无磁钻铤
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无磁钻铤
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无磁钻铤
无磁钻铤采用自主研发的低碳不锈钢，执行API规范及SY/T5144标准，可对螺纹进行冷滚压处理，可加工双台肩螺纹及其它规格的特殊螺纹。
● 尺寸规格
|
钻艇编号Sel. |
外径OD |
内径ID |
长度mm Length |
台肩倒角 直径Df mm |
弯曲强度比 Bendingstrength ration |
||
|
mm |
in |
mm |
in |
||||
|
NC23-31 |
79.4 |
31/8 |
31.8 |
11/4 |
9150 |
76.2 |
2.57:1 |
|
NC26-35 |
88.9 |
31/2 |
38.1 |
11/2 |
9150 |
82.9 |
2.42:1 |
|
NC31-41 |
104.8 |
41/8 |
50.8 |
2 |
9150或9450 |
100.4 |
2.43:1 |
|
NC35-47 |
120.7 |
43/4 |
50.8 |
2 |
9150或9450 |
114.7 |
2.58:1 |
|
NC38-50 |
127.0 |
5 |
57.2 |
21/4 |
9150或9450 |
121.0 |
2.38:1 |
|
NC44-60 |
152.4 |
6 |
57.2 |
21/4 |
9150或9450 |
144.5 |
2.49:1 |
|
NC44-60 |
152.4 |
6 |
71.4 |
213/16 |
9150或9450 |
144.5 |
2.84:1 |
|
NC44-62 |
158.8 |
61/4 |
57.2 |
21/4 |
9150或9450 |
149.2 |
2.91:1 |
|
NC46-62 |
158.8 |
61/4 |
71.4 |
213/16 |
9150或9450 |
150.0 |
2.63:1 |
|
NC46-65 |
165.1 |
61/2 |
57.2 |
21/4 |
9150或9450 |
154.8 |
2.76:1 |
|
NC46-65 |
165.1 |
61/2 |
71.4 |
213/16 |
9150或9450 |
154.8 |
3.05:1 |
|
NC46-67 |
171.4 |
63/4 |
57.2 |
21/4 |
9150或9450 |
159.5 |
3.18:1 |
|
NC50-67 |
171.4 |
63/4 |
71.4 |
213/16 |
9150或9450 |
159.5 |
2.37:1 |
|
NC50-70 |
177.8 |
7 |
57.2 |
21/4 |
9150或9450 |
164.7 |
2.54:1 |
|
NC50-70 |
177.8 |
7 |
71.4 |
213/16 |
9150或9450 |
164.7 |
2.73:1 |
|
NC50-72 |
184.2 |
71/4 |
71.4 |
213/16 |
9150或9450 |
169.5 |
3.12:1 |
|
NC56-77 |
196.8 |
73/4 |
71.4 |
213/16 |
9150或9450 |
185.3 |
2.70:1 |
|
NC56-80 |
203.2 |
8 |
71.4 |
213/16 |
9150或9450 |
190.1 |
3.02:1 |
|
65/8REG |
208.6 |
81/4 |
71.4 |
213/16 |
9150或9450 |
195.7 |
2.93:1 |
|
NC61-90 |
228.6 |
9 |
71.4 |
213/16 |
9150或9450 |
212.7 |
3.17:1 |
|
75/8REG |
241.3 |
91/2 |
76.2 |
3 |
9150或9450 |
223.8 |
2.81:1 |
|
NC70-97 |
247.6 |
93/4 |
76.2 |
3 |
9150或9450 |
232.6 |
2.57:1 |
|
NC70-100 |
254.0 |
10 |
76.2 |
3 |
9150或9450 |
237.3 |
2.81:1 |
|
85/8REG |
279.4 |
11 |
76.2 |
3 |
9150或9450 |
266.7 |
2.84:1 |
● 主要公差尺寸
|
外径范围OD |
外径OD |
内径ID |
长度 Length |
台肩倒角直径DF Bendingstrengthratio |
|
|
mm |
in |
||||
|
≤88.9 |
≤31/2 |
+1.20 |
+1.60 |
+152.4 |
±0.4 |
|
>88.9∽114.3 |
>31/2∽41/2 |
+1.60 |
|||
|
>114.3∽139.7 |
>41/2∽51/2 |
+2.00 |
|||
|
>139.7∽165.1 |
>51/2∽61/2 |
+3.20 |
|||
|
>165.1∽215.9 |
>61/2∽81/2 |
+4.00 |
|||
|
>215.9∽241.3 |
>81/2∽91/2 |
+4.80 |
|||
|
>241.3 |
>91/2 |
+6.40 |
|||
● 力学性能
|
外径范围OD |
屈服强度 Yieldstrength |
抗拉强度 Tensilestrength |
伸长率 Elongation |
收缩率Shrinkage |
硬度Hardnes |
夏比冲击功 Impact Akv |
|||
|
mm |
in |
Ksi |
Mpa |
Ksi |
Mpa |
% |
% |
HB |
J |
|
≤180 |
≤7 |
≥120 |
≥828 |
≥135 |
≥931 |
≥25 |
≥50 |
285-360 |
≥75 |
|
>180 |
>7 |
≥110 |
≥759 |
≥130 |
≥897 |
≥25 |
≥50 |
285-360 |
≥75 |
磁性能
(磁场=1×105/4π A/m)
1.相对磁导率μr<1.010
2.磁场梯度：ΔB≤0.05μT
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