This pre-gi zinc coated steel pipe is directly produced and processed from galvanized strip steel. It can be seen from the production process of pre-gi zinc-coated steel pipe that its welding beams and cutting end destroy the zinc layer due to welding and cutting, and it is easy to rust in the later stage, so rust prevention treatment is required.
The specific process flow is: uncoiling - leveling - slitting - welding - online zinc replenishment - heat treatment - sizing and straightening - eddy current testing - cutting - air drying - packaging. The welding seam is treated with online zinc repair, and the cutting end is sprayed with self-painting (self-spraying zinc) to prevent rust.
- Clean, smooth finish.
- Good welding performance.
- Good corrosion resistance, durable.
- High strength and high-temperature oxidation.
- Surface appearance and the use of the possibility of diversification.
Widely used in low-medium pressure fluid, coal gas transportation, heating steam, project construction, oil and nature gas pressure steel pipe, steel structure.
Why Choose Us:
1. Strict control
We will strictly control raw materials and production processes to ensure that products meet the standards.
2. Rapid production
We have advanced production equipment and abundant production and operation to deliver goods as quickly as possible.
3. Rapid delivery
The factory is close to the port and supports rail and air transportation.
4. Enthusiastic service, first-class after-sales system
We all have 24-hour online answers when you have any questions.
We have many years of foreign trade experience, such as exporting to Korea, Pakistan, Brazil, Russia, India, Vietnam, and other countries.