Produse – Țevi de precizie

SEAMLESS PRECISION STEEL TUBES

1. Standards

  • EN10305-1
  • DIN 2391 (has been replaced with EN 10305-1)

2. Used for

  • In mechanical and automotive industries.

3. Dimensions

Precision steel tubes according DIN 2391 and EN 10305-1 in dimensional range corresponding to the workshop Cold rolling and drawing (Tab.1).

4. Tolerances

Precision steel tubes for honing according Tab.2.

5. Chemical Composition (%)

Steel Group C Si Mn P max S max V
St35, E235 max 0.17 max 0.35 min 0.40 0.025 0.025
St45 max 0.21 max 0.35 min 0.40 0.025 0.025
St52, E355 max 0.22 max 0.55 max 1.60 0.025 0.025
E410, STE460 0.16÷0.22 0.10÷0.50 1.30÷1.70 0.030 0.035 0.08÷0.15

6. Mechanical Properties

Steel Group

delivery

cond.

Tensile Strength Yield Limit Elongation
N/mm² N/mm² %
St35, E235

BK (+C)

BKS(+SR)

NBK (+N)

min 480 min 420

340÷480

min 350 min 235

min 6 min 16 min 25
St45

BK (+C)

BKS(+SR)

NBK (+N)

min 580 min 520

440÷570

min 375 min 255

min 5 min 12 min 21
St52, E355

BK (+C)

BKS(+SR)

NBK (+N)

min 640 min 580

490÷630

min 450 min 355

min 4 min 10 min 22
E410, STE460 BKS +N

min 690

550÷700

min 590 min 410 min 12 min 22

7. Lengths

  • Random lengths: 6÷9m or 8÷11m in length range corresponding to the workshop Cold rolling and drawing (Tab.1);
  • Fixed lengths within the random lengths range;
  • Tolerances: +100/-0 mm.

8. Protection

  • Unprotected;
  • If required, the tubes can be delivered with plastic caps at both ends;
  • Oiled.

9. Marking

  • The tubes will have technical details marked on tags attached to every bundle, according to standard or per customer request.
  • Marking with inkjet on each pipe at  customer request.

10. Delivery

Bundles up to 2000 kg.

Quantity tolerances: ±5% per size or / and per total.

11. Mill test report

  • Mill test reports are issued to customer requirements. Usually they comply with EN 10204, type 3.1.