White / Yellow Galvanized Seamless Carbon Steel Tubing For Railway Industry

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White / Yellow Galvanized Seamless Carbon Steel Tubing For Railway Industry


  • Size:OD4mm-60mm,TH0.5mm-7mm
  • Standard:DIN2391/C
  • Material: ST35,ST37.4,ST37,ST45,ST52,ST52.4
  • Delivery State:NBK/GBK +white /Yellow/Army green Galvanized
  • Good antirust effect,zinc distributed on the surface
  • No deformation after cold bending,no crack after flaring and flattening.
  • Test:Flattening test,Flaring test,tensile strength test,salt spray test


Synopsis of Process Routing: DIN highly accurate cold drawn bright seamless steel tube is used as the tube to be galvanized, the outer wall is electroplated, caps are covered at two ends of tube to prevent from the dust.

Main Features: Different color of zinc such as white, yellow, army-green, black is evenly distributed in the surface of the tube, good brightness and antirust and antisepsis could improve after zinc coated.


Automotive,military,railway industry,with high requirement of the tube’s  brightness, cleanness,antirust,and antisepsis.

Competitive Advantage:

  1. Certificate we awarded:TS 16949
  2. Our typical customer: Continential Contitech,Benteler.
  3. We have passed BMW’S review.
  4. We have been cooperating with many auto parts manufacture,our tubes are widely used in BMW,Volkswagen,and other brands.
  5. 400 tons precision steel tubes stock capacity,this make our delivery time short and timely.

Production Line:


Production Equipment:


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 Laboratory Testing:


Our Customer:


Certificate Approved:


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RRT Pipe Making Co.,Ltd.
Hengtai Road Industry Area, Daqiuzhuang Town, Jinghai, Tianjin, China (Mainland)
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