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Solar Square Tube

Solar Square Tube

Solar square tube is made from Q235B or Q355B steel with zinc-aluminum-magnesium coating. Common square sizes include 40×40, 50×50, 60×60, 80×80, and 100×100 mm, with 2.0-5.0 mm wall thickness and 6-12 m length.
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Description

Solar square tube is used as a column, beam, purlin, or brace in photovoltaic support structures. It is also used in carport PV, ground PV, and tracking support frames. The advantage is the ZAM coating: AZM120, AZM150, or AZM275 can be selected, and the magnesium content helps cut edges resist red rust better than common pre-galvanized sheet in many PV support conditions.

 

Product Parameters

 

Parameter

Specification

Material

Q235B or Q355B

Strength Data

Q235B yield ≥235 MPa; Q355B yield ≥355 MPa

Square Size

40×40, 50×50, 60×60, 80×80, 100×100 mm

Rectangular Size

40×60, 40×80, 50×100, 60×80 mm

Wall Thickness

2.0, 2.5, 3.0, 4.0, 5.0 mm

Length

6 m, 9 m, 12 m or fixed length

Surface Treatment

ZAM AZM120, AZM150, AZM275; passivated and anti-fingerprint surface

 

Product Advantages

 

1) Solar square tube uses a closed section, so it has good torsion resistance for columns, beams, and braces in PV frames.

2) Q355B can be selected for 60×60, 80×80, and 100×100 heavy positions when the support row has longer span.

3) ZAM coating provides cut-edge self-protection, which is useful after punching, sawing, or on-site trimming.

Main Applications

Used for PV ground supports, solar carports, roof support frames, purlins, braces, and tracking support structures.

Suitable for PV projects that need square or rectangular steel tube with ZAM surface.

Processing Options

Cutting, punching, slotting, bending, and end cap preparation can be arranged by drawing.

Cut edges can be protected with zinc-rich repair coating when the project requires additional edge treatment.

 

Quality Check

Inspection focuses on the dimensions that affect installation, not only the outside appearance.

The checked data can include diameter, hole distance, thickness, thread fit, coating surface, and packing mark.

17770210274505

 

FAQ

 

Q: What coating weight can be selected?

A: AZM120, AZM150, and AZM275 are common ZAM coating options. AZM150 is often used for standard PV supports, while AZM275 can be selected for stronger corrosion conditions.

Q: Which size is common for purlins?

A: 40×60×2.0/2.5 mm and 50×50×2.0/2.5/3.0 mm are common support sizes.

Q: Can solar square tube be punched before delivery?

A: Yes. Holes and slots can be processed according to the PV bracket drawing.

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