Unequal angle refers to the angular cross section and length are not equal on both sides of the steel. Is the angle in one. 
 Equilateral angle steel angle is equal on both sides. Such as the common 4 # angle is the angle that 40X40X4. 40X40 is that both sides of his length of two sides 40MM is the other corner is just the same. Not the same as the length of the two sides called unequal angle. Most of equilateral angle steel six meters, or twelve meters of nine meters. Tonghua Steel is also some 7M. 8M. 10M special length. Pao's on what the length of everything. But he will not be out of 6M below. I have a theory of our company to sell the weight conversion table angle. Common to the Northeast region. More practical.