型号                    内径（mm）                                  外径（mm）           乙烯层厚度              每卷长

PL-4-12                 11.4                                            17.7                     0.6                 50

PL-4-15                 14.1                                            20.6                     0.6                 50

PL-4-17                 16.6                                            23.1                     0.6                 50

PL-4-24                 23.8                                            30.4                     0.6                 25

PL-4-30                 29.3                                            36.5                     0.6                 25

PL-4-38                 37.1                                            44.9                     0.6                 25

PL-4-50                 49.1                                            56.9                     0.8                 20

PL-4-63                 62.6                                            71.5                     0.8                 20

PL-4-76                 76.0                                            85.3                     0.8                 20

PL-4-83                 81.0                                            90.9                     1.0                 20

PL-4-101               100.0                                         110.1                    1.0                 10

PL-5型可绕金属电线保护套管，外层为镀锌钢带，中间层为钢带，里面层为耐水电工纸，外表包有良好柔韧性的PVC材料