EN 10305-1 Seamless Precision Steel Tube

EN 10305-1 is the European standard for seamless cold drawn steel tubes used in precision applications. We supply the tube in the grade and delivery condition your drawing requires, with outside diameter, wall and inside diameter confirmed before production.

EN 10305-1 seamless cold drawn precision steel tube
EN 10305-1 seamless cold drawn precision tube

Grades

  • E215: general precision machined parts
  • E235: the most common grade, hydraulic and mechanical parts
  • E355: higher strength parts

Delivery conditions

  • +C: cold drawn hard
  • +LC: cold drawn soft
  • +SR: stress relieved
  • +A: annealed
  • +N: normalized

Typical specifications

  • Outside diameter 4-80 mm, wall 0.6-10 mm
  • Tolerance class per EN 10305-1, agreed from the drawing
  • Heat number and mill certificate with every lot
  • Straightness checked after the agreed straightening step

Applications

  • Hydraulic cylinder barrels
  • Shock absorber bodies
  • Steering shafts and columns
  • Precision machined tubular parts

Frequently asked questions

Is EN 10305-1 the same as DIN 2391?

EN 10305-1 is the current European replacement for DIN 2391. Grades and delivery conditions map closely, but the standard written on your drawing is the one that controls the order.

Can you supply cut lengths?

Yes. Random lengths or cut to your drawing, with ends deburred and chamfered as agreed.

Request a quotation: send your size list or drawing through our contact page. We reply within one working day with price, tolerance and lead time.