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GOST 20295-85 Welded steel pipes for the trunk gas and oil pipelines 3Ñï (Ê34), ñò20 (Ê42), Ê38, low-alloyed (Ê50, Ê52,

Categories ERW Steel Pipe
Brand Name: Best
Model Number: 1/2'' -48''
Certification: API /CE / ISO /TUV
Place of Origin: China
MOQ: 1 TONS
Price: 450 USD/TON
Payment Terms: L/C, T/T
Supply Ability: 100000 Ton/Year
Delivery Time: Shipped in 25 days after payment
Packaging Details: 1) In bundle with strip; 2) First packing by plastic bag then strip; Details packing please see the picture in the detial description.
Standard: PN-EN 10305-2
Grade: Cold drawn steel tubes
Technique: E155 , E195, E235 , E275
Finish: SAWH
Keyword: SAWL (longitudinal welding)
Inspection: With Hydraulic Testing
Surface: Barded /Painting
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GOST 20295-85 Welded steel pipes for the trunk gas and oil pipelines 3Ñï (Ê34), ñò20 (Ê42), Ê38, low-alloyed (Ê50, Ê52,

Production Information :

OFFSHORE - WIND POWER - ENERGY

Steel designation according to EN:
• steel for tubes for mechanical treatment:
steel E355 + AR, E 355 + N
E – steel for machine parts, 355 – minimum yield strength in N/mm2, +AR – heat treatment is not required,
+N – normalising annealed or formed
steel 20MnV6
steel designated by chemical composition – guaranteed mean C content 0,20%, guaranteed content Mn and V
+AR – heat teratment is not required, +N – normalising annealed or formed
• steel for machine parts:
steel without heat treatment after mechanical treatment
non-alloy steel E 235, E275, E315, E355
Condition +AR or +N
steel with specific impact qualities (fine-grain) E275K2, E355K2
K2 – guaranteed characteristic of impact energy 40 J (K) by temperature –20 °C
steel with heat treatment after mechanical treatment
steel C22E
C – steel with carbon content 0,22%, E – reference to maximum checked content of S and P
steel 38Mn6
– guaranteed mean C content and guaranteed Mn content


Steel pipe construction, pipelines and ship building in the North and Baltic Seas present the highest demands on material and weld seams. For these extreme demands of the wind, energy, oil and ship building industries, we stock HF and UP longitudinal welded as well as seamless steel pipe from reputed manufacturers.

Pipe can be delivered from stock according to the following standards and materials:

  • EN 10225: Material S 355 G 13 + N/G 9/G10 + N/G 15 + N
  • API 5 L: Material Grade X 52N PSL2 modified
  • EN 10208-2: Material L 360 NB modified

Welded cold drawn precision steel tubes

Standard EN 10305-2

Dimensions 8 x 1 mm to 200 x 10 mm

Lengths 4 to 7 m

other lengths and fixed lengths on request

Delivery conditions +C (BK)

+N (NBK)

+A (GBK)

+LC (BKW)

+SR (BKS)

Materials Steel grade (EN)

E235

E355

other materials on request

Certification 2.2 acc. to EN 10204

other certifications on request

Welded cold sized precision steel tubes

Standard EN 10305-3

Dimensions 8 x 1 mm to 159 x 4.5 mm

Lengths 6 m

other lengths and fixed lengths on request

Delivery conditions +CR1 (BKM)

+CR2 (BKM/soft)

+N (NBK)

other delivery conditions on request

Materials Steel grade (EN)

E190

E195

E220

E235

other materials on request

Surface treatment cold rolled strip, pickled or unpickled hot rolled strip, aluminized,

sendzimir galvanized, galvanized, hot-dip galvanized,

for chrome-plating, inside welding seam removed

Certification 2.2 acc. to EN 10204

other certifications on request


WELDED STEEL PIPES


We stock and supply longitudinal and spirally welded steel pipes for many different areas of application and segments in standard or commercially available lengths according to your requirements.

Pipes for pressure applications

Welded pipes

  • at room temperature according to EN 10217-1 in materials P 235 TR1 or TR2
  • at high temperatures according to EN 10217-2- and -5 in material P235 GH/TC1
  • according to EN 10217-3 in material P355 N
  • according to API 5L in materials Grade B PSL 1 and Grade BM PSL2
  • according to API 5L in materials Grade X52 PSL 1 and Grade X52M PSL2
  • according to ASTM A53-1995 in material Type E Grade B

Pipes for steel construction

Welded pipes according to EN 10219-1 and 2 in materials S 235 JRH, S 275 JOH, S 355 JOH
and S 355 J2H

Pipes for water transport

Welded pipes according to EN 10224 (DIN 2460)

Pipes for flammable media

Welded pipes according to EN 10208 (DIN 2470)


EGYEDI MÉRETŰ CSŐGYÁRTÁS
Lehetőség van speciális, nem szabvány szerinti méretű csövek gyártására, ennek minimum mennyisége mindig a
gyártandó mérettől függ.
Gyártási lehetőségek préseléses technikával (hosszhegesztett cső): Ø 406,4- 2000 mm átmérőig, hossz: 2000-15100
mm, falvastagság: 8-101 mm
Gyártási lehetőségek hengereléses technológiával (hosszhegesztett cső) Ø 1000-4500 mm, hossz: 1000-3500 mm, falvastagság:
10-130 mm
Egyedi (mag) lyukasztásos technológiával készített honolt és honolásra alkalmas hidraulikus, varratnélküli és hegesztett
csövek 1600 mm átmérőig, 22 méteres hosszig különösen alkalmas energia, olaj és gáz, gépipari, vízgépészeti,
anyagmozgatási célokra.


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.


BK (+C) Cold finished/hard (cold finished as drawn).
No heat treatment after last cold forming process.
BKW (+LC) Cold finished/soft (lightly cold worked).
After last heat treatment there is a light finishing
pass (cold drawing).
BKS (+SR) Cold finished/stress relieve annealed.
After the final cold forming process the tubes are
stress relieve annealed.
GBK (+A) Annealed. After the final cold forming process
the tubes are annealed in a controlled atmosphere.
NBK (+N) Normalized. After the final cold forming process
the tubes are annealed above the upper
transformation point in a controlled atmosphere.


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



Product Tags:

erw steel tube

  

erw mild steel pipe

  
Cheap GOST 20295-85 Welded steel pipes for the trunk gas and oil pipelines 3Ñï (Ê34), ñò20 (Ê42), Ê38, low-alloyed (Ê50, Ê52, for sale
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