Price comparison of seamless and welded pipes

Seamless vs welded pipe

1. Production process

Seamless steel pipes are made by directly heating steel billets to a certain temperature and processing them through perforation, plugging, hot rolling and other processes, while welded pipes are processed into pipes by connecting steel plates through a welding process. Different production processes have different impacts on costs. The production process of seamless steel pipes is precise and the cost is high, so the price is relatively expensive; while the production process of welded steel pipes is relatively simple and the price is relatively affordable.

2. Quality requirements

Seamless steel pipes have relatively high quality requirements and must have no internal defects, smooth appearance, and no burrs. However, due to limitations in production methods, it is difficult to avoid defects such as cracks and pores in the welded parts of welded steel pipes. High-quality seamless steel pipes require higher raw material and precision processing costs, and the price is correspondingly higher.

3. Service life

Seamless steel pipes have higher strength indicators such as compression resistance and tensile strength than welded steel pipes, and have a longer service life.

4. Market demand

Seamless steel pipes are widely used in petroleum, chemical industry, machinery, rail transportation and other fields. Due to specific uses and quantity requirements, the price of seamless steel pipes is relatively high. Affected by market competition and market demand, the price of welded steel pipes is relatively low.

Overall, seamless steel pipes are more expensive than welded steel pipes. Due to the higher production technology and quality requirements of seamless steel pipes, market demand is also more specialized. But this does not mean that welded steel pipe is cheaper in all cases and needs to be considered on a case-by-case basis.

In summary:

This article analyzes the price difference between seamless steel pipes and welded steel pipes from four aspects: production process, quality requirements, service life and market demand, hoping to provide some inspiration to readers. When purchasing steel pipes, you need to make a selection based on specific circumstances. Not only price factors must be considered, but also applicability, quality, use and many other aspects.