China Factory For erw galvanized round steel piping /erw gi pipe hollow section /erw constructional welded pipes Factory, Factories

Product Description

To meet customers' over-expected pleasure, our sturdy group offers the best overall service which incorporates advertising and marketing, product sales, designing, production, quality managing, packing, warehousing and logistics for ERW galvanized round steel piping, ERW GI pipe hollow section, and ERW constructional welded pipes. Customer satisfaction is our main goal. We welcome you to establish business relations with us.
Our products feature sturdy modeling and promote effectively all over the world. Built for durability and reliable long-term functionality, they represent fantastic quality. Guided by the principle of Prudence, Efficiency, Union, and Innovation, we make excellent efforts to expand international trade and raise our export scale. We are confident in a bright prospect and global distribution in the years to come.
The Product Description
Product name Hot Dip Galvanized Steel Pipe/Pre-Galvanized Steel Pipe
Wall Thickness 0.6mm--20mm
Length 1--14m According to customer requirements ...
Outer Diameter 1/2’’(21.3mm)---16’’(406.4mm)
Tolerance Tolerance based on Thickness: ±5~±8%
Shape Round
Material Q195---Q345, 10#, 45#, S235JR, GR.B-D, STK500, BS1387......
Surface treatment Galvanized
Zinc coating Pre-galvanized steel pipe: 40--220G/M2 | Hot dip galvanized steel pipe: 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 deposits
Package 1. Through a bundle
2. According to customer’s requirement
Loading port Tianjin/Xingang
Customer Benefits
Direct Factory Source
We are the factory, meaning our pricing holds a clear competitive advantage over trading companies.
Reliable Delivery Schedule
You don't need to worry about delivery dates. We guarantee on-time delivery and strict quality management to ensure absolute customer satisfaction.
Product Detail
Thickness Detail
Thickness
Length Detail
Length
Diameter Detail
Diameter
gi pipe zinc coating
GI Pipe Zinc Coating
HDG pipe Zinc coating
HDG Pipe Zinc Coating
diameter detail
Diameter Detail
Different from Other Factories
Patent Certification
We hold 3 unique product patents covering Groove pipe, Shoulder pipe, and Victaulic pipe designs.
Strategic Port Access
Our manufacturing facility is located just 40 kilometers from Xingang Port (Tianjin), which is the largest port in Northern China.
Advanced Equipment Lines
Our manufacturing infrastructure is equipped with 4 pre-galvanized product lines, 8 ERW steel pipe product lines, and 3 hot-dipped galvanized process lines.
Packing and Transport
Loading and Packing
Transport preparation
Customer Case Study
An Australian customer purchased powder coating pre-galvanized steel square tubes. Upon initially receiving the goods, the customer tested the adhesive strength between the powder and the surface of the square tube, finding it to be insufficient. We immediately set up collaborative discussions to analyze and resolve this concern. Through continuous testing, we refined our methodology: we polished the surfaces of the square tubes and directed them into a specialized heating furnace. After thorough testing and persistent updates with the customer, a highly satisfactory result was reached. Today, the customer continues to purchase a large volume of products from our factory every month.
Customer Photos
Customer Visit 1
Customer Visit 2
Customer Visit 3
The customer purchased steel pipes in our factory. After the goods were produced, the customer came to our factory for inspection.
Frequently Asked Questions (FAQ)
What specifications of hot-dip and pre-galvanized steel pipes do you offer?
We offer steel pipes with wall thicknesses from 0.6mm to 20mm, lengths from 1 to 14 meters (tailored to customer requirements), and outer diameters from 1/2’’ (21.3mm) up to 16’’ (406.4mm). Materials processed include Q195–Q345, S235JR, GR.B-D, STK500, and BS1387.
What is the difference in zinc coatings between pre-galvanized and hot-dip galvanized pipes?
Our pre-galvanized steel pipes have a zinc coating density of 40–220 G/M², whereas our hot-dip galvanized steel pipes offer a thicker coating ranging from 220 to 350 G/M² for increased durability.
How does your factory location benefit shipping and logistics?
Our factory is located just 40 kilometers from Tianjin/Xingang Port, which is the largest port in Northern China. This strategic location enables prompt transport and efficient shipping coordination.
What unique manufacturing capabilities does your factory have?
We utilize 4 pre-galvanized product lines, 8 ERW steel pipe lines, and 3 hot-dipped galvanized process lines. Additionally, we have been granted 3 design patents covering Groove pipe, Shoulder pipe, and Victaulic pipe variants.
What are your payment and delivery terms?
Our standard delivery time is 25 days following the receipt of your deposit. Payment terms require a 30% T/T deposit in advance, with the remaining 70% balance due after receiving the B/L copy, or 100% Irrevocable L/C at sight.
How do you handle specific product design adjustments and quality issues?
We collaborate closely with customers to debug technical challenges. For instance, to solve a powder-adhesion concern for an Australian client, we adjusted our procedures to polish the square tube surfaces and pass them through a specialized heating furnace, successfully meeting the client's specifications.

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