Drill Stem

Product Detail

Xi'an ZZ Top Oil Tools Co.,Ltd is one of the top level drill stem manufacturers and suppliers, 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