4分=DN15*长40mm 4分=DN15*长50mm 4分=DN15*长70mm 4分=DN15*长100mm 4分=DN15*长120mm 4分=DN15*长150mm 4分=DN15*长200mm 4分=DN15*长250mm 4分=DN15*长300mm 4分=DN15*长400mm 4分=DN15*长500mm 4分=DN15*长1米 6分=DN20*长40mm 6分=DN20*长50mm 6分=DN20*长70mm 6分=DN20*长100mm 6分=DN20*长120mm 6分=DN20*长150mm 6分=DN20*长200mm 6分=DN20*长250mm 6分=DN20*长300mm 6分=DN20*长400mm 6分=DN20*长500mm 6分=DN20*长1米 1寸=DN25*长50mm 1寸=DN25*长70mm 1寸=DN25*长100mm推荐 1寸=DN25*长120mm 1寸=DN25*长150mm 1寸=DN25*长200mm 1寸=DN25*长250mm 1寸=DN25*长300mm 1寸=DN25*长400mm 1寸=DN25*长500mm 1寸=DN25*长1米 1.2寸=DN32*长50mm 1.2寸=DN32*长70mm 1.2寸=DN32*长100mm 1.2寸=DN32*长150mm 1.2寸=DN32*长200mm 1.2寸=DN32*长300mm 1.2寸=DN32*长400mm 1.2寸=DN32*长500mm 1.5寸=DN40*长55mm 1.5寸=DN40*长70mm 1.5寸=DN40*长100mm 1.5寸=DN40*长150mm 1.5寸=DN40*长200mm 1.5寸=DN40*长300mm 1.5寸=DN40*长400mm 1.5寸=DN40*长500mm 2寸=DN50*长60mm 2寸=DN50*长100mm 2寸=DN50*长150mm 2寸=DN50*长200mm 2寸=DN50*长300mm 2寸=DN50*长400mm 2寸=DN50*长500mm 2.5寸=DN65*长75mm 2.5寸=DN65*长100mm 2.5寸=DN65*长150mm 2.5寸=DN65*长200mm 2.5寸=DN65*长300mm 2.5寸=DN65*长400mm 2.5寸=DN65*长500mm 3寸=DN80*长80mm 3寸=DN80*长100mm 3寸=DN80*长150mm 3寸=DN80*长200mm 3寸=DN80*长300mm 3寸=DN80*长400mm 3寸=DN80*长500mm 4寸=DN100*长100mm 4寸=DN100*长150mm 4寸=DN100*长200mm 4寸=DN100*长300mm 4寸=DN100*长400mm 4寸=DN100*长500mm