1. Different production processes

Galvanized welded steel pipes are made by first removing rust from black steel pipes in polypropylene paint removal and rust removal solutions, then washing, pickling, oxide coating, washing, drying, fumigation and other processes, and finally in a molten zinc tank Dip in to form a galvanized layer. Galvanized seamless steel pipes are first made into seamless steel pipes, and then dip-coated with a layer of zinc liquid on the outer surface to form a zinc layer. Therefore, there are obvious differences in the production processes between the two.

2. Different performance

Relatively speaking, galvanized welded steel pipes have better strength, toughness and corrosion resistance, and are generally used in construction, bridges and other fields. Galvanized seamless steel pipes have no welding seams, and seamless steel pipes have relatively high strength and are used for transporting high-pressure fluids, gas, etc.

3. Different uses

Based on the different production processes and performance, the uses of the two are also different. Galvanized welded steel pipes are mainly used in buildings, bridges, roads and other occasions, such as stair handrails, bridge guardrails, highway guardrails, commuter railway guardrails, airport guardrails and parking lots, etc. for safety protection in hot-dip galvanized pipes; galvanized seamless steel pipes It is mainly used in petroleum, chemical industry, shipbuilding and other fields, such as oil pipelines, gas pipelines, heating pipelines, etc.

In summary, there are obvious differences between galvanized welded steel pipes and galvanized seamless steel pipes. Readers should make a choice based on their actual needs when choosing to use them.