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API 5L Seamless Steel Pipe (X52, X60, X65, X70, X80) | SMLS Line Pipe for Oil & Gas Pipeline
API 5L Steel Pipes (Grade B/X42-X80) – The Expertise Solution for Oil & Gas Pipelines in Central America
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API 5L Grade B Seamless Steel Pipe (PSL1, PSL2)
API 5L Steel Pipes (Grade B/X42-X80) – The Expertise Solution for Oil & Gas Pipelines in Central America
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API 5CT OCTG Tubing & Casing – OCTG Pipe Manufacturer China
Mill-direct OCTG tubing supplier in China, exporting API 5CT casing, tubing and couplings for oil and gas drilling programs. Full traceability from heat number to final thread: J55–P110 grades, standard and premium connections, third-party inspection, export-ready packing. Send your size and grade list — we come back with pricing and lead time within one working day.
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API 5L X52 / X60 / X65 / X70 / X80 Seamless Line Pipe | SMLS Pipeline Steel Tube Supplier
High-Performance API 5L Steel Pipes (X42–X80) – Engineering Excellence for Southeast Asia and Central America’s Oil & Gas Infrastructure
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Custom Manufacturer API 5L 5CT Round Black Seamless & Welded Structure Steel Pipe for Oil and Gas Transportation
API 5L pipe is a carbon steel pipe used for oil and gas transportation. It includes seamless pipe(SMLS) and welded pipe (ERW, SSAW,LSAW).
It has a wide range of commercial applications:
Foundation Engineering: load-bearing piles, driven piles, threaded micropile casings, and geostructure solutions;
Construction and Protection: composite walls, structural sections, bridge abutments and dams, storm protection, and underground garages;
Energy and Infrastructure: solar solutions, signposts, towers and transmission lines, and horizontal pipelines;
Resource Development: mining-related applications. -
ASTM A252 Grade 1/2/3 LSAW Steel Pipe | OD 508-1422mm Large Diameter Foundation Steel Pipe
LSAW steel pipes, conforming to ASTM A252 standards, are high-strength, large-diameter steel pipe piles suitable for foundation engineering, bridge construction, marine engineering, and heavy infrastructure projects. LSAW steel pipes offer excellent structural shape, good weldability, and load-bearing capacity, making them suitable for deep foundation applications. Outer diameters range from 508 to 1422 mm. These ASTM-compliant LSAW steel pipes are designed according to current industry specifications and standards, ensuring high strength, uniform wall thickness, and superior durability even in harsh soil and saltwater environments.
These LSAW steel pipes are suitable for bridge pile foundations, port terminals, offshore platforms, high-rise building foundations, and industrial infrastructure. Collaboration with numerous experienced EPC contractors and global building solutions ensures their long service life, high corrosion resistance (with optional coatings), and ease of installation.
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Wholesale ASTM A53 Hot Dip GI Galvanized Steel Pipe
ASTM A53 GI Galvanized Steel Pipe manufactured for North American construction, infrastructure, and industrial projects. Hot-dip galvanized for enhanced corrosion resistance, available in custom sizes and specifications with competitive factory pricing and worldwide shipping.
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Large Diameter SSAW Spiral Welded Steel Pipe Manufacturer | Royal Steel Group
Royal Steel Group supplies large-diameter SSAW (spiral submerged arc welded) steel pipes for structural, foundation, water supply, oil and gas, and infrastructure projects.
The pipe is made from high-quality carbon steel strip, formed into a spiral and welded with the submerged arc process. It’s a proven method that produces a clean, strong weld — even at large diameters. Every production step follows strict quality control standards.
The result is dependable strength, solid weld quality, and a real cost advantage — which is why SSAW pipes hold up well in high-pressure service and demanding construction projects.
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API 5L Grade B X42 X52 X65 Carbon Steel Line Pipe Seamless and Welded Steel Pipe
API 5L Steel Pipe Supplier | X42 X52 X65 Seamless & Welded Line Pipe
Looking for a trusted API 5L steel pipe supplier for oil & gas or pipeline projects?
Royal Steel Group supplies seamless steel pipe, ERW pipe, LSAW pipe, and SSAW pipe, meeting PSL1 / PSL2 standards for high-pressure applications.
✔ Full Grades: X42 – X80
✔ Large Stock & Fast Delivery
✔ Third-party Inspection Available
✔ Global Export Experience -
API 5L Standard Line Pipe (API Line Pipe) – API 5L Seamless Pipe (API Seamless Pipe) of API 5L Material Grades: API 5L Gr B (API 5L B), API 5L Gr B PSL2, API 5L X42, API 5L X60 (X60 Pipe), API 5L X65 (API 5L X65 Pipe), API 5L X70 (X70 Pipe), API 5L X80, with PSL2 Pipe & API Sch 40 Pipe...
API 5L Line Pipes are Superior Grade Carbon Steel Pipe used for Oil and Gas line Pipe which have the property of transporting oil and gas. Manufactured to the stringent specifications of API 5L, these tubes have high tensile, impact and corrosion resistance.
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Wholesale ASTM A53 GI Galvanized Steel Pipe | Hot Dip Steel Pipe Manufacturer
ASTM A53 GI Galvanized Steel Pipe is a practical choice for construction, infrastructure, and industrial projects. Its hot-dip galvanized coating provides added protection against corrosion, making it suitable for many indoor and outdoor applications. Different sizes, wall thicknesses, and specifications can be supplied to match project requirements, with factory pricing and export shipping available.
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SSAW Spiral Welded Steel Pipe Manufacturer | Large Diameter Steel Pipe Supplier
We make large-diameter SSAW (spiral submerged arc welded) pipes for projects that don’t get to fail: structural frames, foundations, water supply lines, oil and gas, and general infrastructure.
The steel starts as high-quality carbon strip, spiraled into a tube and welded by the submerged arc process. The weld seam comes out clean and deep, which matters most at big diameters, where a weak joint is the first thing to crack under pressure.
Quality control runs through every step, from strip to finished pipe. The pipe is strong enough for high-pressure service. The welds hold up in tough site conditions. And the cost makes sense at scale. That’s why SSAW keeps showing up on demanding construction projects.
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