DIN 2391 Black Phosphated Precision Steel Tube NBK +N

DIN 2391 Black Phosphated Precision Steel Tube NBK +N - Zhangjiagang Yijiu precision steel tube
DIN 2391 Black Phosphated Precision Steel Tube NBK +N

Cold drawn black phosphated precision tube to DIN 2391 and EN 10305. The phosphate layer improves paint and oil adhesion and gives short term rust protection, which is why it is widely used for painted automotive parts such as shock absorber bodies and steering columns. Bore tolerances stay tight after phosphating.

Price: quoted per specification. Steel prices move with the raw material market, so every quotation is confirmed at the time of order.

Specifications

  • Standard: DIN 2391 / EN 10305-1 / EN 10305-4
  • Steel grade: E215, E235, E355, other grades on agreement
  • Size range: OD 6-50 mm, wall 0.7-5 mm
  • Delivery condition: +N normalized, black phosphated
  • Production method: Cold drawn, heat treated, phosphated

Typical applications

  • Shock absorber bodies
  • Steering columns
  • Painted automotive parts
  • Hydraulic and pneumatic lines

Quality and packing: tubes are protected with anti-rust oil and packed seaworthy, in wooden cases where agreed. Each lot is tested for chemical composition, yield and tensile strength, flattening, elongation and dimensions, with visual inspection and NDT available on request.

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