规格：

S14x1/2F

S16x1/2F

S18x1/2F

S18x3/4F

S16x3/4F

S20x1/2F

S20x3/4F

S20x1"F

S25x1"F

S25x1/2F

S25x3/4F

S32x1"F

S32x3/4F