1. The storage site or warehouse of steel should be selected at the midpoint of clean and stagnant drainage, and away from the factories and mines with harmless gas or dust. The site should be cleared of weeds and all sundries, adhere to clean steel;
2, in the warehouse shall not be stacked together with acid, alkali, salt, cement and other corrosive materials to steel. Different kinds of steel should be stacked, avoid mixing, avoid contact with corrosion;
3, large steel, rail, insult steel plate, large caliber steel pipe, forgings can be stacked in the open;
4, small and medium-sized steel, wire rod, steel bar, medium caliber steel pipe, steel wire and wire rope, etc., can be stored in well-ventilated material shed, but must be on mat mat mat mat;
5, some small steel, thin steel plate, steel strip, silicon steel sheet, small caliber or thin wall steel pipe, all kinds of cold rolled, cold drawn steel and high price, easy to corrosion of metal products, can be stored in storage;
6, the warehouse should be selected according to astronomical conditions, the general use of ordinary blockade type warehouse, that is, a roof with walls, close doors and Windows, with ventilation installation of the warehouse;
7, warehouse requirements pay attention to ventilation in sunny days, pay attention to closed moistureproof in rainy days, often adhere to the appropriate storage environment.
For the construction process of epoxy, vinyl, phenolic and other anticorrosive coatings commonly used in steel pipe, it is generally required that the surface of steel pipe reach nearly white grade (Sa2.5). It has been proved that almost all the oxide scale, rust and other dirt can be removed by using this kind of derusting grade, and the depth of anchor grain can reach 40~100μm, which fully meets the adhesion requirement of anticorrosive coating and steel pipe. Moreover, the spray derusting process can reach the technical condition of nearly white grade (Sa2.5) with low operation cost and stable and reliable quality.
