Surestrong Machinery Co.,Ltd is one of the leading China type d and f pressure gauge manufacturers and suppliers, welcome to check type d and f pressure ... pump. It is mainly used for the Petroleum, coal, chemical industry, drilling, mechanism etc,This new model is used in measuring ... the driller to make corrections avoiding major problems. Specifications1. Model D Range: 1, 000, 2,000, 3,000, 5,000, 6 ...