| 型号： | - |
|---|---|
| 品牌： | 维高钻具 |
| 原产地： | 中国 |
| 类别： | 工业设备 / 矿业设备 |
| 标签︰ | 石油钻具 , 无磁 , 钻铤 |
| 单价： |
-
|
| 最少订量： | 1 件 |
| 最后上线︰2019/03/09 |
无磁钻铤的尺寸规格
|
钻铤编号 |
外径D |
内径d |
长度L mm |
台肩倒角 直径DF mm |
弯曲强度比 |
||
|
mm |
in |
mm |
in |
||||
|
NC23-31 |
79.4 |
3 1/8 |
31.8 |
1 1/4 |
9150 |
76.2 |
2.57：1 |
|
NC26-35 |
88.9 |
3 1/2 |
38.1 |
1 1/2 |
9150 |
82.9 |
2.42：1 |
|
NC31-41 |
104.8 |
4 1/8 |
50.8 |
2 |
9150或9450 |
100.4 |
2.43：1 |
|
NC35-47 |
120.7 |
4 3/4 |
50.8 |
2 |
9150或9450 |
114.7 |
2.58：1 |
|
NC38-50 |
127.0 |
5 |
57.2 |
2 1/4 |
9150或9450 |
121．0 |
2.38：1 |
|
NC44-60 |
152.4 |
6 |
57.2 |
2 1/4 |
9150或9450 |
144.5 |
2.49:1 |
|
NC44-60 |
152.4 |
6 |
71.4 |
2 13/16 |
9150或9450 |
144.5 |
2.84:1 |
|
NC44-62 |
158.8 |
6 1/4 |
57.2 |
2 1/4 |
9150或9450 |
149.2 |
2.91:1 |
|
NC46-62 |
158.8 |
6 1/4 |
71.4 |
2 13/16 |
9150或9450 |
150.0 |
2.63:1 |
|
NC46-65 |
165.1 |
6 1/2 |
57.2 |
2 1/4 |
9150或9450 |
154.8 |
2.76:1 |
|
NC46-65 |
165.1 |
6 1/2 |
71.4 |
2 13/16 |
9150或9450 |
154.8 |
3.05:1 |
|
NC46-67 |
171.4 |
6 3/4 |
57.2 |
2 1/4 |
9150或9450 |
159.5 |
3.18:1 |
|
NC50-67 |
171.4 |
6 3/4 |
71.4 |
2 13/16 |
9150或9450 |
159.5 |
2.37:1 |
|
NC50-70 |
177.8 |
7 |
57.2 |
2 1/4 |
9150或9450 |
164.7 |
2.54:1 |
|
NC50-70 |
177.8 |
7 |
71.4 |
2 13/16 |
9150或9450 |
164.7 |
2.73:1 |
|
NC50-72 |
184.2 |
7 1/4 |
71.4 |
2 13/16 |
9150或9450 |
169.5 |
3.12:1 |
|
NC56-77 |
196.8 |
7 3/4 |
71.4 |
2 13/16 |
9150或9450 |
185.3 |
2.70:1 |
|
NC56-80 |
203.2 |
8 |
71.4 |
2 13/16 |
9150或9450 |
190.1 |
3.02:1 |
|
6 5/8REG |
209.6 |
8 1/4 |
71.4 |
2 13/16 |
9150或9450 |
195.7 |
2.93:1 |
|
NC61-90 |
228.6 |
9 |
71.4 |
2 13/16 |
9150或9450 |
212.7 |
3.17:1 |
|
7 5/8REG |
241.3 |
9 1/2 |
76.2 |
3 |
9150或9450 |
223.8 |
2.81:1 |
|
NC70-97 |
247.6 |
9 3/4 |
76.2 |
3 |
9150或9450 |
232.6 |
2.57:1 |
|
NC70-100 |
254.0 |
10 |
76.2 |
3 |
9150或9450 |
237.3 |
281:1 |
|
8 5/8REG |
279.4 |
11 |
76.2 |
3 |
9150或9450 |
266.7 |
2.84:1 |
无磁钻铤的主要公差尺寸
|
外径范围 |
外径D |
内径d |
长度L |
台肩倒角直径DF |
|
|
|
mm |
in |
|||||
|
≤88.9 |
≤3 1/2 |
+1.2 0 |
+1.6 0 |
＋152.4 |
±0.4 |
|
|
＞88.9~114.3 |
＞3 1/2~4 1/2 |
+1.6 0 |
||||
|
＞114.3~139.7 |
＞4 1/2~5 1/2 |
+2.0 0 |
||||
|
＞139.7~165.1 |
＞5 1/2~6 1/2 |
+3.2 0 |
||||
|
＞165.1~215.9 |
＞6 1/2~8 1/2 |
+4.0 0 |
||||
|
＞215.9~241.3 |
＞8 1/2~9 1/2 |
+4.8 0 |
||||
|
＞241.3 |
＞9 1/2 |
+6.4 0 |
||||
无磁钻铤的力学性能
|
外径范围 |
屈服强度 σ0.2 MPa |
抗拉强度 σb MPa |
伸长率 δ4 % |
|
|
|
mm |
in |
||||
|
79.4~171.4 |
3 1/8~6 3/4 |
≥758 |
≥827 |
≥18 |
|
|
177.8~279.4 |
7~11 |
≥689 |
≥758 |
≥20 |
|
磁性能（磁场＝1×105/4πA/m）
1. 相对磁导率Ur＜1.010
2. 磁场梯度：ΔB≤0.05μT
