連接螺紋 M5,M6,M12X1,M12X1.25,G1/8,G1/4,G3/8,G1/2,R1/8,R1/4,R3/8,R1/2R1/8,R1/4,R3/8,R1/2連接管直徑 5/3,6/4,8/6,10/8,12/10,15/12.5[外徑/內(nèi)徑]