Extension rods, there are R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60 threads, and different lengths of rods are available from 600mm to 6400mm usually.

(1)Steel grade: 20CrNi3Mo equivalent to SANDBAR 64

SIZE: hex.22mm .hex.25mm, hex.28mm. hex.32mm hex.35mm

      Dia.32mm. dia.38mm, dia.45mm dia.51 mm

(2) Thread: R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60

(3)Length: 0.4m-10m                                          

(4)Package: in wooden case or in bundles.

(5)Productivity: 20000MT / month