LARGE WELDED ERW API LINE PIPE

WELDED LARGE DIAMETER PIPE

LONGITUDINALLY WELDED LARGE DIAMETER PIPES

Welded large diameter pipe (LDP) used for the construction of oil and gas trunk pipelines, oil field pipelines, general purpose pipelines, and pipelines for heat supply networks and nuclear power stations.

Line Pipes (API-5L)

Line pipes are used to transport oil and gas, water, mineral slurry and other fluids. Our line pipes are manufactured in accordance with API Spec 5L. We supply various ERW line pipes (OD from 4-1/2" to 24", steel grade A, B, X42 - X70).

Diameters

• 4-1/2 ~ 24 in (114.3 - 610 mm)

Wall Thickness

• 0.156~ 0.625 in (2.8 - 15.88mm)

Lengths

• 40, 60 and 80 ft (12, 18, and 24 m) nominal

Grades

• API 5LB through X70

• ISO 3183 grades L245 - L485

• CSA Z245.1 Grades 241-483

NDT standards

• EN 10208-2: Annex C

• API 5L: Annex E, Annex K

Heat Treatment

• For whole product range weld seam annealed.

Finishing Operations

• Plain-End, Square Cut or bevelled.

Surface Condition

• Black self-colored / uncoated

• Mill protective coating (varnish) on outside surface

• Three Layer Extruded Polyethylene – Polypropylene coating (plus rough coating)

• Fusion Bond Epoxy Single – Dual Layer coating

• Liquid Epoxy coating

Mill Test Certificates

• Certification according to EN 10204 2.1; 2.2; 3.1; 3.2

Quality Certificates

• Quality Assurance System Certificate:

• ISO 9001, API Specification Q1, DIN EN ISO 3834-2, EN ISO 3183, EN 10219-1

• Production Approval Certificates:

• Laboratory Accreditation Certificate:

Test Performed

• Hydrostatic Test

• Visual and Dimensional Inspection

• Laboratory Tests:

• Chemical Analysis

• Tensile test

• Charpy V-Notch impact test

• Guided Bend test

• Drop Weight Tear (DWT) test

• Metallographic Examination

• Hardness test

• Reverse Bend test

• Flattening test

• Hydrogen Induced Cracking (HIC) test

• Sulfide Stress Corrosion Cracking (SSCC) test

• Strain and Ageing Tests

• Non Destructive Inspection: Ultrasonic inspection (pipe body & weld), Magnetic Particle inspection (weld)