Stainless steel plate flat welding flange (PL) is a type of connector where a pipe is inserted into the inner ring of the flange and welded. 

It has a simple structure and is easy to manufacture. 

Made of stainless steel (such as 304, 316, 316L), 

it possesses excellent corrosion resistance and aesthetic appeal, and is widely used in the petroleum, chemical, water treatment, and food industries.

Working Principle

The connection process of a Stainless Steel (PL)Plate Flange mainly consists of the following steps:

Installation: Place the stainless steel flange onto the end of the steel pipe.

Positioning: Adjust the flange position to maintain a certain gap between the pipe end and the flange sealing surface.

Internal and External Welding: Perform fillet welds on the inner and outer sides of the flange to fuse the flange and pipeline together.

Tightening: Tighten the two plate flanges (and the gasket in between) with bolts to achieve a seal.

Product Advantages

High Cost-Effectiveness: 

Simple structure, low material consumption, more economical than neck flanges, making it the first choice for medium and low pressure pipelines.

Easy Installation: 

Less demanding on pipe cutting dimensions, relatively easy alignment.

Excellent Corrosion Resistance: 

High-quality stainless steel ensures rust-free operation in humid or acidic/alkaline environments, resulting in a long service life.

Aesthetically Pleasing: Stainless steel (PL)plate flange typically have a polished or sandblasted surface, giving them a high-end look.