8 Years
BQ NQ HQ PQ Hardened Drill Rod For Geotechnical Atlas Standard, Specifications Drilling Rods Size O.D I.D mm mm AQ 44.7 37.3 BQ 55.7 46.1 NQ 70 60.2 HQ 89 78 PQ 114.5 101.5 S75 71 61 AW 43.7 30.7 BW ...
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