1.
pin-to-box pipe
阳螺纹-阳螺纹管子
2.
internal ribbed tube
内肋片管，内螺纹管
3.
Forged steel threaded pipe fittings
GB/T14626-1993锻钢制螺纹管件
4.
reducing extension piece
异径内外螺纹管接头
5.
Application of a new helix screw thread pipe heat exchanger
一种新型螺旋螺纹管式换热器的应用
6.
Tubing thread is available for API tubing threads and TM threads.
油管螺纹可采用API油管螺纹，或TM螺纹。
7.
NPT tapered tube thread gauges
NPT锥管螺纹量规
8.
Apply pipe dope sparingly on pipe threads, never on valve threads.
在管道螺纹上涂敷螺纹油，但是不要在阀门螺纹上涂螺纹油。
9.
Pipe threads where pressure-tight joints are made on the threads
GB/T7306-1987用螺纹密封的管螺纹
10.
minimum number of pipe threads for connections
管螺纹连接的最少螺纹牙数
11.
Pipe threads where pressure-tight joints are not made on the threads
GB/T7307-1987非螺纹密封的管螺纹
12.
A pipe coupling threaded on both ends.
螺纹接头一种两端都带外螺纹的管子
13.
Gauges for sealing tube threads
用螺纹密封的管螺纹量规
14.
Gauges for nonsealing tube threads
非螺纹密封的管螺纹量规
15.
small bundles of spiral vessels
螺纹导管的小维管束
16.
Taper pipe threads with 60 degree
GB/T12716-199160°圆锥管螺纹
17.
API tubing thread
美国石油学会油管螺纹
18.
NPSI (American Standard Internal Straight Pipe Threads)
美国标准内直管螺纹