Fireworks and firecrackers, as a traditional product that expresses grand nature in China, have been sounded since the invention of gunpowder. Although respect is expressed in the context of environmental protection, this traditional fire-retardant pattern has gradually disappeared. However, there are still a considerable number of users who will still set off fireworks as the main means of festival entertainment or memorial service. However, fireworks and firecrackers look good at the same time with high-risk nature. Especially in the more concentrated and unstable transportation process, the high-risk nature of the artillery is infinitely amplified. Therefore, the safety of the special vehicle transportation for fireworks and firecrackers must be emphasized.
First, in the process of loading and unloading cargo, it should try to avoid all kinds of collision friction action of the goods, and it can't use metal transportation objects such as crowbars to participate in handling. The goods need to be handled by a single person. It is strictly forbidden to load and unload multiple pieces. Also keep in mind that the stack height before shipment of goods must not exceed the actual height of the carriage.
Second, the special fireworks and firecrackers used for transport must have good insulation and explosion-proof properties. Short-distance gun transport within the factory can be used to push small rubber wheeled vehicles. Long-distance distribution of transport around the use of advanced and stable special fireworks and firecrackers, and in actual driving should be done at low speed. It is forbidden to use trailers and trucks that cannot completely cover the goods.
3. Regardless of whether or not to assume the task of delivering fireworks and firecrackers, all motor vehicles must be equipped with an effective fire protection device to prevent any harm to Mars before entering the safe area of ​​the warehouse.
4. During the transportation of fireworks and fireworks, a safety distance of at least twenty meters shall be maintained in accordance with the law of explosion prevention and propagation. If there is no unexpected situation during the transport of firecrackers, speeding, etc., may not lead to the transportation of fireworks between the firecrackers and firecrackers. Collision friction of various types of traffic behavior.
5. Special vehicles for fireworks and firecrackers who participate in transportation shall be escorted by high-security commissioners. At the same time, the vehicle body must be clearly marked with dangerous and explosive goods, and the logo shall not be blocked for any reason during transportation.
The special vehicle transportation for fireworks and firecrackers requires each commissioner to seriously escort each time to truly maintain long-term security. In order to bring people the wonderful fun of fireworks, people can feel at ease.
Steel Pipe (steel pipe production technology development began on a bicycle manufacturing industry rise, the 19th century early oil development, during the two world wars ships, boilers, aircraft manufacturing, after the Second World War thermal power boiler manufacturing, chemical industry and petroleum natural gas drilling and transportation, effectively promote the development of steel pipe industry in variety, yield and quality.
Steel pipe is not only used for conveying fluid and powder solid, exchange heat energy, manufacturing machinery parts and containers, it is a kind of economic steel. The steel pipe is used to make the structure of the building structure, the support and the mechanical support, which can reduce the weight and save the metal from 20 to 40%, and can realize the mechanization construction of the factory. The construction of the highway bridge with the steel pipe can not only save the steel, simplify the construction, but also greatly reduce the area of the coating protection layer, save the cost of investment and maintenance.
Photo of our steel pipe:
According to the production method
Steel pipe according to the production method can be divided into two categories: Seamless Steel Pipe and pipe joints, pipe joints as Welded Steel Pipe.
1. Seamless steel pipe according to the production method can be divided into: hot-rolled seamless tube, cold drawn tube, precision steel tube, thermal expansion tubes, cold spinning tube and pipe extrusion.
Seamless steel pipe made of high quality carbon steel or alloy steel, hot-rolled, cold-rolled (drawn) branch.
Bundles of steel tubes
Bundles of steel tubes
2. Welded steel pipe for the different welding process is divided into the furnace pipe, welding (ERW) pipes and automatic arc welding, because of the different welding form is divided into two kinds of longitudinal and spiral welded pipe, due to the shape of the end and circular welded pipe and shaped (square, flat) welded pipe.
Welded steel pipe is rolled into a tube shaped steel plate to butt or spiral seam welding and, in the manufacturing method, voltage liquid transportation by welding steel pipe, spiral seam welded steel pipe and directly roll welded steel pipe, welded steel pipe. Seamless steel pipe can be used in a variety of industries, such as liquid pressure pipe and gas pipeline. Welding pipe can be used for water pipelines, gas pipelines, heating pipes, electrical appliances, etc..
By material
According to the material (i.e. steel pipe steel) can be divided into: carbon tubes and alloy tube, stainless steel tube etc..
Carbon pipe can be divided into ordinary Carbon Steel Pipe and high quality carbon structure pipe.
The alloy tube can be divided into: low alloy pipe, alloy pipe structure, high alloy tube, high strength tube. Bearing tube, heat resistant acid resistant stainless steel pipe, precision alloy (such as can be cut alloy) tube and high temperature alloy tube, etc..
Classification by connection
According to the pipe end connection can be divided into: light pipe (pipe end without thread) and the car wire pipe (Guan Duan with a thread).
The wire pipe is divided into: ordinary car wire pipe and pipe end upset car wire pipe.
Thick wire pipe can also be divided into: plus thick (with external thread), inside the thick (with the inside of the thread) and inside and outside the thick (with internal and external threads) and other places of the car wire pipe.
Threading pipe can also be divided into: ordinary cylindrical or conical thread and special thread, such as the wire pipe.
In addition, according to the needs of users, the car is generally equipped with pipe connector delivery.
According to the coating characteristics
According to the characteristics of surface coated steel pipe can be divided into: Clarinet (not coated) and coating tube.
The coating pipe has galvanized pipe, aluminum, chrome plated tube, alumetized tubes and other alloy layer of steel pipe.
The coating pipe is coated with an outer coating pipe, an inner coating pipe, an inner and an outer coating pipe. Commonly used coatings are plastic, epoxy, coal tar epoxy resin as well as a variety of glass type of anti-corrosion coating materials. Galvanized pipe is divided into KBG pipe, JDG pipe, screw pipe, etc.
Steel Pipe
Ship Building Steel Pipes,Dredger Structural Pipe,Structural Steel Pipe,Double Wall Steel Pipe
Unisite Group Ltd. , https://www.shipsparts.nl