Drill Stem
Xi'an ZZ Top Oil Tools Co.,Ltd is one of the top level drill stem manufacturers and suppliers,Website:, with professional factory, we are able to produce API and oilfield cross over sub, float valve, lifting sub, drill string stabilizer , welcome to contact us.
API Stabilizer/Centralizer in oilfield
Standard: API 7-1
Material: AISI 4145H and Non-magnetic
Type: Drill string stabilizer
Near bit stabilizer
Specification of the oil well drilling stabilizer
Bit size /in
Working OD/mm
End OD of
body /mm
ID /mm
Length /mm
Thread code on both ends
Drill string type
Near bit type
TOP
Down
TOP
Down
6
152.2
121
51
1200
NC38
3 1/2REG
6 1/4
158.7
6 1/2
165.1
7 1/2
190.5
159
57
1600
NC 46
4 1/2 REG
7 7/8
200
8 3/8
212.7
159
165
71
1600
1800
NC 46
NC 50
8 1/2
215.2
159
165
178
8 3/4
222.2
9 1/2
241.3
178
197
1600
NC50
9 5/8
244.5
1800
6 5/8 REG
9 7/8
250.8
12 1/4
311.2
203
209
76
1800
NC56
6 5/8 REG
6 5/8 REG
16
406
229
241.3
2000
2200
NC 61
7 5/8 REG
17 1/2
444.5
24
609.6
26
660.4
28
711.2
Drill pipe
Standard: API 7
Grade: E75, X95, G105, S135
Coating: TK34, TC2000, TC3000
Hard banding: ARNCO 100 XT, ARNCO 300XT
Length: R1/R2/R3
Drill collar:
Standard: API 7
Material: AISI 4145H and Non. Magnetic
OD: 3 1/8”- 11”
Length: 10’ - 31’
Crossover Sub/X-over Sub
Standard: API 7
Material: AISI 4145, AISI4140, AISI4130
Connection: IF, REG, EUE, CAS, ACME,NPT
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