The requirements of the steel grating installation specification, the national standard specificatio

After installation, the parts that do not need to be disassembled or moved frequently are fixed by welding, such as walkways, working platforms, etc. The welding part is selected at the place where the first flat steel of each corner of the steel grating plate is connected with the load-bearing beam, and the welding adopts fillet welding, and the height of the weld is not less than 3mm, and the length is not less than 20mm. After welding, clean the surrounding oxidized foreign matter and brush the zinc-rich paint twice to prevent rust.

The connection of the steel structure load-bearing beam and the steel grating plate has two ways of welding fixing and bolt connection, it is important to pay attention to the installation should be firm and reliable, there should be an installation gap of 1cm between the adjacent steel grating plates, and the installation must be welded in the place close to the vibration source.

Steel grating plate is also called steel grating, grating plate is a kind of steel product with flat steel according to a certain spacing and crossbar, and welded into a kind of steel product with a square lattice in the middle, mainly used to make gutter cover plate, steel structure platform plate, steel ladder tread plate, etc., and the crossbar is generally made of square steel that has been twisted.

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The steel grating installation specification requires that the installation of the steel grating can be fixed by welding and mounting clamps, and the welding fixing is suitable for permanent parts that do not need to be disassembled, such as the platform around the equipment, and the installation clamp has the characteristics of not destroying the zinc layer and easy to disassemble.

Legal Analysis: The steel-plastic grid is a metal frame made of a set of parallel metal grids, which is placed obliquely on the channel through which the wastewater flows, or at the inlet of the sump of the pumping station, to intercept large pieces of suspended or floating solid pollutants, so as not to block the sludge discharge pipe of the pump and sedimentation tank. Author:

I met her laterSource: bilibili

Legal basis: Civil Code of the People's Republic of China

Article 176:Civil entities are to perform civil obligations and bear civil liability in accordance with legal provisions and agreements between the parties.

Article 177:Where two or more persons bear proportional responsibility in accordance with law, and the size of the responsibility can be determined, each bears corresponding responsibility; Where it is difficult to determine the size of the responsibility, the responsibility is to be borne equally.

Article 178:Where two or more persons bear joint and several liability in accordance with law, the rights holder has the right to request that some or all of the persons jointly and severally liable bear responsibility. The share of liability of the jointly and severally liable persons shall be determined according to the size of their respective liabilities; Where it is difficult to determine the size of the responsibility, the responsibility is to be borne equally. The jointly and severally liable persons who are actually liable in excess of their own share of liability shall have the right to recover compensation from other jointly and severally liable persons.

Joint and several liability shall be prescribed by law or agreed upon by the parties.

The steel grille mainly has the following characteristics:

1: High strength, light structure.

2: Strong anti-corrosion ability and durable.

3: Beautiful appearance and shiny surface.

4: No dirt, no rain and snow, no water, self-cleaning, easy to maintain 5: Ventilation, lighting, heat dissipation, anti-slip, good explosion-proof.

6: Easy to install, disassemble, etc. The classification of steel grille is mainly divided from the following points:

1) According to the welding method, it can be divided into: pressure welding type, phase embedding type, through lock type and through welding type (2) according to the shape of the side surface of the flat steel side according to its load, it can be divided into: plane type, tooth type and "I" type, etc. (3) According to its use, it can be divided into:

General purpose steel grating and special purpose steel grating such as: trench cover, tread plate and so on.

4) Steel grating is divided into stainless steel grating and carbon steel grating according to the material.

The following is the manufacturing process of the steel grating:

Crafting process.

Steel grating plate is now more common steel grating, steel grating plate is made of flat steel processing steel grating plate, many advantages of steel grating plate have been praised by customers, surface hot-dip galvanizing treatment can not only prolong the service life of steel grating plate, but also can play a role in preventing oxidation of steel grating plate, simple appearance, large bearing capacity, can be applied in different environments. Let's take a look at the standard of steel grille. The world collapsed.

Steel grating standard.

GB700-88 is carbon structural steel, GBl220-92 is stainless steel bar, GB3159-83 is a hydraulic universal testing machine, is a fixed steel inclined ladder, is a fixed industrial steel platform, GB T13912-92 represents the technical requirements of metal covering layer and hot-dip galvanized layer of steel products.

The steel grating needs to be arranged by the load flat steel and the crossbar according to a certain warp and weft and leave a certain spacing to form a grid, the warp direction is the length direction is the load flat steel, and the weft direction is the width direction is the crossbar. It needs to be fixed at each interpolation point of the crossbar and the load flat bar, and it can be welded, but it is best to weld it with pressure resistance, but it can also be welded with arc welding. If the pressure lock method is used to stare and fix, the crossbar can be directly pressed into the load flat steel by a press, so as to achieve the effect of fixing.

The load flat bars on the steel grating can be flat flat bars, I-shaped flat bars or slitting strip steel. If it is used for the platform, it is the steel grating on the walkway, and its minimum width cannot be less than 300mm. The spacing between the load bars is recommended to be 30mm, 35mm or 40mm, and the spacing between the crossbars is recommended to be 100mm, 76mm or 50mm.

The allowable deviation of the length and width of the steel grating is 5mm, and the non-perpendicularity of the loaded flat bar needs to be less than 10% of the width of the flat bar. The deflection length of the edge of the crossbar to the center of the steel grating should be less than 5 mm, the longitudinal bending deflection should be less than 1 200 of its length, and the transverse bending deflection should be more than 1 100 of its width.

Classification of steel grating plates.

The classification of steel grating is mainly divided from the following points:

1) According to the welding method, it can be divided into: pressure welding type, phase embedding type, through lock type and through welding type.

2) According to the shape of the side surface of the flat steel under its load, it can be divided into: plane type, tooth type and "I" type.

3) According to its use, it can be divided into: general purpose steel grating and special purpose steel grating, such as: trench cover plate, tread plate and so on.

4) Steel grating is divided into stainless steel grating and carbon steel grating according to the material.

The steel grille mainly has the following characteristics:

1: High strength, light structure.

2: Strong anti-corrosion ability and durable.

3: Beautiful appearance and shiny surface.

4. No dirt, no rain and snow, no water, self-cleaning, easy to maintain.

5. Ventilation, lighting, heat dissipation, anti-slip and explosion-proof.

6. Easy to install and remove.

1.The most commonly used material for ordinary steel grating plate is Q235

2.The most commonly used models of flat iron: 253 255 303 305 323 325 403 404 405 and other specifications.

For the manufacture of flat iron, it is made by large-scale slitting shear of hot-rolled plate, so special specifications of flat iron can also be made.

Toothed flat steel: The model is the same as the popular flat steel, but the difference is that there is a concave and convex tooth mark on one side of the flat steel. The first thing is non-slip.

Flat steel: The flat steel is thick on both sides and thin in the center.

4.Twist steel: also called twisted square steel.

5.Ordinary 5x5 6x6 8x8 square steel, twisted steel bar.