High-Strength Corrosion Resistant Customizable Rectangular Steel Tubes for Structural Support

Name: High-Strength Corrosion Resistant Customizable Rectangular Steel Tubes for Structural Support
Brand: Sichuan Shunyao Supply Chain Management Co., Ltd.

High-strength rectangular steel tubes for structural buildings. Custom sizes, ASTM standards, galvanized/painted finish. High corrosion & fire resistance, low maintenance, easy installation. Wind/snow/earthquake design, up to 10,000 lbs load capacity.

Working Scope Design,Fabrication, Installation

Shape I-beam, H-beam, or C-channel

Fire Resistance Class A fire rating

Transportation Containerized

Packaging Details Bundles

Design Parameter Wind Load,Snow Load And Earthquake

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Product Description

High-Strength Rectangular Steel Tubes for Steel Structure Buildings

Product Overview

Our high-strength rectangular steel tubes (Rectangular Hollow Sections - RHS) are engineered specifically to provide maximum structural integrity for modern steel structure buildings, industrial warehouses, PEB (Pre-Engineered Buildings), and commercial factories. Manufactured using premium-grade steel and advanced high-frequency welding (ERW) or seamless processes, these tubes offer an outstanding strength-to-weight ratio, exceptional durability, and superior resistance to torsional loading.

We provide full customization of dimensions, wall thicknesses, lengths, and surface finishes (including pre-galvanized, hot-dip galvanized, and anti-corrosion painting) to precisely match your architectural blueprints and local building codes.

Quick Details & Specifications

Product Type: Rectangular Hollow Section (RHS), Structural Steel Tube
Standard: ASTM A500 Grade B/C, EN 10219 (S235JRH, S355J2H), GB/T 6728 (Q235B, Q355B), JIS G3466
Material Grade: Q235B, Q355B, S235, S355, Gr.B, Gr.C
Outer Diameter (Section Size): 20x30 mm to 400x600 mm (Custom sizes available)
Wall Thickness: 1.2 mm to 16.0 mm
Length: 1.0 m to 12.0 m (Standard export lengths: 5.8m, 6.0m, 11.8m, 12.0m for container loading)
Surface Treatment: Black/Bare, Lightly Oiled, Pre-galvanized (40-200g/m²), Hot-dip Galvanized (200-600g/m²), Anti-rust Primer Painting
End Processing: Plain ends, square cut, burr removed
Application: Column and beam frameworks, truss systems, roof purlins, agricultural greenhouses, prefabricated modular housing, industrial platforms

Technical Specification & Theoretical Weight

Section Size (H x W mm)	Wall Thickness (t mm)	Cross-Sectional Area (cm²)	Theoretical Weight (kg/m)	Standard Export Length (m)
50 x 100	2.0 / 3.0 / 4.0	5.64 / 8.26 / 10.70	4.43 / 6.48 / 8.40	5.8 / 6.0
60 x 120	3.0 / 4.0 / 5.0	10.06 / 13.10 / 15.90	7.90 / 10.28 / 12.48	5.8 / 6.0
80 x 120	3.0 / 4.0 / 5.0	11.26 / 14.70 / 17.90	8.84 / 11.54 / 14.05	5.8 / 6.0 / 11.8 / 12.0
100 x 150	4.0 / 5.0 / 6.0	18.70 / 22.90 / 26.90	14.68 / 17.98 / 21.12	5.8 / 6.0 / 11.8 / 12.0
100 x 200	4.0 / 6.0 / 8.0	22.70 / 32.90 / 42.40	17.82 / 25.83 / 33.28	5.8 / 6.0 / 11.8 / 12.0
150 x 250	5.0 / 6.0 / 8.0	37.90 / 44.90 / 58.40	29.75 / 35.25 / 45.84	5.8 / 6.0 / 11.8 / 12.0
200 x 300	6.0 / 8.0 / 10.0	56.90 / 74.40 / 91.40	44.67 / 58.40 / 71.75	11.8 / 12.0
250 x 400	8.0 / 10.0 / 12.0	98.40 / 121.40 / 143.40	77.24 / 95.30 / 112.57	11.8 / 12.0
300 x 500	8.0 / 12.0 / 16.0	114.40 / 167.40 / 217.40	89.80 / 131.41 / 170.66	11.8 / 12.0

Key Product Features

High Load-Bearing Capacity & Rigidity: Optimized for heavy-duty structural applications, allowing for longer spans and reduced overall steel consumption in industrial buildings.
Outstanding Corrosion Resistance: Our hot-dip galvanized coating option provides up to 600g/m² of zinc protection, guaranteeing a lifespan of 20+ years in harsh tropical, coastal, or high-humidity environments.
Engineered for Precise Fitting: Uniform thickness, tight tolerances, and perfectly de-burred square cut ends ensure smooth on-site welding or high-strength bolt connections.
Flexible Customization (Made-to-Order): We accommodate specialized requests for chemical compositions, mechanical properties, exact cut-to-length requests, and specific bundle packing according to project blueprints.

Applications

Industrial Infrastructure: Primary columns, roof trusses, and mezzanine beams for steel warehouses, commercial factories, and hangars.
Prefabricated Modular Buildings: Main load-bearing wall frames and base platforms for flat-pack container houses and labor camps.
Agricultural Frameworks: Heavy-duty structural pillars and long-span framing for commercial modern film/glass greenhouses.

Packing & Container Loading Logistics

Seaworthy Packing: Tied firmly with heavy-duty steel strips in hexagonal bundles, wrapped with waterproof PVC woven fabric upon request to prevent salt spray corrosion during ocean transit.
20ft GP Container: Best suited for lengths up to 5.8m / 5.9m. Maximum loading capacity is approximately 25-28 metric tons.
40ft GP/HQ Container: Best suited for lengths up to 11.8m / 12.0m. Maximizes volume and weight for long structural profiles.