| met. |
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。) |
