Product Introduction
Square Tube is a hollow steel tube with a square cross-section, widely used in fields such as construction, machinery, boiler manufacturing, and vehicle manufacturing. Its structure is lightweight, strong, and has good bending resistance, making it suitable for scenarios such as support, frame, and conveyor systems.
Product parameters
| product name | Square tube |
| port | Qingdao Port, Tianjin Port, Guangdong Port. |
| delivery time | 7~15 days |
| country of origin | Shandong, China |
| productivity | 50000000 tons /year |
| package | Standard export packaging |
| standard | ASTM GB |
W.T
| 0.6-30mm |
Certificate
| ISO GB 12606 |
| Shape | Square tube |
| Size | 20x20--500x500mm |
Main Use
| Scaffolding, structure, Fence.Furniture |
Transport Package
| Standard Export Packing |
Surface
| Hot DippedGalvanized |
| Dimensional Inspection | Calipers,Height Laugue,Micrometer Calipers,Inside Caliper Gauge,Angle and R Gauge,four coordinates measuringinstrument. |
Company Profile
Shandong Jiaguang International is a high-tech enterprise focusing on the research and development, production, sales and service of boiler parts. The company has 30 years of manufacturing experience, as well as modern production base and senior technical team, to ensure to meet the needs of friends from all walks of life for products, and through the ISO9001 international quality system certification, CE certification, SGS origin certification.
The company's main products cover: Active grate, passive grate, grate pin, beam grate, scale grate, reciprocating grate, fixed grate, grate, chain grate, chain rod, scraper accessories, buried scraper chain, boiler hood, boiler tube, steel pipe, square tube, gear and other heat resistant, wear-resistant, corrosion resistant boiler accessories, widely used in electricity, heat, heating, paper mill, printing and dyeing factory, sugar factory, animal farming, Feed mill, chemical industry, etc. Products are exported to Vietnam, Singapore, Thailand, India, India, Pakistan, Tajikistan, Australia, New Zealand, Mexico, Russia, Malaysia, Philippines, South Africa and other more than 30 countries and regions.
It is committed to providing high-quality accessories and solutions for global industrial boilers, power station boilers, civil boilers and other fields, and has become a global benchmark enterprise in the field of boiler accessories.
Product Certification
Product packaging
Common packaging methods 1. Bundled packaging (most commonly used) Method: Use steel or plastic strapping to tie the square tubes into neat square or hexagonal bundles.
Applicable to:
Small size square tube (side length ≤ 100mm)
Large scale transportation (such as 6-meter/12m fixed length pipes)
characteristic:
The weight of each bundle is usually ≤ 3 tons (for easy loading and unloading)
Number of bundling lanes: at least 2-3 lanes (both ends+middle)
The outer layer can be covered with moisture-proof paper or plastic film
2. bulk Method: Directly stacked in trucks or containers without fixed packaging.
Applicable to:
Thick walled square tube for large-scale engineering (such as side length ≥ 200mm)
Short distance transportation or customer specified requirements
Product transportation Transportation mode selection:
1. Road transportation (truck/truck) Applicable scenarios:
Short distance transportation (≤ 500 kilometers)
Small batch or on-site direct supply 2. Railway transportation Applicable scenarios:
Medium to long distance transportation (500~2000 kilometers)
Large scale supply (such as centralized engineering procurement) 3. Sea freight (container/bulk carrier) Applicable scenarios:
Export trade or cross-border transportation
Extra long pipe (12 meter fixed length) FAQ:
Frequently Asked Questions about Square Pipes (Q&A format)
Q1: What is the difference between square tube and round tube? Which one is better?
A1:
Structural difference: Square tubes have a hollow square cross-section, while circular tubes have a circular cross-section.
Performance comparison:
Square tube: With stronger bending and torsion resistance, it is suitable for making frames and supporting structures (such as shelves and building steel structures).
Round tube: With low fluid resistance, it is more suitable for transporting liquids/gases (such as water and oil pipes).
Selection suggestion: Depending on the purpose, square tubes are preferred for load-bearing structures, while circular tubes are preferred for fluid transmission.
Q2: How to choose the "side length" and "wall thickness" of square tubes?
A2:
Edge length: determined according to the load-bearing requirements, for example:
Small shelf: 30 × 30mm
Building crossbeam: above 100 × 100mm
Wall thickness:
Light load (decoration/furniture): 1-2mm
Heavy load (mechanical/construction): 3-5mm
High pressure/high temperature environment: ≥ 6mm (seamless square tube required)
Q3: What should I do if the surface of the square tube rusts? How to prevent rust?
A3:
Rust removal method:
Mild rusting: Polish with sandpaper and brush with anti rust paint.
Severe corrosion: sandblasting or acid washing treatment.
Rust prevention measures:
Outdoor use: Choose galvanized square tube or stainless steel square tube (such as 304).
Regular maintenance: Apply rust proof oil or epoxy resin paint.
Q4: What is the general length of a square tube? Can it be customized?
A4:
Standard length: 6 meters or 12 meters (common in China), some manufacturers provide specifications such as 5.8 meters and 11.8 meters.
Customized length:
It can be cut into any size (such as 2 meters, 3 meters), but processing fees may be charged.
Extra long square tubes (>12 meters) require special order production. What is the difference between welded square tube and seamless square tube?
Q5: Can square tubes be bent? How to avoid deformation?
A5:
Flexibility:
Thin walled square tubes (≤ 2mm) can be cold-formed, but require a dedicated bending machine.
Thick walled square tubes (>3mm) need to be heated and bent (such as medium frequency bent tubes).
Anti deformation techniques:
Fill the tube with sand or insert a core rod before bending.
Avoid repeatedly bending the same position.
Contact our professional engineering team promptly when encountering any questions!
