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Cold Drawn Erw Mild Steel Tubes , Stainless Steel Erw Pipe St37.4 E255 E235+N

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Cold Drawn Erw Mild Steel Tubes , Stainless Steel Erw Pipe St37.4 E255 E235+N

Country/Region china
City & Province suzhou jiangsu
Categories Metal Casting Machinery

Product Details

Production Information : HIDRAULIKUS ÉS PNEUMATIKUS CSÖVEK, (HIDEGEN VONT VARRATNÉLKÜLI
CSÖVEK)
Kifejezetten gépipari célokra gyártott hidraulikus, pneumatikus rendszerekhez alkalmas nagy méretpontosságú honolt
és honolatlan acélcsövek, a méretek többségénél megfelelő dugattyúrudat is tudunk biztosítani.
Hegesztett és varrat nélküli kivitelben, horganyzott és krómozott felülettel is, zylinder, vezeték, nyomó csövek,
dugattyúrudak.
Méretválaszték: Ø 4-1600 mm, egyedi méretekre gyártási lehetőség
Szabványok: varrat nélküli: EN 10305-4, EN 10205-1/2, DIN 2391
Minőségek: St37.4., E255, E235+N, E355+N, E410, St 52., St52.3., St E460, C10. 16NiCrMo2, 16CrMnS5, C35, C45, C60,
25CrMo4, 30CrMo4, 42CrMo4
Hőkezeltségi állapotok: N (NBK), C (BK), SR (BKS) – LC (BKW), A (GBK)
Felületkezelés: enyhén olajozott korrózió ellen.
Tűrések: H8, H9, H11, szabvány szerint, egyedi beállításra van lehetőség.
Hosszak: 4-13 (22) m, egyedi beállításra, darabolásra van lehetőség.

 

HYDRAULIC AND PNEUMATIC TUBES (COLD DRAWN SEAMLESS TUBES)
Sepecifically for machinery purposes: tubes for hydraulic, pneumatic systems, high precision honed and non-honed
tubes. We can provide you also bars for hydraulic pistons for majority of the tubes.
We can procide you chromed bars, galvanised and galvan free tubes, cylinder tubes, hydraulic line pipes.
Size assortment: Ø 4-1600 mm, possibility to produce customised sizes..
Standards: seamless: EN 10305-4, EN 10205 1/2, DIN 2391, welded: DIN 2394
Qualities: St37.4., E255, E235+N, E355+N, E410, St 52., St52.3., St E460, C10. 16NiCrMo2, 16CrMnS5, C35, C45, C60,
25CrMo4, 30CrMo4, 42CrMo4
Heat treatment: N (NBK), C (BK), SR (BKS) – LC (BKW), A (GBK)
Surface treatment: slightly oiled against corrosion.
Tolerances: H8, H9, H11 acc. To standard, possibility to make customised parameters.
Lenghts: 4-13 (22) m, possibility to make customised lengths.
 

 

The advantage of steel tubes for precision applications is the high precision of their manufacturing, the good quality of their surface, and the guaranteed mechanical and technological properties. That is why the pipes are widely used in the machining industry and in the automotive industry. Welded pipes for precision applications are manufactured in the process of cold drawing.

 

 

PN-EN10305-2 Delivery condition

 

 

DesignationSymbolDescription
Cold drawn / hard+CWithout thermal processing, after the process of cold drawing is finished
Cold drawn / soft+LCAfter final thermal processing, appropriate drawing
Cold drawn and annealed+SRAfter the final cold drawing process and annealing thermal processing in a controlled atmosphere
Annealed+AAfter the final cold drawing process, the pipes are annealed in a controlled atmosphere
Normalized+NAfter the final cold drawing process, the pipes are normalized in a controlled atmosphere

 

 

Mechanical properties in room temperature

 

 

Steel gradeMaximum values depending on the delivery condition
+C+LC+SR+A+N
Steel symbolRmMPaA %RmMPaA %RmMPaReHMpaA %RmMPaA %Rm MPaReHMpaA %
E1554006350103502451826028270 do 41015528
E1954206370103702601829028300 do 44019528
E2354906440104403251431525340 do 48023525
E275560551085103751239021510 do 55027521
E355640459065904351045022490 do 63035522

 

 

Chemical composition (ladle analysis)

 

Steel grade% of the mass
Steel symbolC maxSi maxMn maxP maxS max
E1550,110,350,700,0250,025
E1950,150,350,700,0250,025
E2350,170,351,200,0250,025
E2750,210,351,400,0250,025
E3550,220,351,600,0250,025

 

 

Inspection and test list

 

Inspection or test typeTest frequency
Internal testsAcceptance test
MandatoryChemical analysisMM
Tensile testingMOne per tested batch
Dimension verificationMM
Visual inspectionMM
OptionalFlattening test or expansion test (option 18)MOne per tested batch
Roughness testingNot applicableOne per tested batch
NDT of the weld in order to identify any longitudinal discontinuitiesNot applicableIndividual
NDT in order to detect any leaks

 

 

PN-EN 10305-2 Cold drawn steel tubes for precision applications  Pictures 

 

 

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