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钻 杆
标准：API SPEC 5D，API SPEC 7
用途：用于钻井
钻杆成品规格(对焊工具接头后)：
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管体
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管端形式
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对焊工具接头
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规格外径
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公称重量
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钢级
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壁厚
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in.
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mm
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lb./ft
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kg/m
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in.
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mm
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2 7/8
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73.0
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10.40
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15.48
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E,X,G,S
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0.362
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9.19
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I,E
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NC31
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3 1/2
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88.9
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13.30
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19.80
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E,X,G,S
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0.368
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9.35
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I,E
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NC38
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3 1/2
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88.9
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15.50
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23.08
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E
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0.449
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11.40
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I,E
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NC38
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3 1/2
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88.9
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15.50
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23.08
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X,G,S
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0.449
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11.40
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E,I,E
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NC38
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4 1/2
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114.3
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16.60
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24.71
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E,X,G,S
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0.337
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8.56
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E,I,E
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NC50
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4 1/2
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114.3
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20.00
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29.78
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E,X,G,S
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0.430
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10.92
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E,I,E
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NC50
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5
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127.0
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19.50
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29.03
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E
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0.362
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9.19
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I,E
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NC50
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5
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127.0
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19.50
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29.03
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X,G,S
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0.362
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9.19
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E,I,E
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NC50
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5
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127.0
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25.60
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38.11
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E
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0.500
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12.70
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I,E
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NC50
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5
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127.0
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25.60
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38.11
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X,G,S
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0.500
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12.70
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E,I,E
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NC50
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注：1.管体管端形式代号为：I =内加厚
E =外加厚
I-E =内外加厚
2.工具接头按API SPEC7制造
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