High Strength Hot Rolled Square Steel Tube for Structural Construction and Heavy Load Applications

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Product Description

ℹ️

Basic Specifications

Type
Welded
Technique
Cold Rolled, Hot Rolled
Material
Carbon Steel
Surface Treatment
Oiled / Painted / Galvanized
Section Shape
Square or Rectangular
Wall Thickness
0.50mm - 20.0mm
Steel Grade
Q195b/Q235B, S235jr/S355; ASTM A500; Stk400/Stk500
Origin
China
HS Code
7306610000
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Product Details

Black Steel Square / Rectangular Tube Hollow Section
Square Pipe Size20x20 - 500x500mm
Rectangular Pipe Size20x40 - 400x600mm
StandardEN10025, EN10219, ASTM A500, Q195, Q235, Q345
UsageSteel construction, mechanical manufacturing, shipbuilding, electricity and more
End FinishPlain end
ShipmentBy bulk or load into 20ft / 40ft containers
Hot Rolled Square Steel Tube
Grade C (%) Mn (%) Yield (Mpa) Tensile (Mpa)
Q1950.06-0.120.25-0.50≥195315-430
Q2350.12-0.200.30-0.67≥235375-500
Q345≤0.201.00-1.60≥345470-630
Steel Pipe Detail 1
Steel Pipe Detail 2
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Service & Capacity

Professional sales and quality control teams ensure every client has a satisfied purchasing experience. Our steel products are widely exported to Southeast Asia, Africa, South America, Middle East, and Oceania, including markets such as South Korea, Philippines, India, Israel, and Australia.
Production Facility
Stockyard
Technical Process
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Packaging & Shipping

Packaging Detail
Shipping Detail

Why Choose Us

  • 15+ Years Professional Manufacturing: Verified by CE, ISO, and SGS.
  • Strict Quality Control: Raw materials are inspected before production; processes are ISO managed.
  • Guaranteed Delivery: On-time shipment schedules with MTC reports provided.
  • Global Export Experience: Serving markets across Southeast Asia, Africa, South America, and the Middle East.
  • 24/7 Service: Online support for efficient pre-sale and after-sale inquiries.

Frequently Asked Questions

What materials are used for the hollow sections?
We use high-quality carbon steel, including grades like Q195, Q235, Q345, and international standards like ASTM A500 and EN10219.
What are the available size ranges for your pipes?
Square pipes range from 20mm x 20mm to 500mm x 500mm. Rectangular tubes range from 10mm x 20mm to 400mm x 600mm, with thicknesses from 0.5mm to 20mm.
What types of surface treatments do you offer?
We provide several finishes including black (bare), oiled for rust prevention, painted (yellow, orange, red, black, green), and galvanized coatings.
How do you ensure the quality of the steel pipes?
Our production is strictly controlled by ISO quality management. We provide MTC reports with shipments and accept third-party inspections (SGS, etc.) before delivery.
What is the typical delivery time and MOQ?
The delivery time is generally 10-15 days. The minimum order quantity (MOQ) is 5 tons per size.
What payment and trade terms are supported?
We support trade terms including FOB, CIF, CFR, and EXW. Payment can be made via T/T or 100% L/C at sight.

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