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By certification 
Features:
● All kinds of oil pipe thread inserts, drill pipe inserts, such as API standard round buckle, offset ladder buckle inserts, special buckle inserts.
● All kinds of thread turning tools and thread milling tools.
● Various CNC grooving and cutting inserts, non-standard custom grooving inserts.
● We also produce and manufacture blades with matching toolholders, and can customize toolholders for customers.
● Professional quality inspection team, to ensure that each piece of factory products through strict inspection
● Equipped with high precision professional production equipment.
● Professional R&D team
● Non-standard custom-made various molding tools.
Odering Code |
Teeth/Inch |
Taper |
Thread Form |
H |
L |
Grade |
16ER8APⅠ |
8 |
1:16 |
API round tubing cashing thread |
15.2 |
1.4 |
0124、0326 |
16ER10APⅠ |
10 |
1:16 |
API round tubing cashing thread |
15.2 |
1.2 |
0124、0326 |
Odering Code |
Teeth/Inch |
Taper |
Thread Form |
H |
L |
Grade |
16NR8APⅠ |
8 |
1:16 |
API round tubing cashing thread |
15.2 |
1.4 |
0124、0326 |
16NR10APⅠ |
10 |
1:16 |
API round tubing cashing thread |
15.2 |
1.2 |
0124、0326 |
http://www.ctri-eng.com/
