China q345 Powder Coated Square Tube Manufacturers, Factory

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China q345 Powder Coated Square Tube Manufacturers, Factory

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Product Description

Product Name

Powder coating square tube

Product Detail

Standard	GB/T6728--2002, ASTMA500GR.A.B.C, JIS G3466
Steel Grade	Q195--Q235
Sizes	10mm10mm---1000mm1000mm / 10mm20mm---5001000mm
Thickness	0.6*30.0mm
The Section Shape	Square / Rectangular
Country of Origin	China (Mainland)
Provinces	Tianjin
Application	Structure Pipe
Certificate	CE
Surface Treatment	Powder Coating
Whether the Alloy	Non-alloy
Factory	Yes

Product Display

Products Use

Customer's Benefit

We are factory (our price will have an advantage over trading companies).
Don't worry about the delivery date. We are sure to deliver the goods in time and quality to achieve customer satisfaction.

Different From Other Factories

We applied for and received 3 patents (Groove pipe, Shoulder pipe, Victaulic pipe).
Port: Our factory is just 40 kilometers from Xingang port, the biggest port in the north of China.
Our manufacturing equipment includes 4 pre-galvanized products lines, 8 ERW steel pipe product lines, and 3 hot-dipped galvanized process lines.

Customer Case

An Australian customer purchased powder coating pre-galvanized steel square tubes. After receiving the goods for the first time, the customer tested the adhesive strength between the powder and the surface of the square tube, finding that the adhesion was insufficient.

We held meetings with the customer to discuss this problem and conducted continuous testing. We polished the surface of the square tube and sent the polished square tube to the heating furnace for heating. After many tests and continuous communication, the customer was highly satisfied with the improved products. Now, this customer purchases a large number of products from our factory every month.

Customer Photos

The customer purchased steel pipes in our factory. After the goods were produced, the customer came to our factory for inspection.

Produce Products

Hot-dipped-Galvanized-Steel-Pipe-Square-Tube

Frequently Asked Questions

What standards and steel grades are your powder coating square tubes manufactured to?

Our powder coating square tubes are manufactured in strict compliance with GB/T6728--2002, ASTMA500GR.A.B.C, and JIS G3466 standards, utilizing high-quality Q195 to Q235 steel grades.

What sizes and thickness ranges are available?

We offer square and rectangular tubes with sizes ranging from 10mm*10mm to 1000mm*1000mm (for square section) and 10mm*20mm to 500*1000mm (for rectangular section). Available wall thickness ranges from 0.6mm to 30.0mm.

What are the advantages of sourcing directly from your factory?

As a direct manufacturer, we offer competitive factory pricing over traditional trading companies. Additionally, we ensure strict quality control and guarantee reliable delivery dates.

What proprietary or patented products do you produce?

We have applied for and successfully received 3 key product patents, which cover Groove pipe, Shoulder pipe, and Victaulic pipe designs.

How do you ensure proper adhesion of the powder coating?

To guarantee strong adhesion, we polish the surface of the square tube and apply a specialized thermal treatment inside our heating furnaces. Continuous quality tests are conducted to meet and exceed customer standards.

Do your structural pipes have international certification?

Yes, our structural square and rectangular steel pipes are CE certified, confirming compliance with health, safety, and environmental protection standards.