用标准规格的钢架立于洞口的两侧，确保钢架的垂直、水平都在同一线上，然后将膨胀螺栓固定到墙壁上，螺栓数量不得少于10个，需保证每个点在承受1000N的垂直拉力时不会脱落、松动。固定膨胀螺栓时，要注意避开轨道固定件的安装位置。

First, industrial workshop door installation steel frame

Use steel frames of standard specifications to stand on both sides of the hole to ensure that the vertical and horizontal lines of the steel frames are on the same line, and then fix the expansion bolts to the wall. The number of bolts shall not be less than 10, and ensure that each point will not fall off and loose when subjected to 1000N vertical tension. When fixing the expansion bolt, avoid the installation position of the rail fastener.

3、用带眼角钢制成两个三角架，然后将其与水平轨的末端用的小帽螺丝、螺帽连接，并用的膨胀螺栓固定到天棚或墙壁上。

Two, industrial workshop door installation track

1, according to the width and height of the industrial workshop door plate to determine the position of both sides of the track fasteners, and then fixed with square head screws. When determining the position of the fastener, in order to ensure the same horizontal line at the position, you can measure the level of the horizontal tube.

2. Use a tape measure to measure the distance between the horizontal rail and the wall and the two horizontal rails, and use a level to measure the level of the horizontal rail, and then use small cap screws and hexagonal nuts to connect and fix the horizontal rail and track fasteners.

3. Make two tripod with eye Angle steel, and then connect it with small cap screws and nuts at the end of horizontal rail, and fix it to the ceiling or wall with expansion bolts.