E255, E355, E410 wg DIN 2391: St30Al, St35, St45, St52 |
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delivery condition: |
+C (BK drawn to gloss/hard) +LC (cold drawn/soft) +SR (cold drawn/stress relieved) +A (annealed) +N (NBK normalized) |
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diameter range: |
1,5 mm – 400mm (0,06 – 15,7’’) |
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wall thickness: |
0,2 mm – 28,5 mm (0,04 – 1,122’’) |
EN 10305-2 Welded tubes for precision applications – cold drawn
Cold drawn welded tubes for precision applications are characterized by high performance accuracy and good surface quality.
Commonly used grades: E155, E235, E355 i inne (tabela poniżej).
Scope of produced diameters: from 20mm up to 120mm (0,78 – 4,724”).
Delivery conditions:
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+C (BK) Cold drawn / hard (without thermal treatment after last continuity).
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+LC (BKW) Cold drawn / soft (drawn after last heat treatment with small reduction).
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+SR (BKS) Cold drawn and stress relieved annealed (tubes annealed under controlled atmosphere after last continuity in order to decrease residual stress).
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+A Annealed (tubes annealed under controlled atmosphere after last continuity).
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+N Normalizing annealing (tubes normalized under controlled protective atmosphere after last continuity).
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EN 10305-2, DIN 2393 Round tubes for precision applications. Technical delivery conditions. Part 2: Cold drawn welded tubes. |
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grades: |
wg EN 10305: E195, E235, E275, E355. wg DIN 2393: St34-2, St37-2, St44-2, St52-3. |
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delivery condition: |
+C (BK drawn to gloss/hard) +LC (cold drawn/soft) +SR (cold drawn/stress relieved) +A (annealed) +N (NBK normalized) |
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diameter range: |
20 mm – 120 mm (0,78 – 4,724’’) |
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wall thickness: |
1,0 mm – 7,5 mm (0,04 – 0,295’’) |
EN 10305-3 Welded size-rolled tubes for precision applications
Welded and sized precision tubes are used environments requiring good formability, resistance and weldability.
Commonly used grades: E155, E190, E235, E355 and other (see table below).
Scope of produced diameters: from 25mm up to 114,3mm (0,985 – 4,5”).
Delivery condition:
- +CR1 welded and sized (normally without heat treatment, suitable for final annealing)
- +CR2 welded and sized (heat treatment after welding and sizing not assumed)
- +A annealed (after welding and sizing tubes are annealed under controlled protective atmosphere)
- +N normalizing annealing (after welding and sizing tubes normalized under controlled protective atmosphere).
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EN 10305-3 , DIN 2394 Steel tubes for precision applications. Technical delivery conditions. Part 3: Welded and sized tubes. |
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grades: |
wg EN 10305: acc. to EN 10305: for delivery condition +CR1/+A/+N: E155, E195, E235, E275, E355. For delivery condition +CR2: E190, E220, E260, E320, E370, E420. acc. to DIN 2393: St34-2, St37-2, St44-2, St52-3. |
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delivery condition: |
+CR1 / BKM +CR2 / BKM +A / GBK (annealed) +N / NBK (normalized) |
| surface condition
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S2 – from hot rolled pickled strip S3 – from cold formed strip S4 – from coated strip acc. to the settled agreements |
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diameter range: |
25 mm – 114,3 mm (0,985 – 4,5’’) |
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wall thickness: |
1,75 mm – 8,5 mm (0,069 – 0,334’’) |
EN 10305-4 Seamless tubes for precision applications – cold drawn, suitable for hydraulic and pneumatic cylinders
Seamless HPL tubes produced in accordance with EN 10305-4 can be characterized by highly accurate performance and are suitable for pipelines found in hydraulic and pneumatic systems.
Commonly used grades: E215, E235, E355 and other (see table below).
Scope of produced diameters: from 4mm up to 80mm (0,985 – 4,5”).
Delivery condition:
- +N normalizing annealing (tubes normalized annealed under controlled protective atmosphere after last continuity).
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EN 10305-4, DIN 2445 Steel tubes for precision applications. Technical delivery conditions. Part 4: Seamless tubes cold drawn, suitable for hydraulic and pneumatic cylinders. |
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grades: |
wg EN 10305: E215, E235, E355 wg DIN 2393: St37-4, St52-4. |
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delivery condition: |
+N / NBK (normalized under controlled atmosphere) |
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diameter range: |
4,0 mm – 80,0 mm |
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wall thickness: |
0,8 mm – 12,50 mm |
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