We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.
High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.
Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
The many years of experience that we have means that there is always someone who has the ability to carry a project forward.
Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
Galvanized tube is a carbon steel tube protected by a zinc coating to improve corrosion resistance and service life. Due to its durability, affordability, and ease of installation,Galvanized tubing is widely used in construction, water supply systems, fencing, scaffolding, agricultural projects, and structural applications.
The zinc coating acts as a protective barrier, helping prevent rust formation and reducing maintenance requirements in outdoor and humid environments.
The following table summarizes the common technical specifications of galvanized steel tubes:
|
Item |
Specification Range |
Description |
|
Outer Diameter |
15mm – 219mm |
Common sizes for structural and fluid applications |
|
Wall Thickness |
0.8mm – 6.0mm |
Selected according to load and pressure requirements |
|
Length |
5.8m, 6m, 12m or customized |
Standard export and project lengths |
|
Zinc Coating |
40gsm – 600gsm |
Higher coating weight provides better corrosion protection |
|
Steel Grade |
Q195, Q235, Q345 or equivalent |
Common carbon steel materials |
|
Standard |
ASTM A53, BS 1387, EN 10255 |
International manufacturing standards |
|
Surface Finish |
Hot-Dip Galvanized / Pre-Galvanized |
Bright, smooth, or spangled finish |
Excellent Corrosion Resistance
The zinc coating protects the steel substrate from moisture and atmospheric corrosion, makingGalvanizedtubes suitable for outdoor installations and harsh environments.
Long Service Life
Compared with black steel pipes, galvanized tubes typically offer a significantly longer service life, helping reduce replacement and maintenance costs.
Good Mechanical Strength
Manufactured from carbon steel grades such as Q195, Q235, and Q345,Galvanizedtubes provide reliable structural strength for both load-bearing and fluid transportation applications.
Cost-Effective Solution
Galvanizedtubes deliver an excellent balance between performance and affordability, making them a popular choice for infrastructure and industrial projects.
Galvanized steel tubes are widely used in:
Water supply and drainage systems
Construction scaffolding
Structural frameworks
Greenhouse structures
Fencing and guardrails
Fire protection systems
Agricultural irrigation projects
Mechanical and industrial fabrication
The versatility ofGalvanizedtubing allows it to be used in both structural and fluid-handling applications.
When selecting galvanized steel tubes, buyers should consider:
1. Zinc Coating Thickness
For coastal, humid, or industrial environments, higher zinc coating weights such as 275gsm, 350gsm, or above are recommended for improved corrosion protection.
2. Tube Size and Wall Thickness
The required outside diameter and wall thickness should be selected according to structural loads, operating pressure, and project specifications.
3. Compliance Standards
Verify that the product complies with recognized standards such as ASTM A53, BS 1387, or EN 10255 to ensure quality and dimensional consistency.
4. Surface Type
Pre-Galvanized Tube: Economical and suitable for general applications.
Hot-Dip Galvanized Tube: Provides thicker zinc coating and superior corrosion resistance.
1. What is the difference between hot-dip galvanized and pre-galvanized tubes?
Hot-dip galvanized tubes receive a thicker zinc coating after fabrication, providing better corrosion resistance than pre-galvanized tubes.
2. What are the common sizes of Galvanized tubes?
Common outer diameters range from 15mm to 219mm, with wall thicknesses typically between 0.8mm and 6.0mm.
3. Which standards are used for Galvanized tubes?
The most common standards include ASTM A53, BS 1387, and EN 10255.
4. Are Galvanized tubes suitable for outdoor applications?
Yes. The zinc coating provides effective corrosion protection, makingGalvanizedtubes ideal for outdoor and exposed environments.
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