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A53 Round Carbon Steel Pipe | Black Steel Tube | Seamless/ERW Pipe Factory | Large Stock & Custom Cut Length
ASTM A53 Grade B Steel Pipe – Engineered, Customized Solutions for the Americas Region
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Q235B SHS Square Hollow Section Steel Tube GB/T 6728-2017 Structural Steel Tube 40×40-400×400mm
Our Q235B square hollow section (SHS) steel tubes are produced in full compliance with China’s national standard GB/T 6728-2017. The product covers a complete size range, with square side dimensions ranging from 40×40mm to 400×400mm and wall thicknesses from 2.5mm to 16mm.
Widely applicable for conventional steel framing, light structural works, factory building construction and various general engineering & building projects, these square steel tubes feature stable performance and strong practicality.
Standard factory lengths are 6 meters and 12 meters to meet regular engineering demands. Custom cutting service is also provided, with customized maximum length up to 21 meters to cater to diverse on-site construction requirements. -
API 5L Grade B Carbon Seamless Pipe Steel Line Pipe for Oil & Gas Pipelines
High-quality, factory-direct API 5L Grade B carbon seamless line pipes for energy, water, and industrial pipeline projects. PSL1 & PSL2 options available.
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API 5L Steel Pipe Supplier | Seamless & Welded Line Pipe Manufacturer
API 5L Steel Pipe Supplier | X42 X52 X70 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 5CT T95 Seamless Carbon Steel Tube Corrosion-resistant Oil Pipes for The Americas
API 5CT T95 Seamless Casing & Tubing – The Expert Solution for Oil & Gas Pipelines in Central America
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ASTM A500 Square Steel Tube 50×50 100×100 150×150 200×200 250x250mm Structural Hollow Section
ASTM A500 Square Steel Tube is a high-quality structural hollow section available in popular sizes 50×50, 100×100, 150×150, 200×200, and 250x250mm. With excellent strength, dimensional accuracy, and weldability, it is widely used in steel structures, warehouses, construction frames, machinery supports, and industrial projects. Customized sizes, wall thicknesses, and surface treatments are available to meet global project requirements.
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API 5CT J55 K55 N80 L80 C90 P110 Oil Well Casing Pipes – High Strength, High Pressure Resistance, Corrosion Resistance
API 5CT oil well casing and tubing grades—including J55, K55, N80, L80, C90, and P110—offer high strength, high-pressure resistance, and corrosion-resistant special steel options
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Q420B SHS Square Hollow Section Steel Tube GB/T 6728-2017 High-Strength Structural Steel Tube 60×60-350×350mm
Q420B square hollow section (SHS) steel tube complies with GB/T 6728‑2017. This grade delivers minimum 420 MPa yield strength alongside 520 MPa tensile strength. Sizes range from 60×60 mm up to 350×350 mm, with wall thickness covering 3.0 mm to 14 mm. Stock lengths are 6 m and 12 m, while custom cut lengths can reach a maximum of 21 m. Well‑suited for heavy‑duty engineering works and high‑load structural steel projects.
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ASTM A53 Gr.B Round Structure Steel Pipe Piles for Oil and Gas Transportation
ASTM A53 Grade B Steel Pipe – Tailored Solution for Americas
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ASTM A53 Carbon Steel Pipe Seamless & ERW Steel Tube for Construction and Industrial Applications
ASTM A53 carbon steel pipe is a widely used steel pipe designed for mechanical, structural, and pressure applications, as well as the transportation of water, gas, steam, oil, and other fluids. Manufactured according to the ASTM A53 standard, it is available in Grade A and Grade B, with seamless and welded (ERW) types, offering excellent strength, durability, and versatility for various industrial applications.
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High-Performance API 5CT T95 Seamless Pipe – For Oil & Gas Wells and Industrial Applications
API 5CT T95 Seamless Casing & Tubing – High-Quality Pipeline Solutions for Central American Oil & Gas Projects
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ASTM A500 Rectangular Steel Tube 50×100 150×100 250x200mm Structural Hollow Section RHS Supplier
ASTM A500 Rectangular Steel Tube (RHS) is a reliable structural hollow section available in popular sizes 50x100mm, 150x100mm, and 250x200mm. It features high strength, excellent weldability, precise dimensions, and strong durability, making it ideal for steel structures, warehouses, construction frames, and industrial applications. Customized sizes, thicknesses, and surface treatments are available to meet global project requirements.
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