ASTM A53 A36 Galvanized Q195 Q235 Hot DIP Square 201 304 316L Stainless Steel Precision Tube Galvanized Seamless Steel Pipe Tube

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Product Description

Basic Specifications

Model NO.
Hot Dipped
Type
Seamless Welded
Technique
Hot Rolled / Cold Drawn / ERW
Material
Carbon Steel / Alloy Steel
Surface Treatment
Galvanized
Section Shape
Round / Square / Oval / Rectangular
MOQ
1 Ton
Standard
AISI, Jib, En, GB
HS Code
7306690000
Capacity
1000 Ton/ Month
Galvanized Steel Tube

Product Description

Product Name Q235B Square Galvanized Carbon Steel Tube
OD Size 15x15mm-600x600mm / 20x30mm-600x800mm
Wall Thickness 1.2mm-20mm (SCH30, SCH40, STD, XS, SCH80, etc.)
Length Less Than 12m
Steel Grade Q195, Q215, Q235 (Grade B/C/D, SS330, SPHC, S235JR)
Standard BS EN10296, EN10025, GB/T13793-1992, etc.
Ends Plain, Beveled, or Thread with Coupling
Surface Bared, Black Painted, Galvanized, Oiled, 3PE/FBE Coating
01

Structural Performance

  • Tensile Strength: 330-550 MPa for mild steel; up to 650 MPa for HSLA.
  • Yield Strength: 235-355 MPa depending on thickness.
  • Moment of Inertia: 20-30% higher than round pipes of equivalent weight.
02

Corrosion Resistance

  • Barrier Protection: Zinc layer physically separates steel from moisture/oxygen.
  • Cathodic Protection: Sacrificial corrosion ensures protection even if scratched.
  • Cost-Effective: 50-70% lower lifecycle cost than stainless steel.
Production Process Steel Quality Galvanized Layer

Dimensions & Sizes

Size Chart Diagram
SHS (Square) WT (mm) RHS (Rectangular) WT (mm)
16*16 to 25*250.8-2.020*40 to 30*500.8-2.0
30*30 to 40*400.8-2.040*60 to 40*800.8-2.2
50*50 to 80*801.0-2.250*100 to 50*751.0-2.2
100*1001.0-2.338*751.0-2.2
Inventory 1 Inventory 2 Inventory 3

Galvanized square pipes are a versatile engineering solution, combining the structural integrity of carbon steel with the corrosion resistance of zinc coatings. From towering industrial frameworks to everyday consumer products, their reliability and cost-effectiveness make them a staple in modern construction and manufacturing.

Detail 1 Detail 2
Packaging

Frequently Asked Questions

Q: What main products can you supply?
A: We provide professional manufacturing for Stainless steel sheets, coils, tubes, and profiles; Corten steel; Wear-resistant steel and various Carbon steels.
Q: Do you accept customized and OEM orders?
A: Yes, we can produce based on your specific drawings and requirements. Our strong design and development team ensures high-quality customized results.
Q: What are the standard payment terms?
A: Commonly, we accept 30% T/T as a deposit with 70% balance against B/L copy, or 100% irrevocable L/C at sight.
Q: Are samples available for testing?
A: Yes, we supply samples. Stock samples are free; for new production samples, we charge a reasonable cost which is deducted from your first official order.
Q: What is the average delivery time?
A: With an inventory of over 8000 tons, common sizes can be delivered within 5 days. Special production orders typically take 20-30 days.
Q: How do you guarantee shipment quality?
A: All facilities are ISO9001 certified. We conduct in-house laboratory inspections and support third-party inspections such as SGS or BV before delivery.
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