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Large Diameter Heavy Wall Square & Rectangular Steel Tubes for Structural Applications

Fuyuansheng large diameter heavy wall square and rectangular steel tubes are LSAW-welded hollow structural sections designed for heavy-duty steel structures, bridges, large-span buildings, industrial facilities, and engineering projects requiring high load capacity and large cross-sections.

Available in square and rectangular configurations with wall thicknesses from 18 mm to 80 mm, these structural steel tubes can be supplied in different steel grades, sizes, lengths, and surface finishes according to project requirements.

Product Specifications

Item	Square Hollow Section (SHS)	Rectangular Hollow Section (RHS)
Product Type	Large Diameter Heavy Wall Square Steel Tube	Large Diameter Heavy Wall Rectangular Steel Tube
Size Range	300 × 300 – 1200 × 1200 mm	250 × 350 – 1200 × 1100 mm
Wall Thickness	18–80 mm	18–80 mm
Length	5800–16000 mm	5800–16000 mm
Steel Grades	S235 / S275 / S355 / S420 / S460 / S690	S235 / S275 / S355 / S420 / S460 / S690
Standards	EN 10210 / EN 10219 / ASTM A500 / ASTM A501 / JIS S3466 / ASTM A1085	EN 10210 / EN 10219 / ASTM A500 / ASTM A501 / JIS S3466 / ASTM A1085
Surface Options	Black / Shot Blasted / HDG / Zinc-Rich Primer	Black / Shot Blasted / HDG / Zinc-Rich Primer

Custom dimensions, steel grades, lengths, and surface treatments can be discussed according to project requirements.

Advantage

Large Diameter & Heavy Wall
Large cross-sections and 18–80 mm wall thickness provide the strength and section capacity required for heavy structural applications.

LSAW Manufacturing
Longitudinal double-sided submerged arc welding is suitable for producing large-diameter and thick-wall hollow sections with reliable weld quality.

High-Strength Steel Options
Steel grades up to S690 are available for projects requiring higher strength and structural performance.

Flexible Specifications
Square and rectangular profiles can be supplied in different dimensions, lengths, wall thicknesses, and steel grades to meet project requirements.

Surface Protection
Black finish, shot blasting, hot-dip galvanizing, and zinc-rich primer are available for different fabrication and corrosion protection requirements.

Heavy wall structural steel tubes for low-temperature and heavy-duty projects

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Applications

Large diameter heavy wall square and rectangular steel tubes are suitable for demanding structural and engineering applications requiring large sections, high strength, and heavy wall construction.

High-Rise & Large-Span Steel Buildings
Used as box columns and major structural members for stadiums, exhibition centers, industrial workshops, and high-rise steel frame structures.

Bridges & Municipal Infrastructure
Applied to bridge pier columns, overhead load-bearing supports, and heavy structural components for port and municipal infrastructure.

Heavy Engineering Machinery
Suitable for crane base frames, large equipment load-bearing supports, and wind power support structures where high structural capacity is required.

Overseas Export Projects
Used in international projects including Middle East airports, stadiums, and industrial plants, with LSAW box sections suitable for demanding European and American steel structure requirements.

Special Heavy-Duty & Low-Temperature Projects
Designed for demanding applications such as cold-region structures, auxiliary frames for offshore platforms, and heavy equipment foundation supports.

Large diameter square steel tubes for high-rise and large-span steel buildings

FAQs

Q1. What sizes are available for large diameter square and rectangular steel tubes?

A1: Square tubes are available from 300 × 300 mm to 1200 × 1200 mm, while rectangular tubes range from 250 × 350 mm to 1200 × 1100 mm, with wall thicknesses of 18–80 mm.
Q2. What steel grades are available?

A2: Available steel grades include S235, S275, S355, S420, S460, and S690, depending on the required standard and project specifications.
Q3. Can the square and rectangular steel tubes be customized?

A3: Yes. Section size, wall thickness, length, steel grade, surface treatment, and inspection requirements can be customized according to project drawings and technical specifications.