flange(Although many such tubes are supplied in straight lengths, a great number are manipulated-bent, tapered, flanged, swaged, screwed, tapped and slotted, into the shapes required by manufacturers. 虽然许多这样的管材是以直管定尺供货，但仍有相当一部分管材应厂商要求加工成各种形状一一弯形、锥形、带凸缘、带旋锻端头、带外螺纹、内螺纹以及带有槽口等。)
blister(板、带材缺陷: Blister refers to a surface defect produced by gas that fails to break the surface tension of a metal when it is in the molten state. 泡疤是指气体未能冲破熔态金属的表面张力而产生的一种表面缺陷。)
