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Help CenterSquare Tube，Q235B、Q355B、S235JR、S355JR、 ASTM A500
Related Products
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Square Tube，Q235B、Q355B、S235JR、S355JR、 ASTM A500NegotiableMOQ: 5 Metric Tons -
Square Tube，Q235B、Q355B、S235JR、S355JR、 ASTM A500NegotiableMOQ: 5 Metric Tons
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Square Steel• GB/T 702, GB/T 905 • EN 10025 • ASTM A36, A108NegotiableMOQ: 5 Metric Tons
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Square Steel• GB/T 702, GB/T 905 • EN 10025 • ASTM A36, A108NegotiableMOQ: 5 Metric Tons
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Galvanized Round Steel，GB/T 700, GB/T 13912, GB/T 6728, ASTM, EN, JISNegotiableMOQ: 2 Metric Tons
1. Product Introduction
Square steel tubes (also known as square hollow sections, rectangular tubes) are widely used in construction, steel structures, machinery manufacturing, curtain walls, fences, greenhouses, steel frames and other engineering fields. We supply high-quality welded & seamless square pipes with various materials and surface treatments to meet different international market demands.
2. Material & Standards
- Materials: Q235B, Q355B, S235JR, S355JR, ASTM A500 Grade A/B/C, etc.
- Execution standards: GB/T 6728, EN 10219, ASTM A500, BS standards
- Surface treatment: Black steel / Mill finish, Hot-dip galvanized, Painted
3. Production Process
- ERW high-frequency welded square tube
- Seamless square tube (hot-rolled / cold-drawn)
- Good straightness, stable welding performance, easy to cut, drill and weld
4. Size & Specification
- Shape: Square tube, Rectangular tube
- Wall thickness: 1.0 mm – 20.0 mm
- Standard length: 6 meters, 12 meters
- Custom lengths and sizes according to customer drawings or requirements are available.
5. Packaging
- Standard export packaging: Bundled with steel strips, covered with plastic film
- Wooden pallets or steel pallets can be provided as required
- Suitable for long-distance sea transportation and land transportation
6. Main Applications
- Building and steel structure engineering, workshops, warehouses
- Curtain wall, support columns, steel frames
- Fences, guardrails, shelves
- Mechanical equipment, pipe supports, greenhouse structures
7. Our Advantages
- Factory direct supply with competitive price
- Complete specifications, stable quality
- Fast delivery and flexible MOQ
- Accept OEM & ODM customization
- Professional quality inspection and mature export service
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