News about Gaskets, Bolt & Nuts

Functions, Advantages and Selection of Stainless Steel Flanges

A flange is a mechanical connecting piece that plays a crucial role in the industrial field. The following are the main functions of flanges. Connection function: Flanges are usually used in pairs, with two flange discs tightly fixed together through bolts and nuts, thus achieving connections between pipelines and valves, between pipelines, and between pipelines and equipment. This connection method is not only stable and reliable but also adaptable to various complex working conditions and medium...

Jan 20, 2026

Technical Manual for Correct Installation of Flange Gaskets

Technical Manual for Correct Installation of Flange Gaskets: Practical Key Points from Selection to Leak Detection The correct installation of flange gaskets is crucial for ensuring tight sealing and reliable operation of pipeline systems. Improper installation may lead to equipment failure, safety hazards, and costly downtime losses. This guide provides a detailed step-by-step installation process for flange gaskets and offers recommendations for selecting gasket types based on different application...

Jan 10, 2026

The Selection of Flange Bolts and Nuts

The selection of flange connection bolts and nuts should take into account factors such as pipeline operating pressure, operating temperature, medium type, and gasket type. For example, in the flange connection of low-pressure highly toxic medium pipelines sealed with spiral wound gaskets, although the operating pressure and temperature of the pipeline are not high, the high specific pressure required to form the initial seal of the spiral wound gasket requires the fasteners to bear a large load....

Dec 20, 2025

Standards, Specs, Common Problems and Solutions of Flange Gaskets

Standards, Specifications, Common Problems, Solutions, and Industry Application Characteristics of Flange Gaskets Domestic standard GB/T 9126-2020 "Non metallic Flat Gaskets for Pipe Flanges"; GB/T 13403-2013 "Gaskets for Large Diameter Carbon Steel Pipe Flanges"; HG/T 20610-2009 (Ministry of Chemical Industry Standard), SH/T 3407-2018 (Petroleum Standard).  There is a certain difference in flange gasket size between the American standard (ASME B16.20) and the national standard...

Dec 10, 2025

How to Use Flange Gaskets Correctly?

Flange Gaskets Are Divided into Front and Back Sides. Do you use them correctly? The gasket, as a component between the connecting piece and the nut, is usually a flat metal or non-metal ring. When used in conjunction with nuts, the selection of the front and back sides of  gaskets is crucial. If installed improperly, it may lead to poor sealing effect and even cause leakage accidents. When installing flat washers with nuts, everyone may encounter installation problems on both sides to some...

Nov 20, 2025

Material Selection and Installation Guide of Flange Gaskets

Full Analysis of Flange Gaskets: Material Selection and Installation Guide Graphite composite gaskets have become key components for industrial connections due to their excellent sealing performance under high temperature and high pressure. Selection should take into account the characteristics of the medium and installation and maintenance, while intelligent and environmentally friendly innovation will lead the industry in the future. 1. Basic knowledge and application of gaskets Basic concept...

Nov 11, 2025

Tightening Methods of Flange Bolts and Nuts

Tightening Methods of Flange Bolts and Nuts The flange bolts and nuts is one type of fastener mainly composed of a hexagonal head and a flange plate (the gasket under the hexagon is fixed together with the hexagon), and a screw (a cylindrical body with external threads). It needs to be matched with a nut to fasten and connect two parts through holes. Flange bolts and nuts are widely used in highway and railway bridges, including industrial and civil construction, cranes, excavators and other...

Oct 20, 2025

Unique Design and Applications of Flange Bolts and Nuts

Unique Design and Application of Flange Bolts and Nuts Basic structure and characteristics of flange bolts and nuts The flange bolts and nuts are ingeniously designed, consisting of a hexagonal head, flange plate, and threaded rod. The hexagonal head is convenient for installation and disassembly, and the flange is its key. The flange increases the contact area between the bolt and the connected part, which can more evenly distribute stress and reduce the probability of damage. Moreover, the pattern...

Oct 10, 2025

The Innovative Direction of Sealing Flange Gaskets

In the context of industrial production, process pipelines run through various links like human blood vessels, shouldering the key mission of transporting various media such as liquids, gases, and slurries. However, the characteristics of the medium transported by process pipelines vary greatly in different industries and production scenarios from high-temperature and high-pressure crude oil and corrosive acid-base solutions in the petrochemical industry, to clean water and sterile drugs in the...

Sep 30, 2025

Policies Related To Marine Flange Gaskets

Policies Related To Marine Flange Gaskets Environmental compliance and performance upgrades are equally important: The new regulations for marine flange gaskets require the prohibition of asbestos, priority for recyclable materials, and strict pressure and fire testing to promote the industry's transition to green standardization. Cost changes bring new considerations for procurement strategies. As a key sealing component in ship pipeline systems, the performance of flange gaskets directly affects...

Sep 10, 2025

Function, Classification, and Selection of Flange Gaskets

In high-pressure and impurity environments, flange gaskets ensure sealing and maintain stable liquid gas transmission through filling space and tight fitting design. Non-metallic, semi-metallic, and metallic gaskets are suitable for different working conditions, and ASME standards accurately regulate materials and processes. From low-pressure full plane to high-temperature ring connection surfaces, the soft and hard materials are precisely interlocked under bolt pressure, achieving the ultimate...

Aug 18, 2025

Detailed Steps and Notes for Replacing Flange Gaskets

Detailed Steps And Notes for Replacing Flange Gaskets 1. Preliminary preparations Before starting to replace the flange gasket, we need to ensure that we have made sufficient preparations. Before replacing the flange gasket, wear appropriate labor protection equipment such as gloves, goggles, etc. to ensure safety and protection during the operation. These preparations include understanding relevant safety regulations, preparing necessary tools and equipment, and ensuring the safety and cleanliness...

Aug 08, 2025