China AISI 4145H Heavy Weight Drill Pipe Manufacturer Landee offers AISI 4145H Heavy Weight Drill Pipe, 127 * 9.3mm, NC50 Thread, 25.4mm Wall Thickness.
China AISI 4145H Drill Collar Manufacturer Landee offers AISI 4145H Drill Collar 2, API SPEC 5DP, API SPEC 7-1, 165.1*9.15mm, NC50 Thread, 46.85mm.