China Square Metal Tube Q235 Manufacturers, Supplier

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China Square Metal Tube Q235 Manufacturers, Supplier

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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	Through a bundle According to customer’s requirement
Loading port	Tianjin/Xingang

Customer’s Benefit

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 product lines, 8 ERW steel pipe product lines, and 3 hot-dipped galvanized process lines.

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 size ranges are available for your hollow section square tubes?

We offer hollow section square tubes with an outer diameter range of 20mm*20mm to 400mm*400mm and a wall thickness from 0.7mm to 13mm. The length can be customized between 1m and 14m according to your requirements.

What materials and production standards do you support?

Our products are manufactured according to ASTM, DIN, JIS, and BS standards. We support various materials including Q195—Q345, 10#, 45#, S235JR, GR.B-D, STK500, and BS1387, all certified with ISO, BV, CE, and SGS certifications.

What are the key advantages of purchasing directly from your factory?

By ordering directly from our manufacturing facility, you benefit from highly competitive factory pricing over trading companies. We also ensure precise quality control and guaranteed delivery timelines for customer satisfaction.

How convenient is the shipping location for international logistics?

Our factory is located just 40 kilometers from Xingang Port (Tianjin), the largest port in Northern China. This close proximity ensures fast transit times and lowered local transport costs to the loading port.

What are your standard payment terms and delivery times?

We require a 30% T/T deposit in advance, with the remaining 70% balance due upon receipt of the B/L copy. Standard delivery takes approximately 25 days after the deposit is received.

How do you handle special quality requests or surface treatments?

We have extensive experience addressing custom demands. For instance, to ensure strong powder coating adhesion on galvanized surfaces, we utilize heating and specialized polishing processes, coordinating directly with customers until all quality requirements are met.