1) Open the high-pressure multi-stage pump inlet valve, slightly open the vent valve, until the vent to see oil, and no gas, close the vent valve; 2) Manually turn on the auxiliary oil multi-stage pump to adjust the lubricating oil pressure greater than 0.25MPa, adjust the high-pressure motor lubricating oil pressure to 0.01 ~ 0.05MPa, the lubricating oil branch back to normal oil; 3) wear good labor insurance products, ready for related tools; 4) Check the reaction feed multistage pump inlet and outlet flow, the raw material tank liquid level to meet the open multi-stage pump requirements; 5) Turn on the multi-stage pumping of raw material to the reaction tank, notify the opening of the return valve to be not less than 40% (to meet the minimum flow of this multistage pump not less than 66 tons / hour) normal; 6) check the oil station oil level is appropriate, sample analysis of lubricants, oil filter filter differential pressure, pressure switch, pressure and other instruments far into normal, oil cooler process is normal, and put into use; 7) Inspection machine multi-stage pump, pressure gauge, wheel cover, wheel bolts, anchor bolts, valves, pipe flange gasket intact; 8) External operation report multi-stage pump to meet the conditions to meet, within the operating interlock reset, observed in the DCS reaction feed multi-stage pump start multi-stage pump to meet the conditions; 9) manual pan two laps, high-pressure multi-stage pump without unevenness of the phenomenon. Architectural Tension Bar For Construction High Strength Steel Tie Rod are steel structural members made of carbon structural steel and alloy steel, processed by machining, heat treatment and surface anti-corrosion treatment, supplemented by adjusting sleeves, lock and joints etc. The steel tie rod are important components of steel structures for construction of giant, large span buildings and ship docks. They are mainly used for prestressed parts and large span buildings in construction projects. While the strength of the product is improved, but the plasticity index is not reduced, which satisfies the principle of using the same amount of strength in the architectural design. The tie rods, tie bars, tension rods and tension bars steel grades are specified as grade 460, grade 520, grade 550, grade 650. Tension Bar,High Tensile Steel Rod,Structural Tension Rods,Architectural Tension Bar For Construction SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.lerenspecialsteel.com