规格：

L14x1/2M

L16x1/2M

L18x1/2M

L18x3/4M

L16x3/4M

L20x1/2M

L20x3/4M

L25x1"M

L25x1/2M

L25x3/4M

L32x1"M

L32x3/4M

L20x1"M

L14煤气弯