Galvanized Mild Steel Pipes are low-carbon steel pipes coated with a zinc layer through hot-dip or electro-galvanizing processes, offering excellent corrosion resistance and durability. Compliant with ASTM A53 and A123 standards, these pipes are ideal for water supply systems, construction frameworks, and agricultural irrigation, providing a minimum tensile strength of 330 MPa and a zinc coating thickness of at least 1.2 oz/ft² (366 g/m²).

The galvanizing process involves cleaning, pickling, and immersing the mild steel pipes in molten zinc at approximately 450°C (842°F) for hot-dip galvanizing, or applying zinc via electroplating for electro-galvanized pipes, creating a protective layer against rust. Available in sizes from DN15 (1/2”) to DN200 (8”) with wall thicknesses from SCH 40 to SCH 80, and lengths from 5.8 to 12 meters, Galvanized Mild Steel Pipes meet diverse project needs. Surface treatments like passivation enhance longevity, and plain or threaded ends facilitate easy installation.

These pipes undergo rigorous testing, including tensile, hydrostatic, and coating thickness tests, to ensure compliance with ASTM standards. The zinc coating acts as a sacrificial anode, protecting the mild steel even if scratched, making Corrosion-Resistant Mild Steel Pipes suitable for humid and industrial environments. Their strength supports high-pressure applications in gas pipelines and industrial piping.

Compared to stainless steel or pre-galvanized pipes, Galvanized Mild Steel Pipes offer a cost-effective solution with good corrosion resistance, though they may require maintenance in highly corrosive environments. Their versatility and lifespan (up to 40 years) make them a preferred choice for fencing, railings, and structural applications.

Galvanized Mild Steel Pipes address challenges like pipeline corrosion, environmental exposure, and cost constraints, delivering reliable, long-lasting solutions for industrial and residential applications.

Mild Steel Pipe Galvanized

Mild Steel Pipe Galvanized is a tubular-shaped pipe of galvanized Mild Steel. Galvanized pipes are commonly used in plumbing and fencing since they provide reliable performance and longevity.

Hot-dip galvanizing is the process of coating iron or steel with a thin zinc layer, by passing the steel through a molten bath of zinc at a temperature of around 860 °F (460 °C). When exposed to the atmosphere, pure zinc reacts with oxygen to form zinc oxide. This further reacts with carbon dioxide to form zinc carbonate, a dull grey, fairly strong material that stops further corrosion in many circumstances, protecting the steel below from the elements. Galvanized steel is widely used in applications where rust resistance is needed, and can be identified by the crystallization patterning on the surface (often called a “spangle”).

Stock Description and Weight Specifications
Stock Description	Weight (KG/M)
21.40 x 2.0mm	0.957
25.00 x 2.0mm	1.154
26.99 x 2.0mm	1.233
31.75 x 2.0mm	1.467
34.10 x 2.0mm	1.583
38.10 x 2.0mm	1.780
42.86 x 2.0mm	2.015
48.50 x 2.0mm	2.293
50.80 x 2.0mm	2.407
60.33 x 2.0mm	2.877
76.20 x 2.0mm	3.660
101.60 x 2.0mm	4.912

Properties of Galvanized Mild Steel Pipe

The properties of galvanized steel are a unique combination that make it ideal for use in interior and exterior applications such as car bodies, appliances, nuts and bolts, roofs, and rebar.

Corrosion Resistance
Surface Appearance
Formability
Durability
Recyclable

Galvanized Mild Steel Pipe Standard Specifications

Chemical Composition of Galvanized Mild Steel Pipe
Grade	C (% max)	Mn (% max)	P (% max)	S (% max)	Cu (% max)
Grade A	0.25	0.95	0.05	0.045	0.40
Grade B	0.30	1.20	0.05	0.045	0.40

The zinc coating (80-100 microns) enhances the corrosion resistance of Galvanized Mild Steel Pipe , protecting the carbon steel base in harsh environments. The chemical composition ensures weldability and durability for

Mechanical Properties of Galvanized Mild Steel Pipe
Grade	Tensile Strength (min, MPa)	Yield Strength (min, MPa)	Elongation (min, %)
Grade A	330	205	28
Grade B	415	240	30

These properties ensure Galvanized Mild Steel Pipe eliver robust performance in structural and high-pressure applications.

Comparison of Hot-Dip Galvanized Pipes with Other Pipes
Feature	Hot-Dip Galvanized Pipe	Pre-Galvanized Pipe	Stainless Steel Pipe
Coating	Zinc (80-100 microns)	Zinc (thinner, coil-coated)	None (inherent corrosion resistance)
Corrosion Resistance	Excellent (sacrificial anode)	Moderate (weaker at welds)	Superior (no coating needed)
Cost	Cost-effective	Lower initial cost	Higher cost
Lifespan	Up to 50 years	20-30 years	50+ years
Applications	Water, gas, construction	Light structural, fencing	Chemical, marine, hygienic

Hot-Dip Galvanized Pipes offer distinct advantages over pre-galvanized and stainless steel pipes.

Chemical Composition of Stainless Hollow Sections (Grades 304, 304L, 316, 316L per ASTM A554/A312)
Grade	C (% max)	Mn (% max)	Si (% max)	P (% max)	S (% max)	Cr (%)	Ni (%)	Mo (%)	N (% max)
304	0.08	2.00	1.00	0.045	0.030	18.0-20.0	8.0-11.0	-	0.10
304L	0.03	2.00	1.00	0.045	0.030	18.0-20.0	8.0-12.0	-	0.10
316	0.08	2.00	1.00	0.045	0.030	16.0-18.0	10.0-14.0	2.0-3.0	0.10
316L	0.03	2.00	1.00	0.045	0.030	16.0-18.0	10.0-14.0	2.0-3.0	0.10

The low carbon content in 304L and 316L enhances weldability, while molybdenum in 316 and 316L improves resistance to pitting and crevice corrosion, making Galvanized Mild Steel Pipe ideal for harsh environments.

Mechanical Properties of Stainless Hollow Sections (Grades 304, 304L, 316, 316L per ASTM A554/A312)
Grade	Tensile Strength (min, MPa)	Yield Strength (min, MPa)	Elongation (min, %)	Hardness (max, HB)	Hardness (max, HRB)
304	515	205	40	201	92
304L	485	170	40	201	92
316	515	205	40	217	95
316L	485	170	40	217	95

These mechanical properties make Galvanized Mild Steel Pipe suitable for applications requiring high strength and corrosion resistance, such as architectural structures, marine environments, and chemical processing.