API B series Pumping Units 1)high reliability 2)simple operation 3)easy maintenance 4)long servicing API B ... Performances1,High reliability, simple operation, easy maintenance, long service life.2,Gear reducer is involute herring-bone gearing, work smoothly and ... -647,60064,5480,0003B-80D-133-5413,30054,4180,0004B-80-119-6411,90054,4180,0005B-80D-76-547,60054,4180 ...