规格：

L14x1/2F

L16x1/2F

L18x1/2F

L16x3/4F

L18x3/4F

L20x1/2F

L20x3/4F

L25x1/2F

L25x3/4F

L25x1"F

L32x1"F

L32x3/4F

L20x1"F