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114mm PWL High Strength 30CrMnSia Drill Pipe Wireline Drill Rod CE ISO 9001
BQ NQ HQ PQ Wireline Drilling Rods With Heat Treatment 30 CrMnSiA
Tensile Stainless Steel Split Tube For Wireline Core Barrel , NQ3 HQ3 PQ3
Heat - treatment Thread Process Wireline Core Drilling Rod 10ft 5ft BWL NWL HWL
Wireline Heat Treatment HWT / Q Series Geological Core Drilling Rod And Casing
Wireline WL threads Core Drilling Rod BWL NWL HWL PWL For Mining Exploration
Drill Pipe Casing For Mining , Flush-jointed Water Well Casings 4" - 8 "
High Performance Alloy Steel Casing Pipe For Mining , Wireline Drill Rods
Drill Pipe Casing / Alloy Steel Wireline Casing Tube For Geology Exploration
Drill Pipe Casing Of Diamond Drill Tools NQ HQ PQ Wireline Drill Outer Tube
Drill Pipe Casing For Mining
Drill Pipe Casing Of Diamond Drill Tools