API Standard Cross Head for F‑Series Mud Pump Oilfield Drilling Spare Parts Specifications: 1) materials ASTM A48-83 meehanite cast iron 2) guides are renewable 3) concentricity can be adjusted by adding shims Features of crosshead: 1) The crosshead and crosshead guide are made of ASTM A48-83 meehanite cast iron featured by good abrasion resistance and long service life. 2) The cross head guide are renewable. 3) Upper and lower guides are used for F-800 and F-1000 mud pumps,