Purchase Qty. Reference FOB Price
100-199 pieces US$1,500.00
200+ pieces US$1,400.00
Product Description
Spiral API 4145h and Alloy Steel Drilling Tool Non-Magnetic Drill Collar Manufacturer The drill collars are made of modified AISI 4145H chromium molybdenum alloy steel. These drill collar bars are full-length heat treated and water quenched to obtain ASTM A-370 mechanical properties. Full ...