... cold working pressure NACE MR 01 75 HAMMER UNION The Hammer Union can be used for cementing trucks, ... of pipeline thread, tubing thread, butt-weld.The Hammer Union type mainly consists of Figure 100, Figure ... Figure 1003,Figure 1502 and Figure 2002.FIGURE 2002 HAMMER UNIONNominal pipe Size: 2”, 3”;Pressure Rating: ... ;Butt-weld configurations only Weco Wing Unions - Figure 2002 ( Hammer Union FIG 2002 ...