Factory Making Gasoline Engine Water Pump - Drill Collar-Slick and Spiral Downhole Pipe – VS
Factory Making Gasoline Engine Water Pump - Drill Collar-Slick and Spiral Downhole Pipe – VS Detail:
The drill collar is made from AISI 4145H or finish rolling structural alloy steel, processed as per API SPEC 7 standard.
In the entire producing process of drill collar, the test data of each item’s performance test, from workblank, heat treatment to connecting thread and other manufacturing process, are traceable.
Drill collars’ detection is completely as per API standard.
All the threads undergo phosphatization or copper plating treatment so as to increase their corrosion resistance and avoid tool threads’ thread gluing phenomenon.
Our company can process slips and elevator grooves on the drill collar as per user’s requirements.
Technical Parameters:
Drill collar thread model |
O.D. |
I.D. |
Length mm |
||
mm |
in |
mm |
in |
||
NC23-31 |
79.4 |
3-1/8 |
31.8 |
1-1/4 |
9150 |
NC26-35 |
88.9 |
3-1/2 |
38.1 |
1 1/2 |
9150 |
NC31-41(2-7/8IF) |
104.8 |
4-1/8 |
50.8 |
2 |
9150 |
NC35-47 |
120.7 |
4-3/4 |
50.8 |
2 |
9150 |
NC38-50(3-1/2IF) |
127.0 |
5 |
57.2 |
2-1/4 |
9150 |
NC44-60 |
152.4 |
6 |
57.2 |
2-1/4 |
9150/9450 |
NC44-60 |
152.4 |
6 |
71.4 |
2-13/16 |
9150/9450 |
NC44-62 |
158.8 |
6-1/4 |
57.2 |
2-1/4 |
9150/9450 |
NC46-62(4IF) |
158.8 |
6-1/4 |
71.4 |
2-13/16 |
9150/9450 |
NC46-65(4IF) |
165.1 |
6-1/2 |
57.2 |
2-1/4 |
9150/9450 |
NC46-65(4IF) |
165.1 |
6-1/2 |
71.4 |
2-13/16 |
9150/9450 |
NC46-67(4IF) |
171.4 |
6-3/4 |
57.2 |
2-1/4 |
9150/9450 |
NC50-67(4-1/2IF) |
171.4 |
6-3/4 |
71.4 |
2-13/16 |
9150/9450 |
NC50-70(4-1/2IF) |
177.8 |
7 |
57.2 |
2-1/4 |
9150/9450 |
NC50-70(4-1/2IF) |
177.8 |
7 |
71.4 |
2-13/16 |
9150/9450 |
NC50-72(4-1/2IF) |
184.2 |
7-1/4 |
71.4 |
2-13/16 |
9150/9450 |
NC56-77 |
196.8 |
7-3/4 |
71.4 |
2-13/16 |
9150/9450 |
NC56-80 |
203.2 |
8 |
71.4 |
2-13/16 |
9150/9450 |
6-5/8REG |
209.6 |
8-1/4 |
71.4 |
2-13/16 |
9150/9450 |
NC61-90 |
228.6 |
9 |
71.4 |
2-13/16 |
9150/9450 |
7-5/8REG |
241.3 |
9-1/2 |
76.2 |
3 |
9150/9450 |
NC70-97 |
247.6 |
9-3/4 |
76.2 |
3 |
9150/9450 |
NC70-100 |
254.0 |
10 |
76.2 |
3 |
9150/9450 |
8-5/8REG |
279.4 |
11 |
76.2 |
3 |
9140/9450 |
Product detail pictures:

Related Product Guide:
We not only will try our greatest to offer superb companies to just about every buyer, but also are ready to receive any suggestion offered by our shoppers for Factory Making Gasoline Engine Water Pump - Drill Collar-Slick and Spiral Downhole Pipe – VS , The product will supply to all over the world, such as: Norway, Puerto Rico, Ireland, We confirm to public, cooperation, win-win situation as our principle, adhere to the philosophy of make a living by quality, keep developing by honesty , sincerely hope to build up a good relationship with more and more customers and friends, to achieve a win-win situation and common prosperity.

Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!
