Pipe Flange- Carbon Steel Flange, ANSI B16.5, ASME B16.47, Industry Standard Flange

Several common forms of flange sealing surface

The commonly used sealing surface forms of medium and low pressure flanges are flat, concave-convex surface and tongue and groove surface. 1. Flat flange The sealing surface of this kind of flange is a smooth plane, and sometimes there are two concentric circular grooves (commonly known as water lines) with a triangular interface on the sealing surface. As shown in Figure 3-1(a). Sealing surface ...

 YANHAO  2021-10-08  Flange knowledge  55

Flange type introduction

There are many types of flanges, which is a bit confusing. Today we will introduce the types of flanges so that everyone can know more about the types of flanges. Classified by material: 20# A105 Q235A 12CrMoV16MnR 15CrMo 18-8 321304 304L 316 316L etc. According to the sealing surface form: Flat surface (FF), raised surface (RF), convex surface (M), concave surface (F), Concave-convex surface (MF)...

 YANHAO  2021-10-08  Flange knowledge  30

What types of flanges are there?

How many types of flanges are there? How are they classified? What are the manifestations of flanges? Types of flanges1. According to the classification of national standard flanges: integral flanges, threaded flanges, butt welding flanges, flat welding flanges with necks, socket welding flanges with necks, butt welding ring loose flanges with necks, plate flat flanges Welding flanges, butt-weld...

 YANHAO  2021-10-08  Flange knowledge  6

Flange structure diagram

Flanges are commonly used parts in pipelines. Everyone has seen them, but they do not necessarily understand the structure of the flange. Here we look at the structure diagram of the flange to let everyone know about the structure of the flange. Among them: K refers to the diameter of the center circle of the bolt hole, usually we call the center distance; L refers to the bolt diameter; D refers ...

 YANHAO  2021-10-09  Flange knowledge  22