口径选择：所有尺寸100mm101mm103mm108mm110mm129.5mm135mm152*95mm157*95mm15mm176mm18mm20mm20mm 23mm24mm25mm28mm30mm32mm35ml37.737MM37mm38MM38mm39mm40mm42MM42mm43mm44mm45MM45mm46mm47mm49mm50mm51mm52MM52mm53mm54mm 55mm57mm58mm60mm62mm62mm 65mm67MM67mm67mm 68mm70mm72mm75mm76mm78mm78mm 80mm81mm82mm83mm85mm88mm90MM90mm91.40mm93mm93mm 95mm 97.70mm