SAW Longitudinal

Longitudinal Submerged Arc Welded (LSAW) steel pipes are a type of welded steel pipe that are produced using the double-sided submerged arc welding method. These pipes are primarily used for the transportation of fluids and gases, especially in applications that require high-pressure resistance and low-temperature resistance.

Features

Large diameter
Thick walls
High-pressure resistance
Low-temperature resistance
Good toughness
Ductility
Uniformity
Compactness

Application Areas

Oil and gas industry
Central heating systems
Water supply
Sewage treatment
Engineering components

Natural gas pipe line
Oil pipe lines
Onshore structures
Construction Base
Steel Struction Base
Jeothermal Pipe lines etc.

Standards

Product Range

Outside Diameter: 508-1067 mm (20”-42”)
Thickness:6,4-25,4 mm
Lenght: 8-38 m

Steel Grades

API 5L PSL 1: Gr A, Gr B, X 42, X 46, X 52, X 56, X 60, X 65, X 70
API 5L PSL 2: Gr B, X42 , X46 , X52 , X56 , X60 , X65 , X70 , X80
ASTM A 53: Gr A, Gr B
ASTM A252: GRADE1, GRADE2, GRADE3
TS EN 10217-1(EN 10217-1): P 195 TR1, P 235 TR1, P 265 TR1, P 195 TR2, P 235 TR2, P 265 TR2
EN 10224: L 235, L 275, L 360
EN 10208 – 1/2: L 245NB, L 290NB, L 360NB
EN 10219 – 1/2: S 235, S 275, S 355

Manufacturing Standarts

EN-10217
EN 10224
DIN 1626
AWWA C-200
NFA 49150
DIN 2460
UNI 6363
GOST 20295
EN 10208-2
ISO 3183
TS EN 10217-1
AWWA C200
BS 534
UNI 6363
TS EN 10224
BS 3601
TS EN 10219
AWWA C208
BS 534

Surface Preparation

ISO 8501-1, ISO 8502-3, ISO 8503-1

Coating

Polyethylene : AWWA C 215, DIN 30670, NFA 49710, TS EN 10288, UNI 9099

Polypropylene : DIN 30678, NFA 49711

Solvent Free Epoxy : AWWA C 210, EN 10289, NFA 49709

Fusion-bonded Epoxy : AWWA C 213

Bitumen: DIN 30673, BS 534

Lining Standards

Epoxy : AWWA C 210, EN 10289, NFA 49709

Cement Mortar : AWWA C 205, DIN 2614, TS 8590, EN 10298

Fusion-bonded Epoxy : AWWA C 213

Tests

Non Destructive Tests

AUT Coil Lamination with 100% Coverage
AUT Online Weld Inspection
First Visual Inspection Manual
Ultrasonic Inspection
Hydrotest
AUT Online Weld HAZ and Pipe End
Lamination Inspection
Digital X-Ray Weld Inspection
Pipe End Magnetic Examination
Magnetic Particle Inspection Final Visual and Dimensional Inspection

Destructive Tests

Tensile Test Bending Test
Charpy V Notch Impact Test
Hardness Test
Macro and Micro Metallographic Examination
DWTT – Drop Weight Tear Test
Chemical Analysis Crack Tip Opening Displacement (CTOD) Test

Test Certificates

ISO 9712
ISO 11484
MTC according to EN10204/3.1

SAW Longitudinal.