H型钢，是一种截面面积分配更加优化、强重比更加合理的经济断面型材，因其断面与英文字母“H”相同而得名。H型钢的两条外边内侧没有斜度，是平直的。这使得H型钢的焊接拼接比工字钢操作简单，单位重量的力学性能更好，可以节省大量的材料和施工时间。
H steel is a more efficient and economical section with high section area distribution, because its section is the same as the English letter "H". The two sides of the H type steel h***e no slope inside the inner side, and they are straight. This makes the welding and splicing of H steel simpler than I-steel, better mechanical properties per unit weight, and can s***e a lot of material and ctruction time.
选择胶合板主要看其甲醛释放量和胶合强度。如果胶合板的胶合强度不好，容易散架。选择时注意胶合板的标称厚度与实际厚度是否相符。
The choice of plywood mainly depends on its formaldehyde emission and bonding strength. If the gluing strength of plywood is not good, it is easy to fall apart. When choosing, pay attention to whether the nominal thickness of plywood is in line with the actual thickness.