China Hot DIP Iron Pipe Galvanized Square Steel Tube Building Material

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%; According to customer's request
Shape	square
Material	Q195---Q345, 10#, 45#, S235JR, GR.B-D, STK500, BS1387......
Surface treatment	Galvanized
Zinc coating	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;
Delivery times	20 days after receive ur deposits
Package	Through a bundle According to customer’s requirement
Loading port	Tianjin/Xingang

Product Detail

Square hollow section thickness test

Square hollow section length test

Square hollow section diameter test

Square hollow section Product photo

Square hollow section zinc coating

Square hollow section warehouse

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

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

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

Frequently Asked Questions

What sizes of hollow section square tubes do you supply?

We offer hollow section square tubes with an outer diameter range of 20mm*20mm to 400mm*400mm, wall thickness options from 0.7mm to 13mm, and custom lengths from 1 to 14 meters.

What materials and standards do your square tubes meet?

Our steel tubes are manufactured using high-quality materials including Q195 to Q345, 10#, 45#, S235JR, GR.B-D, STK500, and BS1387. They comply fully with ASTM, DIN, JIS, and BS standards.

What is the zinc coating specification for your galvanized square tubes?

For hot-dip galvanized square tubes, the zinc coating density is standard at 220 to 350G/M2, providing robust protection against corrosion and environmental wear.

What quality certificates do your products hold?

Our manufacturing processes and final steel tube products hold recognized industry certifications including ISO, BV, CE, and SGS.

What is the typical delivery schedule and shipment port?

The standard delivery time is 20 days after receiving the initial deposit. Our main loading port is Tianjin/Xingang.

How are the products packaged for transportation?

The products are packaged securely either in standard bundles or tailored precisely according to the specific transport and handling requirements of the customer.