#self-drillingUnmoderated tagAll postsTrending CommunitiesSteemitCryptoAcademyNewcomers' Communityআমার বাংলা ব্লগKorea • 한국 • KR • KOSteem POD TeamSTEEM CN/中文Steem AllianceAVLE 일상WORLD OF XPILARBeauty of CreativityUkraine on SteemTron Fan ClubExplore Communities...#self-drillingTrendingHotNewPayoutsMutedsinorock (30)in #soil • 3 years agoNew Trend! Self-Drilling Soil Nails Support Unstable Conditions!The foundation pit support technology is a hot spot and a difficulty in the current engineering circles. Soil nail…sinorock (30)in #self-drilling • 3 years agoCharacteristics and Thread Processing Method of Hollow Bar of Self-drilling Rock BoltThe self-drilling anchor bolt system is composed of a hollow anchor bar, coupler, nut, drill bit, plate, and…