API 5L X52 seamless pipes are high-strength carbon steel pipes manufactured under the API 5L specification for the transmission of oil, gas, water, and petroleum products. With a minimum yield strength of 52,000 psi (360 MPa), they are widely used in moderate to high-pressure pipeline systems across both onshore and offshore sectors.

Key Features

Suitable for medium to high pressure applications
Available in PSL1 and PSL2 with stricter mechanical and chemical control
Excellent weldability, toughness, and corrosion resistance
Compatible with sour service (NACE MR0175) upon request
Seamless construction ensures high reliability and strength
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Technical Specifications

Standard: API 5L (ISO 3183 equivalent)
Grade: X52 (L360)
Pipe Type: Seamless
Pipe Specification Level: PSL1 & PSL2
Minimum Yield Strength: 52,000 psi (360 MPa)
Minimum Tensile Strength: 66,000 psi (455 MPa)
OD Range: 1/2” to 36” (21.3 mm to 914 mm)
Wall Thickness: SCH 10 to SCH XXS or custom
Length: Single/Double Random, or Fixed up to 12m

Applications

Oil & natural gas transmission pipelines
Offshore and subsea pipeline installations
Refineries and petrochemical plants
Process piping in chemical industries
Structural and mechanical systems requiring higher yield strength

Supply Conditions & Testing

Surface Finish: Black-painted, bare, oiled, or 3LPE coated
Ends: Plain, beveled, or threaded
Heat Treatment: Normalized, Quenched & Tempered, or as required
Hydrostatic Testing
NDT: Ultrasonic (UT), Radiography (RT)
Charpy Impact Testing at -20°C (for PSL2)