等径四通 straight cross 不锈钢四通 stainless
cross
异径四通 reducing cross 螺纹四通 Threaded Cross 四通盖板 Horizontal
(cross) cover
异径四通(一个分支口为异径)reducing cross (reducing on one outlet)
异径四通(一个直通口及分支口为异径) reducing cross (reducing on
one run and outlet)
异径四通(两个分支口为异径) reducing cross (reducing on both
outlet)
异径四通(一个直通口及两个分支口为异径) reducing cross (reducing on
one run and both