Union
Structure: 
Metal union is made of high quality steel and finishing exercise,  nylon union is made of nylon material.  
Application: 
Union for cement trucks, the fracturing car, all kinds of manifolds and other high-voltage equipment and pipelines, is an important component transport oil, water, fracturing fluid and mixed fluid. 
Characteristics:
Has good mechanical properties and sealing performance, especially with operations in harsh environments, disassembly fast, convenient and flexible. 
Nylon union has a lighter, more resistant, more resistant to corrosion.

PneumaticType Union
Structure:

Steel shell and Pneumatic Type.

Application:

Pneumatic tire union can be widely used in low pressure, large diameter and misplacement, and frequent mounting and dismantling , particularly in the connection between the mud tanks of solid control system in the petroleum sector.

Product Structure: steel, pneumatic tires. 

Characteristics:

Site dislocation large pneumatic tire union will not affect pipeline connections and seals to meet the special requirements of rapid field installation and removal, and for workers to reduce manual labor, shorten construction cycle, has very important significance.