453328M2/W502 SKF渐进式计量装置 VGBB MKU1-KW2-20004 429 MKU1-KW2-20004+429;453328M2/W502参数;453328M2/W502厂家直供;VGBB MKU1-KW2-20004 429 MKU1-KW2-20004+429重量;VGBB MKU1-KW2-20004 429 MKU1-KW2-20004+429优势