ring knife
ring knife, Total:4 items.
The international standard classification for "ring knife" includes: Drills, countersinks, reamers .
The Chinese standard classification for "ring knife" includes: Hydrology and water conservancy instrument .
Professional Standard - Hydroelectric Power
- SD 191-1986 Circular soil cutter
Professional Standard - Construction Industry
- JG/T 557-2018 Triple tube rigid type rotary corer
Professional Standard - Water Conservancy
- SL 110-1995 Calibrating Methods of Soil Testing Instrument
- SL 370-2006 Instrument for soil test-annular sword
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