There are two main types of platform setup for petrochemical equipment, one is patterned steel plate and the other is steel grating plate. Now the difference between the two and the design idea to give you a simple introduction.

1, pattern steel plate, the surface with a pattern of steel plate (below), the English name diamond plate, its pattern into lentil shape, diamond shape, round bean shape, oval mixed shape, the market with lentil shape is the most common. It has many advantages such as beautiful appearance, anti-slip, strengthening performance, saving steel and so on. It is widely used in transportation, construction, equipment surrounding floor, petrochemical machinery and other fields. At present, the thickness commonly used on the market ranges from 2.0-8.0mm, and the width=100% is 1250 and 1500mm.

2. Steel gratingplate, also known as steel gratingplate (below), is a kind of steel product with flat steel and cross bar arranged in accordance with a certain distance, and welded into a square grid in the middle, which is mainly used to make gutter cover plate, steel structure platform plate, step plate of steel ladder, etc. The cross bar is generally twisted square steel. Steel grid plate is generally made of carbon steel, the appearance of hot dip galvanized, can play a role in preventing oxidation. Can also be made of stainless steel, steel grid plate with ventilation, lighting, heat dissipation, anti-slip and other properties, its thickness is about 30~40mm.


3, compared with the steel grid plate pattern steel plate, steel grid plate has obvious advantages, with light weight, high strength, large carrying capacity, and material economy, ventilation and light, beautiful appearance, non-slip safety, easy to clean, easy to install, durable and other advantages, steel grid plate will quickly replace the pattern plate, become the most ideal, the most economical products. Patterned steel plate is cheaper than, generally no special requirements are used patterned steel plate, such as towers and air coolers and other equipment platforms, steps, general frame platforms, etc. Liquefied hydrocarbons, operating temperature is equal to or higher than the natural point of the combustible liquid pump above, such as the arrangement of A, B, C class process equipment, should also be used for isolation protection. If the pipeline crosses the platform, a casing should be installed at the crossing, and the gap inside the casing should be sealed to prevent flammable liquid leakage. Only when there are flammable gases such as hydrogen that are lighter than air, steel grid plates are used in buildings and structures, such as hydrogen compressor plant platform, hydrogenation reactor framework platform, reforming reverse re-framework platform, etc., mainly to prevent the accumulation of combustible gases and cause fire and explosion risk.

4. It is worth mentioning that although the use of pattered steel plate reduces the fire hazard and scope in preventing fire danger, it is not conducive to fire fighting, and it is easy to cause liquid accumulation and make the fire point move up. The use of steel grid plate can not only prevent liquid accumulation, eliminate the high platform fire, as for the bottom have a fire layer, and easy to extinguish. Although its price is more expensive, but the service life is long, not easy to corrosion, can be said to be once and for all. Some friends think that the steel grid is empty, and the fire is easier to burn and expand the scope after collusion, but at present, many foreign projects, foreigners are required to use steel grid, because when the fire is put out, whether it is water, sand or foam, it is easier to pass. Slow down combustion and fire suppression, Xiaobian feels that of course, the latter is more important.


By the way, the measures to prevent combustible gas accumulation in the device:buried pipelines or equipment to fill sand, buried tanks set non-purification wind pipe, compressor plant open or semi-open design, positive pressure ventilation in explosive hazardous environment.