China 1.8mm Thickness Square Steel Tube Manufacturers, Suppliers

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China 1.8mm Thickness Square Steel Tube Manufacturers, Suppliers

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Product Description

Product name	hollow section square tube
Wall Thickness	0.7mm–13mm
Length	1–14m According to customer requirements …
Outer Diameter	20mm20mm—400mm400
Tolerance	Tolerance based on Thickness: ±5～±8%; According to customer’s request
Shape	square
Material	Q195—Q345, 10#, 45#, S235JR, GR.B-D, STK500, BS1387……
Surface treatment	black
factory	yes
Standard	ASTM, DIN, JIS, BS
Certificate	ISO, BV, CE, SGS
Payment terms	30%T/T deposit in advance, 70% balance after B/L copy;
Delivery times	25 days after receive ur deposits
Package	1. Through a bundle 2. According to customer’s requirement
Loading port	Tianjin/Xingang

What benefits do customers get

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.

Product photos

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, which is 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.

Product use

Bridge construction

Bridge construction

Highway fence

Customer case

Australian customer purchase powder coating pre galvanized steel square tube. After customers receives the goods for the first time . Customer tests adhesive strength between the powder and the surface of the square tube .Customers test powder and square surface adhesion is small . We have meetings with customers to discuss this problem and we do tests all the time . we polished the surface of the square tube . Send the polished square tube to the heating furnace for heating . We tests all the time and discuss with customer all the time . We keep finding ways . After many tests, the final customer is very satisfied with the products. Now customer purchase a large number of products from 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 (FAQ)

? What sizes and wall thicknesses do you provide for the square hollow sections?

Our square tubes are available in sizes ranging from 20mm*20mm to 400mm*400mm, with wall thicknesses ranging from 0.7mm to 13mm. Custom requirements can also be met.

? What raw materials and manufacturing standards do you use?

We use high-quality materials including Q195—Q345, 10#, 45#, S235JR, GR.B-D, STK500, and BS1387. All manufacturing strictly conforms to international standards like ASTM, DIN, JIS, and BS.

? What is the delivery time and loading port for international orders?

Standard delivery is completed within 25 days after receiving the deposit. Our main loading port is Tianjin/Xingang, located just 40 kilometers from our factory, ensuring rapid shipping logistics.

? Do you accept third-party quality inspections?

Yes, our factory products hold ISO, BV, CE, and SGS certificates. We also welcome customer inspections at our factory during or after production.

? Can you accommodate special surface processing and testing requests?

Absolutely. As demonstrated in our customer cases, we work actively with clients to optimize surface conditions, such as polishing and heat treatments for specific requirements like powder coating adhesion.

? What production lines do you have in your factory?

Our advanced manufacturing setup includes 4 pre-galvanized lines, 8 ERW steel pipe lines, and 3 hot-dipped galvanized process lines, allowing us to supply a wide variety of pipe products efficiently.