375 compressor
The use of wood mold or lost foam requires the mold to be consistent with the real thing, the appearance is smooth, and the yield and surface finish of the casting are improved, so as to reduce flash, burr and cold separation.
Safety in Drilling Operations
Conclusion
Conclusion
Understanding Submarine Hammer Drilling
4, the selection of rolling drag plate, the track is not easy to wear.
4, the selection of rolling drag plate, the track is not easy to wear.