Produse – Țevi pentru transportul apei sau gazelor

GAS AND WATER SEAMLESS, PLAIN ENDS, BLACK TUBES

1. Standards

  • DIN 2440 (has been replaced with EN 10255);
  • DIN 2441 (has been replaced with EN 10255);
  • UNI 8863 (has been replaced with EN 10255);
  • EN 10255;
  • ASTM A53.

2. Used for

  • Construction of long distance Pipe Lines for combustible liquids and gases;
  • Conveying gas and oil; in oil and natural gas industries.

3. Dimensions

According EN 10255 or ASME B36.10M in dimensional range corresponding to the workshop CPE (Tab.1) or ASSEL (Tab.2).

4. Tolerances

Standard Outside Diameter Wall Thickness Weight
DIN 2440 Acc. Tab.4 -12.5% +/-10% for single lengths +/-7.5% for carload lots
DIN 2441 Acc. Tab.5 -12.5% +/-10% for single lengths +/-7.5% for carload lots
EN 10255 Acc Tab.3,Tab.4, Tab.5 +/-12.5% +/-7.5%
ASTM A 53 ±1% -12.50% ±10% of the pipe

5. Chemical Composition (%)

Steel Grade Mass fraction, based upon heat and product analyses, [%] max.
Si Mn P S V Nb Ti Cu Ni Cr Mo
Grade A 0.25 0.95 0.05 0.045 0.08 Cu+Ni+Cr+Mo+V≤1% 0.40 0.40 0.40 0.15
Grade B 0.30 1.20 0.05 0.045 0.08 Cu+Ni+Cr+Mo+V≤1% 0.40 0.40 0.40 0.15
Fe 330 0.17 0.65 0.040 0.040
S195T 0.20 1.40 0.035 0.030

6. Mechanical Properties

Steel Grade Yield strength

 Rt0,5, PSI  (MPa)

Tensile strength

 Rm, PSI (MPa)

Elongation [%]
minimum maximum minimum maximum  
Grade A 30000(205) 35000(240) 48000(330) 60000(415)
Grade B 30000(205) 35000(240) 48000(330) 60000(415)
Fe 330 3062(210) 4811(330) 7582(520) Min 22%
S195T 2843(195) 4666(320) 7582(520) Min 20%

7. Lengths

Random lengths or fixed lengths in length range corresponding to the -workshop CPE (Tab.1) or ASSEL (Tab.2).

8. Protection

  • Unprotected;
  • External varnished with black or clear lacquer;

9. Marking

  • According to standard or per customer request.

10. Delivery

In bundles up to 4000 kg (8800 lbs) tied in minimum six places with steel strip.

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 DIN 50049, EN 10204.

12. Quality certified

  • TUV- PED, AD; CE; DNV.