Construction

S32750, a duplex stainless steel variety, is used in heat exchangers and cold showers and devices that are resistant to seawater, high temperature and concentrated nitric acid in oil refining, fertilizer, papermaking, petroleum, chemical and other industries.

The specification covers grades of stainless steel tubing for general corrosion-resisting and low or high-temperature service.

A335 P91 alloy steel pipe is a high-performance, high-temperature and corrosion-resistant alloy steel pipe, which is widely used in petroleum, chemical industry, electric power and other fields.

High-frequency high-frequency welded spiral finned tube is one of the most widely used spiral finned tubes, now widely used in power, metallurgy, cement industry waste heat recovery and petrochemical industry.