phillips drywall screws

Because they are afraid of the rain, so there is no need to say more, and the surface of the packaging is more afraid of the sun, so it is not recommended to prevent the outdoor blade thorn rope will cause the woven bag to become ineffective, resulting in the internal blade thorn rope exposed to affect the later use.

It is generally believed that the positive and negative twisting wire wire is not as durable as the thickness, common sense thinks so, but the positive and negative twisting wire wire is used in hot galvanized steel wire, which is more than 3 times the tensile strength of the iron wire, and the zinc amount is not lower than the hot plated wire

Hot dip galvanizing has been used for more than 150 years, and its principle has not changed so far. The steel structure should be fully immersed in zinc at one time to achieve uniform galvanized film structure. If it is too long or too wide to be dipped twice, the zinc layer at the joint will appear rough, too thick and so on. In addition, if the single weight of steel structure is too heavy, it will make its operation difficult if it exceeds the load of galvanizing equipment. Therefore, the communication with the hot dip galvanizing factory in advance.