* How do I choose between single/double layers?

Single-layer nozzles are usually used for cutting aluminum plate,copper plate with nitrogen air as auxiliary gas;

Double-layer nozzles are usually used for oxidative cutting, cutting carbon steel with oxygen as auxiliary gas.

Diameter 28mm

Of course, single-layer nozzles with a diameter of 28mm also have chrome plated ones

Qingdao Qingtai Intelligent Technology Co.,Ltd (Qingdao Tiannuo Mechanical and Electrical Co.,Ltd) is a high-tech enterprise which has a innovative and professional technical team in the fiber laser and textile machinery field, our members have decades of work experience and a wealth of experience of on-site troubleshooting and short maintenance cycle. In addition, Qingtai laser has set up a research center, which makes us a supplier who integrates the development R&D, production and service of materials, device integration and laser source related products such as optical fiber.

The company's main business includes textile machinery parts, fiber laser consumables, laser research and development solutions and customized high-quality products for customers. In addition, QTC laser established a long-term stable cooperative relations with customers, our products are best-selling in consumer market, in addition, relying on the principle of powerful strength, efficient service, high quality products, a variety of operating characteristics and meager profit but high turnover, we have won the trust of customers, highly recognized by customers.
 

We continually optimize the service management, pay attention to build enterprise culture, improving the professional quality of our employees.
QTC always adhere to the establishment of a learning team, and has been working hard on it, rich industry experience makes QTC won universal praise among the vast customers community.