DIN2391 ST52 Seamless Carbon Steel Pipe For Excavator Hydraulic Pump System

Torich is a manufacturer of precision carbon steel tube for over 20 years.have lots of experiences on manufacturing and exporting steel pipes.

Standard as per DIN 2391 standard specifies the Seamless steel tubes used forMechanical and Automobile.

Similar standard and material as below.

JIS G3445 STKM 11A C STKM11A C C STKM 12A B C STKM14 A B C STKM 13 A B C STKM 15A B C

STKM 16A C STKM 18 A C STKM 19A STKM20A

ASTM A512 A513 A519 A312

BS 1717 6323 ERW C1 ERWC2 HFS3 CEWC2 CFSC3 CFS3 CFS3A ERWC3 CFSC4 CFS4 HFS4 HFS5

DIN 2391DIN 2393DIN 2394

NF 49-322 NF49-327 NF49-324 NF49-330 NF49-343

ISO 3304 ISO3305 ISO3306 ISO3304 ISO3305 ISO3306 ISO2937

Size: OD 0.5-15mm, WT4.0-80 mm

Tolerance: Outer Diameter: +/- 0.05mm

Thickness: +/- 0.05mm OR as Customer Request

Length max 12000mm

Cutting Length available.

Max length 5.8 for 20ft container

Max length 11.8m for 40ft container

Technical Standard:

DIN2391, DIN2394

EN10305-1, EN10305-2, EN10305-4

Steel Grade: St35, ST37, ST37.4, ST45, ST52

Chemical Composition

Mechanical Properties.

Delivery Condition

Cold finished (hard) BK(+C) Tubes do not undergo heat treatment following the final cold forming and, thus, have a

rather high resistance to deformation

Cold finished (Soft) BKW (+LC) The final heat treatment is followed by cold drawing involving limited deformation.

Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding)

Cold finished and stress-relieved BKS(+SR) Heat treatment is applied following the last cold forming process.

Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming

and machining to a certain degree.

Annealed GBK(+A) The last Cold forming process is followed by annealing in a controlled atmosphere.

Normalized NBK(+N) The last cold forming process is followed by annealing above the upper transformation point

in a controlled atmosphere.

Surface:

1) NBK (Bright Annealed)

2) Galvanization/Galvanized/Zinc Coated

3) Blue White Zinc (Trivalent Chromium Passivation)

4) Plating Colour Zinc(Trivalent Chromium Passivation)

5) Yellow, Army-Green

6) Phosphated/Black Phosphated

7) Smooth outer and inner surface

Applications

1: for Car Fuel Oil

2: for Automotive Fuel Oil

3: for Injection Molding Machine

3: for Screw Air Compressor

4: For Excavator Hydraulic Pump System

5: for Air pneumatic Brake System