... Kinds of grades,can meet different customer's requirement.We ca n provide them with good quality and low price. Section steel Channel Steel ... 6000-12000mm 2. Grades: A, B, AH32, AH36. All these grades adopt DNV, ABS, GL, LR, BV, KR ... 80-450mm Length: 8000-12000mm 2. Grades: Q195, Q235. All these grades adopt DNV, ABS, GL, LR, BV, ... states are available for customers' requirements kinds of section steel