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Carbon Steel Welded Square Rectangular Hollow Tube for Construction
Product Introduction
Our carbon steel welded square pipe and rectangular steel tube (square & rectangular hollow tube) are manufactured with high-quality carbon steel through advanced welding technology. Featuring seamless welding, precise dimension, smooth surface and uniform wall thickness, these hollow steel pipes meet international standards. We support customization of cross-section size, wall thickness and length, widely applied in construction steel structures, municipal engineering, mechanical equipment manufacturing, agricultural facilities and outdoor projects.
Product Advantages
Stable Welding Structure:
Firm weld joint, high bearing capacity, not easy to crack under heavy
load.
High-Quality Carbon Steel Material:
Good toughness, compression resistance and long service life.
Light-Weight Hollow Design:
Easy to transport, install and process such as cutting, welding andpunching.
Customizable Specifications:
Support multiple square & rectangular sizes, wall thickness and lengthcustomization.
Cost-Effective:
Low processing and maintenance cost, ideal for large-scale engineering projects
FAQs
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Q1: What material are your square and rectangular tubes made of?
A1: High-quality carbon steel with reliable welded structure, hot-dipped galvanized treatment is optional.
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Q2: Can you customize sizes of carbon steel welded hollow tubes?
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Q3: What production standards do your steel pipes comply with?
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Q4: How long is your delivery time?/span>
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Q5: Is small trial order acceptable?
Application Scenarios
Building Steel Structure:
Workshop frame, building support beam, steel structure engineering
Municipal Engineering:
Road guardrail, street lamp pole, municipal support facilities.
Mechanical Manufacturing:
Equipment frame, machinery bracket, automotive components.
Agricultural Facilities:
Greenhouse frame, agricultural equipment support frame.
Outdoor Projects:
Solar bracket, storage rack, outdoor fence and guardrail.
Factory Tour
Product Specifications
| Grade | Chemical Composition % | Mechanical Property | ||||||
| C | Mn | S | P | Si | Yield Strength Mpa | Tensile Strength Mpa | Elongation % | |
| Q195 | 0.06-0.12 | 0.25-0.50 | ≤0.045 | ≤0.05 | ≤0.30 | >195 | 315-430 | ≥33 |
| Q215 | 0.09-0.15 | 0.25-0.55 | ≤0.050 | ≤0.045 | ≤0.30 | >215 | 335-450 | ≥27 |
| Q235 | 0.12-0.20 | 0.30-0.67 | ≤0.045 | ≤0.04 | ≤0.30 | >235 | 375-500 | ≥26 |
| Q345 | ≤0.20 | 1.0-1.6 | ≤0.040 | ≤0.04 | ≤0.55 | >345 | 470-630 | ≥22 |
Packing&Shipping
Adopt export-standard steel strip bundling packaging, wooden box packaging is available on request.We cooperate with reliable logistics companies and support sea, land and air transportation to ensure safeand on-time delivery to global destinations.