China Hot Dip Galvanized Steel Square Tube Manufacturer, Factory

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China Hot Dip Galvanized Steel Square Tube Manufacturer, Factory

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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 - 400mm400mm
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	Galvanized
Zinc coating	Pre-galvanized square tube: 40 - 220 G/M² Hot dip galvanized square tube: 220 - 350 G/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
Delivery times	25 days after receiving deposits
Package	1. Through a bundle 2. According to customer’s requirement
Loading port	Tianjin/Xingang

What Benefits Do Customers Get?

✓ Direct Factory Pricing We are a factory, which ensures our price holds a significant competitive advantage over trading companies.
✓ Reliable Delivery Timeline Rest assured about the delivery schedule. We guarantee on-time delivery and high-quality standards to achieve complete customer satisfaction.

Product Details

Thickness

Length

Diameter

Product Photos

Zinc Coating

Diameter Detail

Different from Other Factories

✓ Patented Pipelines We have applied for and received 3 distinct patents (Groove pipe, Shoulder pipe, and Victaulic pipe).
✓ Strategic Port Proximity Our factory is located just 40 kilometers from Xingang Port, the largest shipping port in Northern China, enabling prompt and efficient logisitical dispatch.
✓ Advanced Production Capacity Our infrastructure is equipped with 4 pre-galvanized manufacturing lines, 8 ERW steel pipe lines, and 3 hot-dipped galvanized treatment lines.

Product Photos

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

Customer Case

Customized Coating Solutions for Australian Client

An Australian customer purchased powder-coated pre-galvanized steel square tubes. Following the initial delivery, the client tested the adhesion strength between the powder coating and the square tube's surface, noting that the adhesion did not meet their internal standard.

We immediately organized collaborative technical sessions with the customer to analyze and resolve the issue. By setting up continuous test runs, we polished the surface of the square tube and optimized the temperature configuration of the heating furnace. After extensive adjustments and validation, the customer was highly satisfied with the final delivery. The customer now orders a significant volume of products from our factory on a monthly basis.

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)

Q1: What range of wall thicknesses and sizes do you offer for square tubes?

A: We manufacture hollow section square tubes with wall thicknesses ranging from 0.7mm to 13mm, and outer diameters from 20mm*20mm up to 400mm*400mm. Customized lengths are available between 1m and 14m.

Q2: Which materials and quality standards do your products comply with?

A: Our products are manufactured using high-quality steel grades such as Q195 to Q345, 10#, 45#, S235JR, GR.B-D, STK500, and BS1387. They comply fully with ASTM, DIN, JIS, and BS standards, and hold certifications including ISO, BV, CE, and SGS.

Q3: What zinc coating levels do you support on galvanized square tubes?

A: We provide pre-galvanized square tubes with zinc coatings ranging from 40 to 220 G/M², and hot-dip galvanized square tubes with coatings from 220 to 350 G/M².

Q4: What are the standard delivery lead times and payment terms?

A: Our typical lead time for delivery is 25 days after the receipt of the initial deposit. Our payment structures require a 30% T/T deposit in advance, with the remaining 70% balance settled against the B/L copy.

Q5: Which shipping ports do you operate from, and what is your factory location advantage?

A: We ship out of the Tianjin/Xingang port. Our factory is located just 40 kilometers from the port, which is the largest port in Northern China, ensuring fast logistics and timely shipping.

Q6: Can you customize product processes based on customer-specific requirements?

A: Yes. We have a history of successful customization. For instance, for an Australian client requiring optimized powder coating adhesion, we successfully modified our processing by polishing the tube surface and pre-heating the material using a specialized heating furnace to meet their expectations.