... Water, fracturing fluid and mixed fluid .The Hammer Union type mainly consists of Figure 100, Figure 200, ... seal; Butt-weld available. 5, Figure 600 Hammer Union Nominal pipe Size:1, 2, 3, 4; Pressure ... tubing thread, butt-weld; 8, Figure 1003 Hammer Union Nominal pipe Size:2, 3, 4,5; Pressure ... and choke and kill lines. 10, Figure 2002 Hammer Union Nominal pipe Size:2, 3; Pressure Rating: 20000psi ...