1) pin finned drop shaped tube
滴形钉头管
1.
The experimental research of the hydraulic resistance within Re =1×10 4～1×10 5 is carried out for the pin finned drop shaped tube at different attack angles by means of the wind tunnel .
利用风洞实验 ,研究了Re =1× 10 4～ 1× 10 5范围内滴形钉头管在不同攻角下的流阻特性 。
2) tubes with pin fins
钉头管钉
3) nail punch
钉形冲头
4) nailhead furnace tube
钉头炉管
1.
In the long-term operation of atmospheric and vacuum heat furnace that use vacuum heavy oil as fuel,thesurface of nailhead furnace tube in the convection chamber was seriously deposited.
以减压渣油为燃料的常减压加热炉在长期生产运行过程中,对流室钉头炉管表面结垢严重。
5) pin tube
钉头管
1.
The traditional manufacturing method of pin tube, which pin is loaded by manual and welt by ordinary weld gun, with heavy labor intensity, low productivity, high energy consumption and instable welding quality.
钉头管是一种通过在光管外表面上焊接钉头的方法加工成型的换热元件，它广泛应用于石油、化工等行业的工业加热炉的对流段内，满足管内和管外不同流体传热的需要。
补充资料：头管
1.觱篥的别称。古代的一种管乐器。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条