China Square Carbon Steel Tubes Manufacturer, Factory

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China Square Carbon Steel Tubes Manufacturer, Factory

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Product Description

The 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%
Shape	square
Material	Q195---Q345, 10#, 45#, S235JR, GR.B-D, STK500, BS1387......
Surface treatment	Galvanized
Zinc coating	Pre-galvanized square tube: 40--220G/M2 Hot dip galvanized square tube: 220--350G/M2
Standard	ASTM, DIN, JIS, BS
Certificate	ISO, BV, CE, SGS
Payment terms	30% T/T deposit in advance, 70% balance after B/L copy; 100% Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L copy 20--30days
Delivery times	25days after receive ur deposits
Package	Through a bundle According to customer’s requirement
Loading port	Tianjin/Xingang

Product Detail

Thickness

Length

Diameter

Product photos

Zinc coating

diameter detail

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.

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 Photos

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

Customer Photos

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

Main Products

Frequently Asked Questions (FAQ)

Q What materials are your hollow section square tubes available in?

Our square tubes are manufactured in a wide range of materials, including Q195 to Q345, 10#, 45#, S235JR, GR.B-D, STK500, BS1387, and others to meet diverse industrial needs.

Q What options do you offer for zinc coating?

We offer both pre-galvanized square tubes with a coating thickness of 40–220 G/M² and hot-dip galvanized square tubes with a coating thickness of 220–350 G/M².

Q What are your standard product sizes and thickness levels?

We support wall thicknesses ranging from 0.7mm to 13mm and lengths from 1m to 14m (or customized to your exact requirements). Outer diameters vary from 20mm*20mm up to 400mm*400mm.

Q What certification standards do your products comply with?

All our steel products comply strictly with ASTM, DIN, JIS, and BS standards, and are certified under ISO, BV, CE, and SGS systems to ensure top tier quality.

Q What are the standard delivery times and payment terms?

Our standard delivery time is 25 days after receiving your deposit. We accept 30% T/T deposit in advance with the remaining 70% balance paid after receiving the B/L copy, as well as 100% Irrevocable L/C at sight, or 100% Irrevocable L/C 20–30 days after receiving the B/L copy.

Q What unique advantages does your factory provide over trading companies?

As a direct manufacturing factory, we offer competitive pricing options, guaranteed delivery timelines, and premium quality control. Additionally, we own three national patents for groove, shoulder, and victaulic pipes, and are located only 40 km from northern China's largest port (Xingang), ensuring efficient transport and reduced logistics costs.