ST37.4 ST44.4 ST52.4 Priceison Steel Tube for dynamic Loads Normal Pressures 100 to 400 bar

Short Description:

ST37.4 ST44.4 ST52.4 Seamless Steel Tube for dynamic Loads Normal Pressures 100 to 400 bar accoding to DIN 2445 or DIN1630 standard. Its features are high precsion, smooth surface, strong anti rust and anti corrosion property. After 220 hours' Salt Spray Test, there is no any corrosion.

  • 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


    Product Tags

    Brief Introduction

    ST37.4 ST44.4  ST52.4 Steel Grade Seamless Steel Tube for dynamic Loads Normal Pressures 100 to 400 bar is our company mainly product. It is widly used in heavy duty truck, military industry, railway locomotive,engine filed and the gas line in special vehicle.They could meet the requiremnts because of high precison of Out diameter and Inner diameter. Also its anti corrosion performance.

    Technical Characteristics

        Standard:                     DIN 1630 DIN2445 
        OD:                               4-90mm
        Thickness:                    0.5-20mm
        Grade:                         ST37.4 ST44.4  ST52.4
        Heat Treament:            NBK(+N) normalized, BK, GBK,
        Surface Treament:       Army green passivated, Sliver Galvanized, Black Phosphated,Black paint,
        Straightness:               1mm/1000mm
        Dimension Telorance:  According to DIN1630 DIN2445 Standard


        High precison, smooth surface
        Strong anti rust/corrosion property
        No any corrosion after 220 hours’ Sale Spray Test

    Delivery Conditions 

      The tubes can be produced in the following delivery conditions: 
      BK (+C) Cold finished/hard (cold finished as drawn).
      No heat treatment after the last cold forming process. 
      BKW (+LC) Cold finished/soft (lightly cold worked)
      After the 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. (Mainly focus on)
      After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere

    Chassis pipeline




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