JIS corrosion-resistant flanges are high-performance flanges designed and manufactured in accordance with Japanese Industrial Standards (JIS). They play an important role in numerous industrial fields requiring high corrosion resistance.

1. Materials and Corrosion Resistance Principles

Material Characteristics

JIS corrosion-resistant flanges are typically made of specialized corrosion-resistant materials, such as stainless steel (e.g., 304, 316) or nickel-based alloys. For example, 316 stainless steel contains molybdenum, which makes it highly resistant to chloride ion corrosion. Nickel-based alloys offer a broader range of corrosion resistance, capable of withstanding a variety of corrosive media, including strong acids and alkalis.

Corrosion Resistance Principles

These specialized materials form a dense oxide film on their surface. For example, the chromium oxide film on stainless steel prevents further reaction between corrosive media and the flange base, thereby protecting the flange's structural integrity and extending its service life.

2. Product Specifications and Connection Methods

Specifications and Standards

Following JIS standards, these products adhere to strict specifications regarding dimensions, thickness, and screw hole layout. This ensures excellent interchangeability between JIS corrosion-resistant flanges produced by different manufacturers, facilitating equipment assembly and maintenance.

Connection Methods

It can be connected using a variety of methods, including bolting. The flange's connection surfaces are precisely machined to ensure a tight connection. During installation, when used with appropriate sealing gaskets, it effectively prevents the leakage of corrosive media and ensures the safe operation of the piping system.

3. Application Areas

In the chemical industry, JIS corrosion-resistant flanges are used in piping systems that transport various corrosive chemical raw materials. In marine engineering, JIS corrosion-resistant flanges reliably connect various equipment and pipelines in the face of seawater corrosion. In the food and pharmaceutical industries, they meet the dual requirements of hygiene and corrosion resistance, ensuring product quality and safety.