DIN 2391/EN10305 ST45 ST52 E235 E355 +NBK hydraulic seamless steel pipe

Short Description:

DIN 2391/EN10305 steel pipe is used for cold galvanizing treatment, with dust-proof end covers at both ends. The color of galvanizing is white or yellow, which has good anti-rust and anti-corrosion properties. Widely used in hydraulic system and hydraulic pipeline.

  • FOB Price: US $0.5 - 100 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Delivery : Within 10 days
  • Quality : Support third-party detection
  • Payment: TT/LC
  • Product Detail


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    Brief Introduction

    DIN 2391/EN10305 Seamless Steel Tube with High Precision  is produced base on DIN 2391 and EN10305 standard. It is widely used in hydraulic systems, machine tools, automobiles, ships, construction machinery and vehicles. The Hydraulic galvanized seamless steel tube with high precison has lots of advantages: No corrosion after 120 hours SALT SPRAY TEST;Good performance in Anti Corrosion & Rust;Bright pipe  electro coated with Zinc;Different Color: White/ Yellow/Colorful ;High Pressure /No leakage seamless steel pipe.

    Galvanized steel pipe


     Grade                         ST35/E235  ST37.4  ST45/E255 ST52/E355
     Standard DIN2391  DIN1630  EN10305 DIN2445 JIS G3445  SAE J524                              
     Delivery Conditon              NBK(+N)    BK(+C)    GBK(+A)   BKW(+LC)    BKS(+SR)
    Size OD4 to 120mm Thickness 0.5-20mm, Length: Accroding to request
     Tolerance Outer Diameter:   According to Standard
    Thickness:           According to Standard
     Finish  Galvanized surface (Sliver/Yellow/Colorful)
    Zinc coating of 8-12um
     Application Hydraulic System;Car/bus;construction vehicle
     Delivery time A.7 days if this goods is stock goods.
    B.20 days if this goods will be produced after order

    Delivery Condition

    Designation Symbol Description
    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
    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.

    Certificates:            According to EN 10204 3.1 

    Inspection Items:  

    Tensile stength, Yield stength, Elongation, Flattenging, Flaring;
    Chemical analysis
    Eddy Current Test 100%, Size and surface checking 100%
    Other test item can be arranged by A Third Party as per request.


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