1.
Evaporation heat transfer in smooth and internal grooved tubes;
水平光管和内螺纹强化管内换热性能的研究
2.
internal ribbed tube
内肋片管，内螺纹管
3.
NPSI (American Standard Internal Straight Pipe Threads)
美国标准内直管螺纹
4.
reducing extension piece
异径内外螺纹管接头
5.
Experimental Research on Strength Heat Transfer of Vertical Spiral Steel Tube Under the Condition of Condensation;
凝结条件下垂直螺纹钢管强化传热的试验研究
6.
Situation of technological develop ment of welding internal -thread cop per tubes and seamless internal -thread coppertubes at home and abroad
国内外焊接内螺纹铜管与无缝内螺纹铜管的技术发展状况
7.
external and internal thread grinding machine
外螺纹及内螺纹磨床
8.
pin-to-box pipe
阳螺纹-阳螺纹管子
9.
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。
10.
Manufacture of Optimum Cold-drawn Internal-spiral Seamless Steel Tube for Ultra-supercritical Boiler Service
超超临界锅炉用优化内螺纹冷拔无缝钢管的生产
11.
carbide tool shank for petroleum pipe internal threading
石油管内螺纹硬质合金刀杆
12.
Three dimensional FE simulation of ball spinning of inner grooved copper tubes
内螺纹铜管滚珠旋压三维有限元模拟
13.
Ivestigation on Flow Boiling Heat Transfer Characteristics of R290 and R404A in Horizontal Microfin Tube;
R290与R404A内螺纹管中沸腾换热研究
14.
Study on Algorithm of CAT for Joint Internal Thread;
管接箍内螺纹CAT系统计算方法的研究
15.
Inside Weld Crack Analysis and Control of SSAW Pipe
螺旋埋弧焊管内焊缝裂纹分析与控制
16.
FE simulation on the ball spinning forming of inner grooved copper pipe
内螺纹铜管滚珠旋压成形有限元模拟
17.
The results of experiments showed that spirally fluted titanium-tube are better choice on heat transfer enhancement for the miniaturization of naval steam condensers.
实验结果表明，钛螺纹槽管是实现冷凝器小型化较为理想的强化管管型。
18.
NPT tapered tube thread gauges
NPT锥管螺纹量规