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Lifting sub
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Lifting sub
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Lifting sub
Lifting sub is made of AISI4145H Cr-Mo steel in accordance with API Specifications. Threads can be processed with cold rolling, coppering or phosphating.
● Mechanical properties
|
Outer diameter of external thread joint D/mm(in) |
Mpa Tensile strength |
σr 0.2/Mpa Yield strength |
% Elongation |
Charpy (type V) impact force Impact |
HB Hardness (Brinell) |
|
79.4-159.5(31/8-63/4) |
≥970 |
≥760 |
≥13 |
≥54 |
≥285 |
|
177.8-260.7(7-11) |
≥930 |
≥690 |
≥13 |
≥54 |
≥277 |
● Main dimensions of lifting sub
|
SN |
Nominal dimensions Basic size D±0.08(1/32) mm(in) |
d/mm |
Pin connection |
Lifting end |
|||||
|
Type |
D ±0.08(1/32) mm(in) |
D./mm |
LPB/mm |
DB ±0.08mm |
Elevator shoulder root Radius of rounded corner RSE±0.04mm |
Length of action of tongs LB/mm |
|||
|
1 |
73.0(27/8) |
31.8 |
NC23 |
79.4(31/8) |
76.2 |
250.0 |
111.1 |
4.8 |
100.0 |
|
2 |
44.5 |
NC26 (23/8)※ |
88.9(31/2) |
82.9 |
|||||
|
3 |
88.9(31/2) |
54.0 |
NC31(21/8)※ |
104.8(41/8) |
100.4 |
127.0 |
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|
4 |
50.8 |
NC35 |
120.7(43/4) |
114.7 |
|||||
|
5 |
68.3 |
NC38(31/21F)※ |
127.0(5) |
121.0 |
|||||
|
6 |
127.0(5) |
71.4 |
NC44 |
152.4(6) |
144.5 |
168.3 |
6.4 |
||
|
7 |
158.8(61/4) |
149.2 |
|||||||
|
8 |
82.6
95.3 |
NC46(41F) |
158.8(61/4) |
150.0 |
|||||
|
9 |
165.1(61/2) |
154.8 |
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|
10 |
171.5(63/4) |
159.5 |
|||||||
|
11 |
NC50(41/21F) |
177.8(7) |
164.7 |
||||||
|
12 |
184.2(71/4) |
169.5 |
|||||||
|
13 |
NC56 |
196.8(73/4) |
185.3 |
300.0 |
|||||
|
14 |
203.2(8) |
190.1 |
|||||||
|
15 |
65/8REG※ |
209.6(81/4) |
195.7 |
||||||
|
16 |
NC61 |
228.6(9) |
212.7 |
||||||
|
17 |
75/8REG※ |
241.3(91/2) |
223.8 |
||||||
|
18 |
NC70 |
247.7(93/4) |
232.6 |
||||||
|
19 |
254.0(10) |
237.3 |
|||||||
|
20 |
NC77 |
279.4(11) |
260.7 |
||||||
Note: common thread joint.
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