Supply metal collars for drilling shafts will API certificate.
Standard Drill Collar Features &
• API pin stress relief groove and box boreback
An API pin stress relief can be used on all drill collars and downhole tools. It
is a recommended option in situations where fatigue can occur as a result of
bending. By removing any unengaged threads in the high stress areas of the
drill collar connection, it is less likely to crack due to fatigue because the bending will take place in the area of the connection with smooth surfaces that are free of stress concentrations.
• Internal bore treatment
This option generates a compression level of at least 60, 000 PSI at a given
depth. This provides the collar with an excellent resistance to stress corrosion
The company is the first to get the ISO9001-2000 quality management system certificate and has also attained the certification of CCS, GL and KR.The products have been exported to korea, Japan and Euramerican countries and also sold to domestic large-scale enterprises, which have a good reputation among the customers.
Contact Name: Mr. Jacky Kon
Company Name: LinSteel Group Co., Ltd.
Street Address: Linsteel New District,
Linfen City, Shansxi Province, 286000, China
Member name: paotian
Member Since: 11 October 2009
Total Leads: 1784 paotian Import Export Business Leads
Business focus: Galvanized Steel Coil, Pre-painted Steel Coil, Cold Rolled Steel Coil, Gi Coil, Hot Dipped Galvanized Steel Coil, Color Coated Steel Coil
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Product Category: Drill collars