DIN 2391 St35 Carbon Steel Pipe

Instruction

DIN 2391 St35 Hydraulic Precision Carbon Steel Pipe for Harvester

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

 

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 Harvester Hydraulic fittings

2: Combine Harvester

3: NPT Compression Hydraulic Fittings

4: for Hydraulic Systems

5: for Car Fuel Oil