1)Main specification:
| Casing coupling |
4-1/2"
|
STC
|
127.00*158.75
|
5.23
|
4-1/2"
|
LTC
|
127.00*177.80
|
4.15
| |
4-1/2"
|
BTC
|
127.00*225.42
|
4.55
| |
5"
|
STC
|
141.30*165.10
|
4.66
| |
5"
|
LTC
|
141.30*196.85
|
5.75
| |
5"
|
BTC
|
141.30*231.78
|
5.85
| |
5-1/2"
|
STC
|
153.67*172.45
|
5.23
| |
5-1/2"
|
LTC
|
153.67*203.20
|
6.42
| |
5-1/2"
|
STC
|
153.67*234.95
|
6.36
| |
6-5/8"
|
STC
|
187.71*184.15
|
9.12
| |
6-5/8"
|
LTC
|
187.71*222.25
|
11.34
| |
6-5/8"
|
STC
|
187.71*244.48
|
11.01
| |
7"
|
STC
|
194.46*187.15
|
8.39
| |
7"
|
LTC
|
194.46*228.60
|
10.83
| |
7"
|
STC
|
194.46*254.00
|
10.54
| |
7-5/8"
|
STC
|
215.90*190.50
|
12.3
| |
7-5/8"
|
LTC
|
215.90*234.95
|
15.63
| |
7-5/8"
|
STC
|
215.90*263.52
|
15.82
| |
8-5/8"
|
STC
|
244.48*196.85
|
16.23
| |
8-5/8"
|
LTC
|
244.48*254.00
|
21.67
| |
8-5/8"
|
STC
|
244.48*269.88
|
20.86
| |
9-5/8"
|
STC
|
269.88*196.85
|
18.63
| |
9-5/8"
|
LTC
|
269.88*266.70
|
25.45
| |
9-5/8"
|
STC
|
269.88*269.88
|
23.16
| |
10-3/4"
|
STC
|
298.45*203.20
|
20.78
| |
10-3/4"
|
STC
|
298.45*269.88
|
25.74
| |
11-3/4"
|
STC
|
323.85*203.20
|
22.64
| |
11-3/4"
|
BTC
|
323.85*269.88
|
28.03
| |
13-3/8"
|
STC
|
365.12*203.20
|
25.66
| |
1
3-3/8"
|
BTC
|
365.12*269.88
|
31.77
|
2)New Products: sucker rod coupling with big chamfer,Both-way Globoidal Protection sucker rod coupling
3)Material: seamless alloy steel AISI 5140
4)SM coupling coating material : Ni60A Alloy.
5)Basic Hardness: HRC 16-23
6)Surface Hardness: HRC 55-62
7)Hole rate: 2%
8)Min. Hardness of the layer: 595HV0.2
9)Standard: API Spec 11B
10)Coupling diameter: 5/8",3/4",7/8",1",1-1/8"
11)Package: wooden case
3)Material: seamless alloy steel AISI 5140
4)SM coupling coating material : Ni60A Alloy.
5)Basic Hardness: HRC 16-23
6)Surface Hardness: HRC 55-62
7)Hole rate: 2%
8)Min. Hardness of the layer: 595HV0.2
9)Standard: API Spec 11B
10)Coupling diameter: 5/8",3/4",7/8",1",1-1/8"
11)Package: wooden case
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