Galvanized pipes are an excellent choice for a wide range of applications because of their durability, resistance to corrosion, and affordability. However, selecting the right galvanized pipe sizes for your project is crucial to ensure optimal performance and safety. This article explores the different galvanized pipe sizes available, their applications, and key considerations to keep in mind when choosing the right size for your project.

Introduction

Galvanized pipes are a popular choice for a variety of applications because of their strength, durability, and resistance to corrosion. Whether you are building a new structure or repairing an existing one, selecting the right galvanized pipe sizes is critical to ensure the success of your project. In this article, we will discuss the different galvanized pipe sizes available, their applications, and key factors to consider when choosing the right size for your project.

Galvanized Pipe Sizes

Galvanized pipe sizes are available in a wide range of diameters and lengths to suit different applications. The most common pipe sizes range from 1/2 inch to 6 inches in diameter, with lengths ranging from 10 feet to 24 feet.

Applications of Galvanized Pipe Sizes

Galvanized pipes are suitable for a wide range of applications, including plumbing, gas lines, fencing, and structural support. In plumbing, galvanize pipes are famous for water supply lines and drainage systems. For gas lines, galvanized pipes are the preferred choice because they are resistant to corrosion and can withstand high pressure. In fencing, galvanized pipes play important role in creating sturdy and durable frames for chain-link fences. In structural support, galvanize pipes are famous for providing strength and stability to buildings and other structures.

Considerations for Choosing Galvanized Pipe Sizes

When choosing the right galvanized pipe sizes for your project, it is important to consider several key factors. Firstly, you should consider the flow rate and pressure requirements of your application. This will help you determine the appropriate diameter and wall thickness of the pipe. Secondly, you should consider the length of the pipe required. As this will affect the cost and logistics of the project. Finally, you should consider the environment in which the pipe will use. Including factors such as temperature, humidity, and exposure to corrosive substances.

Conclusion

Galvanized pipes are a versatile and cost-effective solution for a variety of applications. By selecting the right galvanized pipe sizes for your project, you can ensure optimal performance, durability, and safety. Whether you are working on a plumbing system, gas line, fence, or structural support. It is important to consider factors such as flow rate, pressure, length, and the environment when choosing the appropriate galvanized pipe sizes. With the right approach, galvanized pipes can help you create reliable and long-lasting structures that meet your specific needs.

2026 Update: Galvanized Pipe Sizes & Prices

Standard galvanized pipe sizes (NPS) remain unchanged: 1/2″ through 12″ with wall thicknesses per Schedule 10-80. The most commonly ordered sizes in 6-meter lengths and their outside diameters are:

• 1/2 inch — 21.3 mm OD
• 3/4 inch — 26.7 mm OD
• 1 inch — 33.4 mm OD
• 1-1/4 inch — 42.2 mm OD
• 1-1/2 inch — 48.3 mm OD
• 2 inch — 60.3 mm OD
• 3 inch — 88.9 mm OD
• 4 inch — 114.3 mm OD

As of August 2026, hot-dip galvanized pipe (EN ISO 1461, 55+ microns) is priced at approximately USD 750-950 per ton FOB China, while pre-galvanized runs about 5-10% lower. For coastal or humid environments, HDG is strongly recommended — it provides 15-25 years of service versus 5-10 years for pre-galvanized coating.

Square Steel Pipe Manufacturer

Looking for a factory? See our square steel pipe manufacturer & supplier page with SHS/RHS specs.

Galvanized Pipe Size Quick Reference

Nominal Size	OD (mm)	Sch 40 Wall (mm)	Common Length
1/2″	21.3	2.77	6m / 12ft
3/4″	26.7	2.87	6m / 12ft
1″	33.4	3.38	6m / 12ft
1-1/4″	42.2	3.56	6m / 12ft
1-1/2″	48.3	3.68	6m / 12ft
2″	60.3	3.91	6m / 12ft / 20ft
3″	88.9	5.49	6m / 20ft
4″	114.3	6.02	6m / 20ft

Standards: ASTM A53, BS 1387, GB/T 3091. Ends: plain or NPT threaded. Coating: hot-dip galvanized, 200-600 g/m².

B2B Ordering FAQ — Galvanized Pipe Sizes

Q1: What sizes do galvanized pipes come in?
A: We supply galvanized steel pipe from 1/2″ (21.3mm) to 8″ (219.1mm) nominal OD, with Schedule 40 and Schedule 80 wall options and NPT threaded or plain ends.

Q2: What is the MOQ for galvanized pipes?
A: Our standard MOQ is 5 tons per specification. Mixed sizes in one container are accepted.

Q3: What is the delivery time?
A: Stock sizes ship within 7-10 days after deposit; mill-rolled orders take 15-25 days depending on specification.

Q4: Which standards can you certify?
A: We supply to ASTM A53, BS 1387, GB/T 3091 and EN 10219 with MTC 3.1 certificates; SGS/BV inspection on request.

Q5: What is the indicative price?
A: Galvanized steel pipe is priced at approximately $550-750/MT FOB Tianjin depending on size, wall thickness and zinc coating.