Collar
- AISI 4145H alloy steel
- Froged or Rolled
- Length: 10-42 feet
- OD: from 3-1/8" to 11"
- Whole length heat treatment
- Brinell hardness 285-341
- Every single collar tested (100% higher than API rate)
- API SPEC 7-1
- Cold forming of the thread
- Non-magnetic collar (material YDWC 20-14) available



BLUCKEE | 2020