双排螺栓管夹分为哪几类，双排螺栓管夹有三大类：A9-1(25-600)，A9-2(1''-24’')，A9-3(50-600)双排螺栓管夹公制管用具体型号：A9-1(25),A9-1(32),A9-1(40),A9-1(50),A9-1(65),A9-1(80),A9-1(100),A9-1(125),A9-1(150),A9-1(200),A9-1(250),A9-1(300),A9-1(350),A9-1(400),A9-1(450),A9-1(500),A9-1(600)

双排螺栓管夹英制管用具体型号：A9-2(1),A9-2(1 1/4),A9-2(1 1/2),A9-2(2 1/2),A9-2(3),A9-2(4),A9-2(5),A9-2(6),A9-2(8),A9-2(10),A9-2(12),A9-2(14),A9-2(16),A9-2(18),A9-2(20),A9-2(20),A9-2(24)

双排螺栓管夹铸铁管用具体型号：A9-3(50),A9-3(65),A9-3(80),A9-3(100),A9-3(125),A9-3(150),A9-3(200),A9-3(250),A9-3(300),A9-3(350),A9-3(400),A9-3(450),A9-3(500),A9-3(600)