Seamless steel tubes for transportation of flammable substances - line pipes

Line pipe - dimensions


OUTER DIAMETER (OD)	0.405 to 4.5 inches (10.3 to 114.30 mm) sizes 0.405, 0.540, 0.675 supplied as cold drawn
WALL THICKNESS (WT)	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


EN ISO 3183	PSL1 PSL2	L210, L245, L290, L320, L360, L390, L415, L450 L245NE or BNE, L290NE or X42NE, L360NE or X52NE, L415NE or X60NE

API 5L	PSL1	A, B, X42, X46, X52, X56, X60, X65

Chemical composition and mechanical properties of steels acc. to DIN and UNI

Line pipe - length


EN ISO 3183 and API Spec 5L [m]

nominal	minimal	average	maximal

6 - SRL	2.74	5.33	6.86
9	4.11	8.00	10.29
12 - DRL	4.27	10.67	13.72
15	5.33	13.35	16.76

EN ISO 3183 and API Spec 5L [ft]

nominal	minimal	average	maximal

20.0 - SRL	9.0	17.5	22.5
30.0	13.5	26.2	33.8
40.0 - DRL	14.0	35.0	45.0
50.0	17.5	43.8	55.0

SRL - Single Random Length
DRL - Double Random Length

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Ends of tubes


The ends are vertical to the longitudinal axis and are without burrs.	The tubes with deburred ends or ends customized for welding.

Deburring applies to


Tube OD	26.7 - 114.3 mm

Tube WT	3.2 - 12.5 mm

Tube lengths	4 - 13 meters

Deburring angle, a	30°+ 5 and 37°± 2.5

Dimension, c	1.6 ± 0.8 mm

Line pipe and bundle marking


(a) marked with colored stripes on the tubes (tube bundles),

(b) marked with spray either by a white or black color using InkJet,

(c) marked by stamping the data (this applies to OD > 22 mm and WT >2.3 mm).

Bundles are marked with metal tag with required information

Tubes packaging

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

(a) tubes bound with a steel band

(b) tubes wrapped in plastic sheets, burlap,

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


API 5L EN 10204 – 2.2, 3.1

Straightness

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.

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