. The inferior Iron fence usually has a reddish or cast iron color on the outside, which is mainly due to the fact that the steel temperature is not up to standard during its manufacturing process.
1. Look at the outside if there is a polyline. An excellent wrought iron
bar in the community, the outside is the texture of the rules, and if the iron wrought iron table is hypocritical to form all kinds of irregular lines, then it is noted that in the process of production, the merchants seek the number, the amount of pressure is too large. When the next rolling occurs, the folding occurs, so that the strength of the produced steel will drop greatly.
2. See if it is slippery outside. A good residential wrought iron plaque is unusually slippery outside, and the inferior wrought iron plaque is unusually rough outside, and some will be unobtrusive. This wrought iron is not average, and there are many impurities. It is the equipment and production technology of the wrought iron carving bar manufacturer in the community. The steel is easily stuck in the production process and leaves a scar.
3. Look for cracks on the outside. Inferior wrought iron plaques can be seen from the outside. If the raw material is earth slab, the raw materials of such materials are easily cracked at the moment of production.
4. Look at the metallic luster outside. The excellent wrought iron carvings outside have an unusually strong metallic feel and bright colors. The inferior Iron fence
usually has a reddish or cast iron
color on the outside, which is mainly due to the fact that the steel temperature is not up to standard during its manufacturing process.
5. Look at its cross section. The cross-section can reflect the strength of a wrought iron carving bar manufacturer. A wrought iron eagle manufacturer with a more production process, its cross section is abnormally flat, and there will be no bumpy and unyielding phenomenon.