The invention belongs to the technical field of architectural profiles and particularly relates to a double corrugated web steel box composite beam.
本发明属于建筑型材技术领域，具体涉及一种双波纹腹板钢箱组合梁。
20kg/box, Food double corrugated paper box outside and PE food plastic pack inside.
20公斤/箱，内衬PE食品级塑料袋，外双楞瓦楞食品级红纸箱。
应用推荐