C型插筒八个1/4 in井（受热面） 3109-3 图片

p1Src=//y3.yzimgs.com/uploads/511249/202647-8447710.png?watermark/2/text/6YOR5bee5biC5bmz5bGx6LS45piT5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/750/fill/I0E3QTlBOA==/gravity/SouthEast"