1. Fake steel prone to folding. Folding is the formation of the steel surface of the various broken lines, this defect often runs through the longitudinal product. The reason for folding is due to the pursuit of high efficiency shoddy manufacturers, the reduction is too large, resulting in ears, the next roll when folding, folding products will crack after bending, steel strength decreased. 2. Fake steel often have the phenomenon of Ma surface. Ma surface is due to a serious groove rolling caused irregular irregularities in the surface of steel defects. As counterfeit steel manufacturers to the pursuit of profits, often the most excessive rolling mill. 3. Fake steel surface easy to produce scarring. There are two reasons: 1. Fake steel uneven material, more impurities. 2. Scattered and poor manufacturers guide equipment manufacturers simple, easy to stick steel, these impurities bite roll easy to produce scarring. 4. Cracks on the surface of fake and shoddy materials are easy to crack because the billet is adobe and adobe has many pores. When adobe is cooled due to the thermal stress, the fissures will be generated and cracks will occur after rolling. 5. Scratch and shoddy steel easy to scratch, because the shabby hardware manufacturers simple, easy to produce burrs, scratched steel surface. Deep scratches reduce the strength of the steel. 6. Shoddy steel without metallic luster, reddish or pig-iron-like color for two reasons: 1, its billet is adobe. 2, fake and shoddy material rolling temperature is not standard, and their steel temperature is through visual inspection, so that the required austenitic region can not be rolled, the performance of the steel can not be achieved naturally. 7. Fake and shoddy steel transverse bars thin and low, often appear dissatisfied with the phenomenon, the reason is that manufacturers to achieve large negative tolerance, the first few Road, the finished product is too large, iron is too small, the hole filled with dissatisfaction. 8. The cross section of shoddy steel is oval, because the manufacturer in order to save material, the finished product before the second roll reduction is too large, the strength of such rebar greatly reduced, but also does not meet the standard dimensions of the rebar. 9. The composition of high-quality steel, cold shear machine tonnage, cut end face smooth and neat, and inferior material due to poor quality, cut end face often have the phenomenon of meat, that is uneven, and no metallic luster. And because of inferior products manufacturers cut less head and tail will appear big ears. 10. Fake steel material with more impurities, the density of steel is too small, and serious size tolerance, so in the absence of vernier caliper, it can weigh it. For example, for the rebar 20, the national standard specifies a maximum negative tolerance of 5%. When the 9M is ruler, its theoretical weight is 120kg. Its minimum weight should be 120X (1-5%) = 114kg, Weighing out the actual weight of a single root than 114 kilograms, it is shoddy steel, because it negative tolerance of more than 5%. In general the whole phase weighing effect will be better, mainly taking into account the cumulative error and probability theory. 11. Shoddy steel diameter size fluctuations, because; 1, the steel temperature is unstable yin and yang. 2, the composition of steel is not uniform. 3, due to poor equipment, low foundation strength, rolling mill bounce. There will be a large change within the same diameter within a week, so that uneven reinforcement force prone to fracture. 12. Quality materials, trademarks and printing are more standardized. 13. Three large diameter steel more than 16 threads, the spacing between the two trademarks are IM above. 14. Fake Steel Reinforced tendons tend to wavy. 15. Shoddy steel manufacturers because there is no traffic, so packing more loose. Side oval.