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Flange bolting plays a critical role in ensuring the integrity of piping systems. Improper installation is the most common cause of leaking joints, which can lead to costly downtime, safety risks, and operational inefficiencies. At Sunjin Metals Vina (SJM Vina), we provide Korean-origin steel pipes, flanges, and fittings for industrial projects, and we emphasize that proper flange bolting procedures must always be followed. Below is a comprehensive guide to the correct procedure for flange bolting.
In industrial piping systems, international standards ensure consistency, safety, and compatibility for flange connections. One of the most widely adopted European flange standards is EN 1092. This standard defines the dimensions, tolerances, pressure ratings, and surface finishes for various flange types used in industrial pipelines across the European Union (EU) and beyond.
This article provides a comprehensive explanation of the EN 1092 flange standard, the types of flanges it encompasses, and its significance in today’s engineering and manufacturing industries.
Sunjin Metals Vina (SJM Vina), is a trusted supplier of high-quality steel pipes, flanges, and fittings sourced from South Korea and other countries, fully compliant with international standards.
In piping systems and industrial connections, selecting the appropriate flange type is critical to ensure leak-proof, pressure-resistant, and structurally sound joints. One of the key considerations in flange selection is the flange facing type. The two most common facing types are Raised Face (RF) and Flat Face (FF) flanges.
Understanding the differences between Raised Face and Flat Face flanges is essential for engineers, procurement teams, and maintenance professionals. This article provides a detailed explanation of the characteristics of each flange face type, their advantages, applications, and how to choose the right one for your project.
Sunjin Metals Vina (SJM Vina), is a trusted supplier of high-quality steel pipes, flanges, and fittings sourced from South Korea and other countries, fully compliant with international standards.



