Trench cover packaging, packaging methods are generally three, one, packaged with bundling, generally applicable to relatively neat steel grating. 2, screw rod steel grating covers fixed grate, using four screws pass through the steel bar grating aperture steel grating covers much money one, to ensure that the method with a screw lock. 3 trays that are generally for export packing. Mainly based on the client's circumstances, if a very few steel lattice Itai cover, they do not need handling with a forklift, and generally more convenient bulk. Conversely goods more generally packaged using forklift loading and unloading will be more convenient, in short, everything for the customer convenience, protection products do not produce damage to cargo transit prevail. Trench cover made of flat steel and bars with certain arrangement of latitude and longitude grid spacing by the load flat steel, steel grating that is a longitudinal direction; the weft is the bar, that the width direction of the steel grating. Road rain grate choice: 1, "outdoor drainage design specifications" (GB50014-2006) Section 4.7.1 states: gullies form, number and arrangement of the catchment area should be generated by the traffic, the rain sluicing mouth ability to determine the form and roads. 2, "outdoor drainage design specifications" (GB50014-2006) 4.7.1 Description provisions: provisions gullies design factors should be considered. In the form of gullies, mainly flat and vertical grate grate categories. Flat grate unobstructed flow, but susceptible to tree branches and other debris clogged storm, affecting the ability to collect water. Vertical grate clogging, ditches need to maintain a certain depth, but some towns due to yearly maintenance of roads, as roads heightening, so reducing the vertical section of steel grating grate covers, affecting the ability to collect water. Around can be determined according to the specific circumstances and experiences. Gullies should be arranged according to the terrain and determine the catchment area, some areas are not calculated exactly as road length evenly arranged, not only a waste of investment, and can not receive the expected benefits. Ship Steel Grating Covers | Steel Grating Covers | Asahi promise offered by Anping wire mesh Wire Mesh Products Co., Ltd. Asahi Connaught. Asahi Connaught Anping Wire Mesh Products Co., Ltd. (www.wangpian1688.com) strong, credible, Hebei Hengshui wire mesh industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Asahi Connaught wire mesh and you hand into the brilliant, for a better future!