Drill bits are designed for percussive-rotary drilling of wells
of various purposes in rocks and ores with coefficient of strength f=6...5 MPa.
f=6...20 on Professor Protodyakonov's scale (GOST 21153.1-76) and may be used
for carrying out drilling works by the open method on drilling machines at pressure of compressed air 2,0...2,5 MPa.
أخبرنا بما تحتاجه واحصل على عروض أسعار من موردين موثوقين