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|30CrMnSi / ASTM4130
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|Alloy Steel Pipe
H/WL Wireline Drill Pipe Drill Rod , Alloy steel 30CrMnSi / ASTM4130 Alloy Welded Steel Pipe for Wireline Coring
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|H/Wl HQ Wireline Drill Rod Drill Pipe For Exploration Drilling
|30CrMnSiA / ASTM4130