钻铤
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钻铤
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钻铤
钻铤采用AISI4145H铬钼钢制造，执行API规范及SY/T5144标准,可对螺纹进行冷滚压、镀铜或磷化处理，可加工双台肩螺纹及其它规格的特殊螺纹,可生产外径最大14英寸的钻铤。
● 标准尺寸、内径及螺纹
|
钻铤编号 Connection# |
外径OD |
内径ID |
长度mm Length |
台肩倒角直径D, mm |
弯曲强度比 Bending strength ratio |
||
|
mm |
in |
mm |
in |
||||
|
NC23-31 |
794 |
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 |
吊卡槽和卡瓦槽
根据用户需要，可在钻铤上加工满足API规范要求的吊卡槽、卡瓦槽结构。
钻铤吊卡槽、卡瓦槽尺寸
|
钻铤外径 OD |
吊卡槽深度 LE±0.2 |
R1C |
角度 αb |
卡挖槽深度 LS±0.4 |
角度 βb |
|
101.6-117.5 |
5.6 |
3.2+0.4 |
4° |
4.8 |
3.5° |
|
120.6-142.9 |
6.4 |
3.2+0.4 |
5° |
4.8 |
3.5° |
|
146.0-168.3 |
7.9 |
3.2+0.4 |
6° |
6.4 |
5° |
|
171.4-219.1 |
9.5 |
4.8+0.8 |
7.5° |
6.4 |
5° |
|
≥222.2 |
11.1 |
6.4+0.8 |
9° |
6.4 |
5° |
钻铤的力学性能
|
外径范围OD |
屈服强度 σ0.2 Mpa |
就控强度 σb Mpa |
伸长率 δ4 % |
布氏硬度 |
夏比冲击动 AK J |
|
|
mm |
in |
|||||
|
79.4~174.6 |
31/8-63/4 |
≥758 |
≥965 |
≥13 |
≥285 |
≥54 |
|
177.8~279.4 |
7~11 |
≥689 |
≥931 |
|||
钻铤的主要公差尺寸
|
外径范围OD |
外径OD |
内径ID |
长度 |
台角倒角直径 | |
|
mm |
in |
||||
|
≤88.9 |
≤31/2 |
+1.2 0 |
+1.6 0 |
+152.4 |
40.4 |
|
>88.9~114.3 |
>31/2~41/2 |
+1.6 0 |
|||
|
>114.3~139.7 |
>41/2~51/2 |
+2.0 0 |
|||
|
>139.7~165.1 |
>51/2~61/2 |
+3.2 0 |
|||
|
>165.1~215.9 |
>61/2~81/2 |
+4.0 0 |
|||
|
>215.9~241.3 |
>81/2~91/2 |
+4.8 0 |
|||
|
>241.3 |
>91/2 |
+6.4 0 |
|||
钻铤螺纹连接部位应力分散槽
|
螺纹类型 |
内螺纹台肩面至最后 一牙刻痕长度 LX ±1.59 mm |
内螺纹圆柱段 直径 Dcb +0.40 -0 mm |
内螺纹圆柱段 后的锥孔锥度 ±20.83 mm/m |
外螺纹槽 直径 DRC +0 -0.79 mm |
可替代内螺纹台肩面 至应力分散槽长度 LRG +0 -3.18 mm |
|
NC35 |
82.6 |
82.15 |
166.67 |
82.15 |
85.73 |
|
NC38 |
88.9 |
88.11 |
166.67 |
89.10 |
92.08 |
|
NC40 |
101.6 |
92.87 |
166.67 |
95.81 |
104.78 |
|
NC44 |
101.6 |
101.60 |
166.67 |
106.36 |
104.78 |
|
NC46 |
101.6 |
106.76 |
166.67 |
109.93 |
104.78 |
|
NC50 |
101.6 |
117.48 |
166.67 |
120.45 |
104.78 |
|
NC56 |
114.3 |
121.84 |
250.00 |
134.04 |
117.48 |
|
NC61 |
127.0 |
132.95 |
250.00 |
148.31 |
130.18 |
|
NC70 |
139.7 |
152.00 |
250.00 |
170.54 |
142.88 |
|
NC77 |
152.4 |
166.29 |
250.00 |
188.01 |
155.58 |
|
65/8REG |
114.3 |
134.14 |
166.67 |
137.59 |
117.48 |
|
75/8REG |
120.7 |
148.83 |
250.00 |
161.26 |
123.83 |
|
85/8REG |
123.8 |
172.24 |
250.00 |
185.45 |
127.00 |
内螺纹背孔式应力分散槽 / 外螺纹应力分散槽 / 替代的内螺纹应力分散槽
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