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HSS Structural Steel Tube (Square & Rectangular Hollow Section)
High-Strength ASTM A500 HSS Steel Tube for Structural Applications
At Royal Steel Group, we deliver premium-grade HSS structural steel tubes engineered in full compliance with ASTM A500 Grade B and Grade C specifications. ASTM A500 HSS Steel Tubes are widely trusted for diverse heavy-duty and commercial construction projects, including commercial building frameworks, industrial plant facilities, data center structures, bridge works, and various core structural applications.
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ASTM A53 Steel Square Tube – Industrial, Mechanical & Construction Applications
We manufacture ERW welded and seamless square steel tubing conforming to ASTM A53 standards using superior craftsmanship. These tubings are made from robust and durable carbon steel to meet your structural, mechanical, or industrial needs. We offer custom sizes and three finishes: galvanized, black, or red (black tubing with a red coating on the inner wall) to enhance corrosion resistance and durability.
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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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EN 10219 S235JRH / S275JRH / S355JRH Structural Steel SHS Square Hollow Sections Supplier
EN 10219 S235JRH, S275JRH and S355JRH Structural Steel SHS Square Hollow Sections are cold-formed welded steel tubes designed for use in construction and steel structures such as warehouses, industrial buildings, and infrastructure applications. These square hollow section are manufactured as per EN 10219 which are strong, dimensionally accurate, weldable and corrosion resistant. Available in a variety of sizes and wall thickness, and different surface treatments such as black, oil, painted and hot dip galvanized. Royal Steel Group provides premium SHS steel tubes at the best value, tailored fabrication and global export assistance.
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Industrial-Grade ASTM A671 CC65 CL 12 EFW Pipes/Tubes for Boilers, Refineries & Infrastructure
ASTM A671 CC65 CL 12 EFW Carbon Steel Pipes – High-Strength Welded Steel Tubes for Industrial, Structural & Pressure Applications – Custom Sizes & OD/Wall Thickness Available
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ASTM A106 / ASME SA106 Seamless Steel Pipe Manufacturer & Exporter
ASTM A106 and ASME SA106 seamless carbon steel pipes stand out for stable performance under high temperature and high pressure environments, with three standard grades A, B and C for selection. They serve as core piping materials for oil & gas transportation, power generation boilers and various industrial piping projects.
At Royal Steel Group, every pipe undergoes strict quality verification. We supply complete MTC material test certificates and deliver seamless export solutions to customers across the globe.
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High Strength ASTM A500 Q355B Steel Square Hollow Section Tube for Steel Structure Building Projects | China Manufacturer
High-strength ASTM A500 and Q355B steel square hollow tubes from a leading Chinese manufacturer. Perfect for steel structure buildings and infrastructure projects. Contact us for material inspection reports and factory-direct pricing.
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API 5L GR.B X42 X46 X52 X60 X65 X70 X80 Seamless Steel Pipe
API 5L Steel Pipes (Grade B/X42-X80) – The Expertise Solution for Oil & Gas Pipelines in Central America
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API 5CT N80 Oil Casing Steel Pipe for Malaysian Oil & Gas and Foundation Projects
Common Size:
4.5″ × 0.28″ (~114.3 mm × 7.1 mm)
5″ × 0.33″ (~127 mm × 8.4 mm)
7″ × 0.50″ (~177.8 mm × 12.7 mm)
9 5/8″ × 0.53″ (~244.5 mm × 13.5 mm)
13 3/8″ × 0.62″ (~340 mm × 15.7 mm)
20″ × 1.0″ (~508 mm × 25.4 mm) -
API 5L Grade B X42 Seamless Steel Pipe (PSL1, PSL2)
API 5L Grade B & X42 seamless line pipe in PSL1 and PSL2 quality levels. Manufactured with seamless hot rolling process for consistent wall thickness, no weld defects, and reliable toughness under high-pressure operating conditions. PSL2 grade suitable for sour service and low-temperature environments. Full inspection documentation available, manufactured in accordance with international pipeline specifications.
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API 5L Line Pipe Manufacturer | Seamless Steel Pipe Supplier for Oil & Gas Projects
High-Performance API 5L Steel Pipes (X42–X80) – Engineering Excellence for Southeast Asia and Central America’s Oil & Gas Infrastructure
Royal Steel Group is a leading supplier of API 5L line pipes and seamless oil and gas pipes, offering a complete range of specifications and grades for widespread use in oil, gas, water transportation, and energy-related infrastructure projects. Our API 5L pipes are manufactured to international standards, featuring high strength, long service life, and excellent corrosion resistance, making them suitable for high-pressure oil and gas pipelines worldwide.
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ASTM A671 CC65 CL 12 EFW Steel Pipes/Tubes for Industrial & Structural Applications
ASTM A671 CC65 CL 12 EFW Carbon Steel Pipes – High-Strength Welded Steel Tubes for Industrial, Structural & Pressure Applications – Custom Sizes & OD/Wall Thickness Available
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