Chongqing hengjilin Trading Co., Ltd. wholesales bridge timber for a company
Attention should be paid to the following items for bridge timber:
香蕉tv: 1. Pest damage
In the process of storage, transportation and use, wood is often affected by pests. The natural enemies are termites, longicorn beetles and weevil. If the timber is not properly protected, it will be damaged by these pests, thus affecting the quality of the engineering timber.
It is suggested that if the wood is used outdoors, it should be soaked in preservative to let the preservative permeate into the wood fiber, making the wood green from the inside to the outside, preventing corrosion and resisting insect attack.
Cracks in square timber are often referred to as cracking, which is due to cracks between the fibers of the wood, which will degrade the rating of the square.
If the wood to buy back cracking, you can use 520 glue mixed with sawdust, in the coating to the crack, it is OK.
Under certain conditions, wood will be damaged by wood rot fungi and bacteria, which will lead to changes in the color and structure of wood, which will become soft and fragile, showing pore, powder or sponge shape. This is the performance of wood decay.
The discoloration of wood is mainly caused by chemical discoloration and fungal discoloration. Chemical discoloration is caused by the interaction between wood and chemical products, while fungal discoloration is caused by fungal invasion.
The warpage and distortion are mainly caused by the process of processing, drying and storage.