Min. Order Reference FOB Price
1 Piece US$1,500.00 / Piece
Product Description
Drill Collars Technical Features: The Drill Collars are made of AISI 4145 H or 4145 H Modified alloy steel. Bores are trepanned from one direction with no mismatch. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface of the ...