How to choose seamless steel pipe and welded steel pipe?

How to choose seamless steel pipe and welded steel pipe?

When you need a batch of pipes, you will certainly consider whether to purchase seamless steel pipes or welded steel pipes. So how to choose seamless steel pipe and welded steel pipe?

The choice of seamless steel pipe and welded steel pipe depends on a variety of factors, such as application, cost and use environment and other factors. Here are the key factors and recommendations to consider when choosing between the two.

1. Application scenario

Seamless steel pipe:

High temperature, high pressure environment: seamless pipe has no weld, and the shape and strength are more uniform, its compressive strength and high temperature resistance is better than welded steel pipe, often used as high pressure boiler pipeline, hydraulic pipeline and oil and gas transmission.
Special structural components: In the field of high mechanical properties, such as ships, aviation, automotive drive shafts, etc., seamless steel pipes are the preferred target.
Small-caliber scenario: Because the production process and production cost of large-caliber seamless pipes are too large, seamless pipes are generally used in areas that require small-caliber pipes.

Welded steel pipe:

Low pressure or normal temperature environment: Welded steel pipe is suitable for conveying water, gas or other low pressure fluids, widely used in water pipes, sewage pipes and agricultural irrigation.
Architectural and structural uses: in construction scaffolding, steel structure support, bridge railings and other fields.
Large-caliber scenario: In large-caliber pipelines, the production process and production cost of welded steel pipes are more suitable.

2. Cost factor
Seamless steel pipe: The manufacturing process is complex. The cost is higher. Especially in the field of small caliber and high performance pipes.
Welded steel pipe: The manufacturing cost is relatively low, especially in the scenario of large caliber and ordinary performance requirements, it has a significant cost-effective advantage.

3.Service life and reliability
Seamless steel pipe: Because it has no weld, long service life, especially in high pressure, high temperature and corrosive environment, strong reliability.
Welded steel pipe: Welded steel pipe has obvious welds, if the welding process is improper, the weld may become a weak point of corrosion or fracture.