Petroleum transmission welded stainless tubing

Transporting crude oil, natural gas, and refined products over long distances demands piping systems that deliver absolute reliability under extreme conditions. Our comprehensive range includes Oil and gas sector welded stainless steel tube engineered for high-pressure, corrosive environments where failure is not an option. We also manufacture Stainless welded tubing for petroleum industry that meets stringent API, ASTM, and NACE standards, ensuring seamless integration into upstream exploration, midstream transmission, and downstream refining. For operators seeking robust Pipeline pipe for oil and gas transmission, our longitudinally welded products offer superior burst strength and fatigue resistance. Every length of Petroleum grade stainless welded conduit is subjected to rigorous eddy current testing and hydrostatic trials, delivering leak-free performance in sour service and buried cross-country applications.

Petroleum transmission welded stainless tubing is designed with a consistent wall thickness and smooth internal bead to minimize flow turbulence, which directly reduces pumping costs over the lifecycle of the pipeline. The austenitic and duplex stainless steel grades employed resist chloride stress corrosion cracking, sulfide stress cracking, and hydrogen-induced cracking – the most common failure mechanisms in petroleum environments. Each tube undergoes solution annealing after welding to restore full corrosion resistance in the heat-affected zone, followed by pickling and passivation for a clean, oxide-free surface that supports immediate field welding and coating. With diameters from ½ inch to 48 inches and schedule capabilities from SCH 5S to SCH 160, this tubing adapts to manifold headers, gathering lines, and long-haul trunk pipelines. The material traceability system retains full mill certifications from the original heat lot through to final packaging, enabling compliance audits and long-term asset integrity management.

• Material Grades: TP304/304L, TP316/316L, TP321/321H, 2205 Duplex, 2507 Super Duplex, 904L
• Manufacturing Standard: ASTM A358, ASTM A312, ASME SA358, API 5LC, NACE MR0175
• Size Range: NPS ½” to 48” (DN15 – DN1200)
• Wall Thickness: SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, and custom heavy-wall
• Lengths: Random double random lengths up to 24 meters, cut-to-length options available
• Weld Technique: GTAW, GMAW, PAW with full penetration and reinforcement control
• Testing: 100% hydrostatic test, pneumatic leak test, eddy current or ultrasonic inspection (UT)
• End Finishes: Plain end, beveled end (30° ±5°), square cut, threaded and coupled on request
• Surface Condition: Pickled and passivated, bright annealed, or shot blasted for coating readiness
• Certifications: EN 10204 3.1 / 3.2, ISO 9001, PED 2014/68/EU, full MTR traceability