- Alternative Energy Generators[1]
- Diesel Generators[5]
- Other Machine Tools Accessories[1]
- Other Material Handling Equipment[1]
- Material Handling Equipment Parts[1]
- Other Metal Processing Machinery[9]
- Metallurgy Machinery Parts[4]
- Drilling Rig[10]
- Other Mining Machinery[6]
- Mining Machinery Parts[10]
- Other Machinery[3]
- Pipe Fittings[4]
- Pumps[1]
- Cast & Forged[5]
- Other Metals & Metal Products[8]
- Stainless Steel Pipes[6]
- Steel Pipes[10]
- Other Wire Mesh[1]
- Other Hand Tools[1]
- Other Tools[1]
- Drill Bit[5]
- Contact Person : Ms. dongying haixin
- Company Name : Dongying Haixin Petroleum Equipment Co., Ltd.
- Tel : 86-546-7755039
- Fax : 86-546-7718801
- Address : Shandong,Dongying,hekou economic development zone
- Country/Region : China
- Zip : 257000
drill collar
DRILL COLLAR API SPEC 7-1:
it's made from rolled or forged AISI4145H chrome-molybdenum steel.
The content of chemical composition and microelement is controlled effectively throughout the whole process. According to its different figures and materials, it can be divides into three types:
Type A (columnar): made from ordinary alloy steel, both inside and outside of the cross section of the pipe are cycloidal.
Type B (spiral): made from ordinary alloy steel, with a spiral chute on the outer surface of the pipe
Type C (non-magnetic): made from stainless alloy-steel of low magnetic permeability, both inside and outside of the cross section of the pipe are rounded.
If you want to communicate for the drill collar,please send enquriy to me or contact me on the trade manager.
My trade manager id is: cn200852287
Thanks and best regards,
Mr Albion
Sales Manager
Dongying Haixin Petroleum Equipment Co.,ltd
drill collar
