| Customization: | Available |
|---|---|
| After-sales Service: | on Site |
| Manufacturing Process: | Forging |
|
Still deciding? Get samples of $ !
Order Sample
|
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Heat Treatment of Puyang Zhongshi drill collar adopts unique medium frequency inductance heating method for hardening and tempering,during which steel parts rotate continuously to get even heating.In the course of hardening,it adopts anular internal and external injection water cooling method to get even and high strength.Drilling collar material after whole length heat treatment could guarantee 285-341 Brinell hardness 1" below the surface of the pipe body.
Puyang Zhongshi drill collar includes open faced,spiral groove,square,lopsided and pipe slips,elevator groove,wearing ring drill collar.The length of the drill collar could be 10 feet to 30 feet with 3-1/20'' to 11" external diameter.
Data information of common size
|
Size |
Weight |
Falt-end weight |
Grade |
Wall thickness |
Upset types |
|||
|
Inch |
mm |
Lb/ft |
Kg/m |
Inch |
mm |
|||
|
2 3/8 |
60.3 |
6.65 |
6.26 |
9.32 |
E.X.G.S |
0.280 |
7.11 |
EU |
|
2 7/8 |
73.0 |
10.40 |
9.72 |
14.48 |
E.X.G.S |
0.362 |
9.19 |
IU,EU |
|
3 1/2 |
88.9 |
9.50 |
8.81 |
13.12 |
E |
0.254 |
6.45 |
IU,EU |
|
3 1/2 |
88.9 |
13.30 |
12.31 |
18.34 |
E.X.G.S |
0.368 |
9.35 |
IU,EU |
|
3 1/2 |
88.9 |
15.50 |
14.63 |
21.79 |
E |
0.449 |
11.40 |
IU,EU |
|
3 1/2 |
88.9 |
15.50 |
14.63 |
21.79 |
X.G.S |
0.449 |
11.40 |
EU,IEU |
|
4 |
101.6 |
14.00 |
12.93 |
19.26 |
E.X.G.S |
0.330 |
8.38 |
IU,EU |
|
4 1/2 |
114.3 |
13.75 |
12.24 |
18.23 |
E |
0.271 |
6.88 |
IU,EU |
|
4 1/2 |
114.3 |
16.00 |
14.98 |
22.31 |
E.X.G.S |
0.337 |
8.56 |
EU,IEU |
|
4 1/2 |
114.3 |
20.00 |
18.69 |
27.84 |
E.X.G.S |
0.430 |
10.92 |
EU,IEU |
|
5 |
127.0 |
16.25 |
14.87 |
22.15 |
X.G.S |
0.296 |
7.52 |
EU |
|
5 |
127.0 |
19.50 |
17.93 |
26.71 |
E |
0.362 |
9.19 |
IEU |
|
5 |
127.0 |
19.50 |
17.93 |
26.71 |
X.G.S |
0.362 |
9.19 |
EU,IEU |
|
5 |
127.0 |
25.60 |
24.03 |
35.79 |
E |
0.500 |
12.70 |
IEU |
|
5 |
127.0 |
25.60 |
24.03 |
35.79 |
X,G,S |
0.500 |
12.70 |
EU,IEU |
){kind=link}