WELDED TYPE API 5L GRADE B STEEL LINE PIPES

Heavy-duty welded carbon steel line pipe manufactured to API Specification 5L (Grade B) for oil, gas and petrochemical pipeline systems. Designed for long-distance onshore transportation and distribution of petroleum, natural gas and other liquids, these pipes are engineered for reliable service in a wide range of operating conditions including low and high temperatures, corrosive environments and sour-service (H2S) applications.

Key features

• Standard: API SPEC 5L — Grade B
• Product type: Welded line pipe (ERW / LSAW / other welded constructions available)
• Size range (typical availability): ERW: 1/2" NB – 24" NB; LSAW: 16" NB – 100" NB (seamless sizes also produced separately)
• Wall thickness / schedules: SCH10, SCH20, SCH40, SCH80, SCH160, SCHXXS
• Lengths: 3 m to 18 m (custom lengths on request)
• Ends: Plain (plain-end), beveled or to customer specification
• Surface finishes: bare, black painted, galvanized, oiled or custom coating

Mechanical & quality control

• Chemical composition analysis and mechanical properties testing (tensile, yield, elongation)
• Technical tests: flattening, bending, hardness, impact, blow test
• NDT and pressure testing: exterior dimensional inspection, hydrostatic test (up to 20.7 MPa / 3000 psi where required), X‑ray (RT) available
• Packing and shipping: plastic plugs in both ends; bundled (typ. hexagonal bundles ~2,000 kg) with steel straps; wrapped with waterproof paper, PVC sleeve or sackcloth; tags on bundles; export-ready packaging
• Quality management: ISO 9001:2008 certified (as supplied)

Typical applications

• Onshore oil and gas transmission pipelines
• Petroleum and natural gas distribution networks
• Pipeline projects requiring sour-service or corrosive-environment resistance
• Industrial fluid transport where API 5L Grade B performance is specified

Ordering information

Provide the following when requesting a quote: required diameter and wall schedule, length per piece, end preparation, surface finish/coating, required tests/certificates and destination/packing requirements. Request an RFQ through this marketplace listing to receive lead times, pricing and available certification documents.