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Product video
Certifications CE

Black Alloy Steel Square Pipe 30x30mm 80x80mm Q235/Q345 Hot Rolled Other Standard Hollow Tube Machinery Construction Bending

Available for enquiry 0.0 · 0 reviews
USD

$ 750.00 750.0 USD $ 750.00

Not Available For Sale

Minimum order quantity: 5 Units

Key attributes

View all
Application
Other
Grade
carbon steel
Standard
bs EN GB AiSi ASTM DIN JIS
Section Shape
Rectangular
Length
12 m, 6 m, 6.4 m, Customers' Requirements
Certificate
CE, ISO 9001, API, BSI, RoHS, SNI, Saso, BIS, PVOC, SONCAP, SABS, SIRM, TISI, KS, JIS, Gs
Product description

Product details

ASTM Steel Profile: Durable and suitable for heavy-duty applications.

Hot Rolled Surface: Ensures uniform strength and reliability.

±1% Tolerance: Precision crafted for critical mechanical components.

Origin: Direct factory supply ensures quality and affordability.

Various Lengths Available: Customizable to meet specific project needs.

Certifications & compliance
CE
Complies with EU standards
Frequently asked questions

Carbon steel square tubes are widely used in construction structures, steel frames, machinery manufacturing, fencing systems, and infrastructure projects due to their high strength and durability.

Common material grades include Q195, Q235, Q345 ( standard), and ASTM A36, ASTM A500 Grade B/C (international standards), ensuring different strength and application requirements.

We supply square tubes with sizes ranging from 10x10mm to 500x500mm, thickness from 0.5mm to 25mm, and length can be customized (usually 6m or 12m standard).

Carbon steel square tubes can be supplied in: Black (raw) Oiled Galvanized (pre-galvanized or hot dip galvanized) Painted or powder coated

Yes, we support cutting, welding, drilling, bending, and surface treatment according to your drawings or project requirements.

Our products comply with international standards such as: ASTM A500 / ASTM A36 EN 10219 / EN 10210 GB/T 6728

Most carbon steel square tubes are welded (ERW), offering cost-effective solutions. Seamless square tubes are less common and used in high-pressure or special applications.

MOQ usually starts from 5 tons, but it can be adjusted depending on stock availability or specific requirements.
Description images
Product detail
Product detail
Product detail
Product detail
CE
Packaging and fulfilment
  • Step 1

    Payment and order readiness

    Minimum order: 5 Units

    Payment terms, specifications, and order details are confirmed before preparation begins.

  • Step 2

    Preparation

    7 days

  • Step 3

    Packaging and dispatch

    Ocean + Truck via Maersk · Approx. shipping fee: $ 1,310.00 for 5 tons · Transit time: Est. 17-24 days

    Final packing, freight, and delivery dates are confirmed before dispatch.

Technical specifications
Other details 28 fields
Application
Other
Grade
carbon steel
Standard
bs EN GB AiSi ASTM DIN JIS
Section Shape
Rectangular
Length
12 m, 6 m, 6.4 m, Customers' Requirements
Certificate
CE, ISO 9001, API, BSI, RoHS, SNI, Saso, BIS, PVOC, SONCAP, SABS, SIRM, TISI, KS, JIS, Gs
Surface Treatment
Hot Rolled
Tolerance
±1%, ±10%
Special Pipe
Other
Alloy Or Not
Is Alloy
Oiled or Non-oiled
Non-oiled
Processing Service
Cutting, Bending, Welding, Decoiling, Punching
Invoicing
By Actual Weight
Delivery Time
15
Place of origin
China, Shandong
Model number (Specification)
Carbon steel square tube
Material
Q235/Q235B/Q345/Q345B
Keyword
Square Steel Pipe, Square Steel Tube, Rectangular steel pipe
Type
Rectangular Steel Tube
Usage
Building Structures
Shape
Square Rectangular Pipe Tube
MOQ
1Tons
Size
Customized Size
Packing
Standard Seaworthy Packing
Selling Units
Single item
Single package size
100X100X200 cm
Single gross weight
100.0 kg
Certifications & Compliance
CE
Lead time
7 days
Minimum order
5 Units

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