What steel grades, PSL levels, and dimensions are available for API 5L line pipes?

Sino East manufactures API Spec 5L (46th Edition) line pipes in Grade B, X42, X46, X52, X56, X60, X65, and X70 in both PSL 1 and PSL 2 specifications. SMLS seamless pipes range from 1/2 inch to 24 inches OD (SCH 20 to SCH XXS), ERW pipes from 1/2 inch to 24 inches, and LSAW/SSAW heavy-wall pipes from 16 inches to 120 inches OD for major transmission pipelines.

How do you guarantee sour-service (H2S) performance per NACE MR0175 / ISO 15156?

For offshore gathering and sour hydrocarbon transmission, our PSL 2 sour-service pipes feature vacuum-degassed steel with ultra-low sulfur (S <= 0.002%), restricted CEV (<= 0.42), and maximum hardness of 22 HRC (248 HV10). Batch testing includes HIC (NACE TM0284 CLR <= 15%) and SSCC (NACE TM0177 Method A with no failure at 80% SMYS), fully documented on EN 10204 3.1 MTCs.

What factory anti-corrosion coatings and internal flow linings do you offer for line pipes?

We supply factory-applied 3-Layer Polyethylene (3LPE per DIN 30670 / ISO 21809-1), 3-Layer Polypropylene (3LPP for high temperature up to 110 deg C), Fusion Bonded Epoxy (Single & Dual Layer FBE), and internal liquid epoxy flow efficiency lining (API RP 5L2 / AWWA C210) to reduce friction and prevent internal deposit buildup.

What non-destructive and destructive testing is conducted on API 5L pipes?

Each pipe undergoes 100% in-line hydrostatic pressure testing (up to 50 MPa / 7,250 psi held for >= 10s), 100% automated full-body Ultrasonic Testing (UT), and weld seam Radiographic / UT inspection. Mechanical lab verification includes Charpy V-Notch impact testing (at 0 deg C and -20 deg C), tensile strength, yield-to-tensile ratio (<= 0.93 for PSL2), and flattening/guided bend tests.

API 5L Line Pipe

Name: API 5L Line Pipe — Sino East Steel
Brand: Sino East Steel
SKU: SES-F7682734
Availability: InStock

API 5L line pipe for oil, gas and water transmission — seamless and welded, PSL1/PSL2, X42-X70, with full MTC traceability and project-scale supply to GCC pipelines.

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