What is the withstand pressure of galvanized pipe, and how much pressure can the galvanized pipe wit

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Received a job application. I don't know what you mean by "withstand voltage standard". This parameter is not included in the material performance standards. Are you using it for pressure piping?

Ask. The site needs to be made a temporary fire pipe, with an elevation of 157 meters, and I want to use welded steel pipes or galvanized steel pipes, but there are no technical parameters for pipes, are the pipes and valves selected appropriate?

In this case, it is recommended to use seamless steel pipes for strength and economic considerations. The elevation of 157 meters means that a minimum of 157 kg of pressure is required to pump the water to this height (because there is a loss of flow pressure. It is also necessary to consider the pressure of the jet head, so this pressure is very high, and welded steel pipes and general thin-walled galvanized steel pipes cannot be used.

There is a special calculation method for the strength design of high-pressure pipes in the calculation of material mechanics. In this design calculation, there is no need for the pressure standard (in fact, there is no such parameter in the mechanical strength parameters of the material), but the tensile strength is used as a parameter, and there is a special calculation formula. The pressure resistance of all tubes is determined according to this calculation specification.

Please note that the working pressure you need is so high that it is difficult to match it with a pump. In general, the method of lower pressure segmented conveying should be adopted. For example, 40 kg pressure can transport water to a height of about 40 meters, and a 40 kg pressure pump can continue to transport water to an altitude of 80 meters.

Summary. Generally, the pressure of water and gas transmission pipe is, the pressure of seamless steel pipe is, the thickness of the steel pipe is different, the pressure is also different, and the pressure of galvanized seamless pipe and galvanized straight seam pipe refers to the technical standard of the original pipe! The fire pipe is generally 6 kg pressure, there are also special requirements of 8 kg and 16 kg are rare.

GB longitudinal welded steel pipe (that is, the kind of inch, some are galvanized pipes), generally the most used high pressure is 10 kg, according to what I forgot (you can check the big hardware manual). Buried fire pipes are generally seamless, how much pressure can the galvanized pipe withstand?

Generally, the pressure of water deficiency and gas transmission pipe is, the pressure of seamless steel pipe is, the thickness of the steel pipe is different, and the pressure is also different. The Lingfang pipeline is generally 6 kg of differential pressure, and there are also special requirements of 8 kg and 16 kg. GB longitudinal welded steel pipe (that is, the kind of inch, some are galvanized pipes), generally the most used high pressure is 10 kg, according to what I forgot (you can check the big hardware manual).

Buried fire pipes are generally seamless, and galvanized steel pipes can withstand about 20 kg. Generally speaking, it is 6 meters long, but some are also based on the customer's rolling length, which is not easy to calculate. Formula:

Wall thickness* (outer diameter - wall thickness) hot-dip galvanized pipe is to make the molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first, in order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an aqueous solution of ammonium chloride or zinc chloride or ammonium chloride and zinc chloride mixed in an aqueous solution tank, and then sent to the hot-dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.

The hot-dip galvanized steel pipe matrix of Yanchai undergoes a complex physical and chemical reaction with the molten plating solution to form a corrosion-resistant and compact zinc-iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix, so it has strong corrosion resistance.

Hello dear, the pressure of the water and gas transmission pipe is megapascals, and the pressure of the seamless steel pipe is megapascals. Galvanized pipe, also known as galvanized steel pipe, is divided into hot-dip galvanizing and electro-galvanizing, hot-dip galvanized layer thick, with uniform coating, strong adhesion, long service life and other advantages. The cost of electro-galvanizing is low, the surface of the table car is not very smooth, and the corrosion resistance of its pure rubber body is much worse than that of hot-dip galvanized pipe.

Summary. One inch galvanized pipe is generally used at a maximum pressure of 8 kg.

One inch galvanized pipe is generally used at a maximum pressure of 8 kg.

Galvanized steel pipes are divided into cold-dip galvanized steel pipes and hot-dip galvanized steel pipes. In the sixties and seventies, the developed countries in the world began to develop new types of pipes, and successively banned galvanized pipes. China's Ministry of Construction and other four ministries and commissions have also issued a document to prohibit galvanized pipes as water supply pipes since 2000, and the cold water pipes in new residential areas have rarely touched the use of galvanized pipes, and the hot water pipes in some residential areas use galvanized pipes.

Hot-dip galvanized steel pipes have a wide range of applications in fire protection, power and highways.

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Hello dear, there are many different galvanized steel pipes specified in the national standard, and the pressure resistance level of each galvanized steel pipe is also different. The following are the common pressure resistance grades of several national standard galvanized steel pipes:1

GB T 3091-2015 Welded Steel Pipes: The pressure resistance classes for conventional galvanized steel pipes specified in this standard are Class A, Class B, and Class C. Among them, the pressure resistance grade of Class A galvanized steel pipe is not less than 100MPa, the pressure resistance grade of Class B galvanized steel pipe is not less than 200MPa, and the pressure resistance grade of Class C galvanized steel pipe is not less than GB T 13793-2016 Long Itudinally welded steel pipe:

The pressure resistance grades of conventional sedan car galvanized steel pipes specified in this standard are Class A, Class B and Class C. Among them, the pressure resistance grade of Class A galvanized steel pipe is not less than 100MPa, the pressure resistance grade of Class B galvanized steel pipe is not less than 200MPa, and the pressure resistance grade of Class C galvanized steel pipe is not less than GB T 6728-2017 Square steel pipe, rectangular steel pipe and flat oval steel pipe: The pressure resistance level of conventional galvanized steel pipe specified in this standard is Class A, Class B and Class C.

Among them, the pressure resistance grade of Class A galvanized steel pipe in closed shed core is not less than 100MPa, the pressure resistance level of Class B galvanized steel pipe is not less than 200MPa, and the pressure resistance grade of Class C galvanized steel pipe is not less than 300MPa.