Soil Sea is the Supplier of ASME and API Welding Neck Flange, Slip On Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange and Blind Flanges.


What is Flange?

A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification.
Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.

Types of Flanges

The most used flange types in Petro and chemical industry are:
1. Welding Neck Flange
2. Slip On Flange
3. Socket Weld Flange
4. Lap Joint Flange
5. Threaded Flange
6. Blind Flange

Special Flanges

Except the most used standard flanges, there are still a number of special flanges such as:
1. Orifice Flanges
2. Long Welding Neck Flanges
3. Weldoflange / Nipoflange
4. Expander Flange
5. Reducing Flange

Dimensions of Flanges

Each flange ASME B16.5 has a number of standard dimensions.
If a draftsman in Japan or a work preparer in Canada or a pipefitter in Australia is speaking about a Welding Neck flange NPS 6, Class 150, Schedule 40 ASME B16.5, then it goes over the flange which in the image here below is shown.
If the flange is ordered, the supplier want to know the material quality.
For example ASTM A105 is a forged carbon steel flange, while A182 is a forged stainless steel flange.