Seamless steel tubes for transportation of flammable substances - line pipes

Line pipe - dimensions


0.405 to 4.5 inches (10.3 to 114.30 mm)
sizes 0.405, 0.540, 0.675 supplied as cold drawn


0.068 to 0.531 inches (1.7 to 13.5 mm)

Tubes are delivered according to

API 5L, EN ISO 3183
ASME B 36.10M, ISO 4200

See tube sizes acc. to API, ISO, ASME standards

DIN 2448

See tube sizes acc. to DIN standard

Line pipe - types of steel


L210, L245, L290, L320, L360, L390, L415, L450

L245NE or BNE, L290NE or X42NE,
L360NE or X52NE, L415NE or X60NE
API 5LPSL1A, B, X42, X46, X52, X56, X60, X65
Chemical composition and mechanical properties of steels acc. to DIN and UNI

API tubes

Line pipe - length

EN ISO 3183 and API Spec 5L [m]
nominalminimalaverage maximal
6 - SRL2.745.336.86
12 - DRL4.2710.6713.72
EN ISO 3183 and API Spec 5L [ft]
nominalminimalaverage maximal
20.0 - SRL9.017.522.5
40.0 - DRL
SRL - Single Random Length
DRL - Double Random Length


Ends of tubes

The ends are vertical to the longitudinal
axis and are without burrs.
ends of seamless pipes

The tubes with deburred ends
or ends customized for welding.
ends of seamless pipes customized for welding

Deburring applies to
Tube OD26.7 - 114.3 mm
    Ends of tubes
Tube WT 3.2 - 12.5 mm
Tube lengths4 - 13 meters
Deburring angle, a30°+ 5 and 37°± 2.5
Dimension, c1.6 ± 0.8 mm

Line pipe and bundle marking

Bundles are marked with metal tag with required information

API tubes marking

Tubes packaging

Tubes are bound with steel band into bundles with weight 1 000–3 500 kg.

Tubes testing

Tubes are tested according to requirements of the appropriate standards. In all cases the tube leaking test is performed. Tubes meet the directive requirements NACE MR 0175. covering resistance to acid environment (SSC – Sulfide Stress Cracking). When ordering the tubes it is possible to agree upon the carbon content value (CEV).

Certified test reports for tubes

EN 10204 – 2.2, 3.1


Tubes are visually straight. Max deviation 0.2 % of tube length

Delivery condition and tubes surface

Hot rolled tubes do not go through further thermal processing. Tubes surface corresponds to the way they were produced. Normal annealing (N) may be done after agreement.

Surface protection for oil tubes

The pipes are supplied without temporary anticorrosion protection. While ordering, it is necessary to agree upon the method and means of temporarily protecting the surface of the tubes during transportation and storage.

Seamless steel tubes for transportation of flammable substances-line pipesTubes for transportation of flammable media-gas and oilSteel tubes for transportation of flammable substances-line pipes