Determination of raw material suppliers Due to the impostor in the current material market, there are certain differences in the morality of the products of the same brand of materials and different material manufacturers, and there are also large differences in prices. The quality of the material has a greater impact on the overall manufacturing quality of the equipment. Heavy Oil Catalytic Cracking Unit

Determination of pre-welded parts before all heat treatment For equipment that needs to complete all heat treatment, the supplier should be requested to weld all kinds of pre-welded parts to the equipment body, and then complete all heat treatment. The pre-welded parts not only include the support shields indicated on the equipment drawings, but also the pre-welded parts of the platform support and the thermal insulation support.

Clarify the supply method of the internal parts. The internal parts should also be fully assembled by the supplier in the manufacturing workshop, and all the internal parts should be shipped. Internal parts that need to be dismantled and inspected internally or are inconvenient to transport and install.

Determination of the matching flange size When requesting the manufacturer to supply the matching flange for the equipment connection, the design institute may not necessarily make the same decision on the wall thickness series of the equipment connection and the matching pipe, so the specific processing size of the matching flange should be specified. The drawings provided by the Planning Institute shall prevail.

The nozzle orientation diagram is truly recognized by the same general design institute's equipment professional supply. The nozzle orientation in the equipment assembly diagram is only a schematic supply of quantity and specifications. The final nozzle orientation diagram is supplied by the piping professional after the piping work is completed. . Therefore, it must be clarified that the orientation diagram of the nozzle shall be subject to the orientation diagram of the final design of the nozzle provided by the design institute provided by the buyer, and the opening of the cylinder shall be completed after the buyer's on-site confirmation. Do not end the opening according to the position of the nozzle on the general assembly drawing.