Wholesale Sale Drill Collar
Standard:API SPEC 7-1
Steel grade:AISI 4145H
Sizes:3 1/8" -- 11"
Connected Type:NC, IF, REG
Classification :
PRODUCT DETAILS
Description
API SPEC 7-1 drill collar is made with rolling or forging AISI4145H chromium molybdenum alloy steel. Therefore, it needs to control chemical composition and the content of trace elements effectively.
Specification&Standard
|
Standard |
Number |
OD |
ID |
Length |
Weight |
Typical Bending |
|
SY5144-2007/API7-1 |
NC 23-31 |
3-1/8 |
1-1/4 |
30 |
22 |
2.57:1 |
|
NC 26-35 (2-3/8 IF) |
3-1/2 |
1-1/2 |
30 |
27 |
2.42:1 |
|
|
NC 31-41 (2-7/8 IF) |
4-1/8 |
2 |
30 or 31 |
34 |
2.43:1 |
|
|
NC 35-47 |
4-3 /4 |
2 |
30 or 31 |
47 |
2.58:1 |
|
|
NC 38-50 (3-1/2 IF) |
5 |
2-1/4 |
30 or 31 |
54 |
2.38:1 |
|
|
NC 44-60 |
6 |
2-1/4 |
30 or 31 |
83 |
2.49:1 |
|
|
NC 44-60 |
6 |
2-13 /16 |
30 or 31 |
76 |
2.84:1 |
|
|
NC 44-62 |
6-1/4 |
2-1/4 |
30 or 31 |
91 |
2.91:1 |
|
|
NC 46-62 (4 IF) |
6-1/4 |
2-13 /16 |
30 or 31 |
84 |
2.63:1 |
|
|
NC 46-65 (4 IF) |
6-1/2 |
2-1/4 |
30 or 31 |
100 |
2.76:1 |
|
|
NC 46-65 (4 IF) |
6-1/2 |
2-13 /16 |
30 or 31 |
93 |
3.05:1 |
|
|
NC 46-67 (4 IF) |
6-3 /4 |
2-1/4 |
30 or 31 |
109 |
3.18:1 |
|
|
NC 50-70 (4-1/2 IF) |
7 |
2-1/4 |
30 or 31 |
118 |
2.54:1 |
|
|
NC 50-70 (4-1/2 IF) |
7 |
2-13 /16 |
30 or 31 |
111 |
2.73:1 |
|
|
NC 50-72 (4-1/2 IF) |
7-1/4 |
2-13 /16 |
30 or 31 |
120 |
3.12:1 |
|
|
NC 56-77 |
7-3 /4 |
2-13 /16 |
30 or 31 |
140 |
2.70:1 |
|
|
NC 56-80 |
8 |
2-13 /16 |
30 or 31 |
151 |
3.02:1 |
|
|
6-5/8 API Reg |
8-1/4 |
2-13 /16 |
30 or 31 |
162 |
2.93:1 |
|
|
NC 61-90 |
9 |
2-13 /16 |
30 or 31 |
196 |
3.17:1 |
|
|
7-5/8 API Reg |
9-1/2 |
3 |
30 or 31 |
217 |
2.81:1 |
|
|
NC 70-97 |
9-3 /4 |
3 |
30 or 31 |
230 |
2.57:1 |
|
|
NC 70-100 |
10 |
3 |
30 or 31 |
243 |
2.81:1 |
|
|
8-5/8 API Reg |
11 |
3 |
30 or 31 |
300 |
2.84:1 |
|
Sreel Mark |
Chemical Composition % |
||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Al |
|
|
4145H |
0.42~0.48 |
0.15~0.35 |
0.90~1.20 |
≤0.03 |
≤0.03 |
0.90~1.20 |
0.15~0.25 |
≤0.2 |
0.025~0.045 |
|
Other Elements:N≤0.015,Ni≤0.5 |
|||||||||
|
Drill Collar Mechanical Performance |
||||||||
|
Drill Collar Outside Diameter Range |
Yield Strength |
Tensile Strength |
Elongation |
|
Charpy Impact |
|||
|
mm |
in |
MPa |
Psi |
MPa |
Psi |
|||
|
79.4~171.4 |
3-1/8~6-3/4 |
≥758 |
≥110000 |
≥965 |
≥140000 |
≥13 |
285~341 |
≥54 |
|
177.8~279.4 |
7~11 |
≥689 |
≥100000 |
≥930 |
≥135000 |
≥13 |
285~341 |
≥54 |
|
Under special conditions, the impact work of the charpy can be determined as greater than 70J according to the supply and demand |
||||||||
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