Steel pipe is a general term for all hollow iron pipes.

Welded pipe is made of strip steel, that is, a very long steel plate, although there will be a weld on the surface after welding, stiffening, sizing and straightening. Welded pipe is mainly used for the construction of low-pressure water, gas, oil and steel structures. Welded pipe should not be used in water supply and steam pipes and places with certain pressure.

Galvanized pipe:Galvanized pipe is attached with a layer of zinc on the surface of the welded pipe. Galvanized pipe is divided into hot galvanized and cold galvanized and galvanized belt three kinds of materials, of which hot galvanized pipe is the best corrosion resistance inside the galvanized pipe, suitable for outdoor and some corrosive gases in the plant, the most used place is the fire pipe we know, After the hot-dip galvanized pipe used as a fire pipe arrives at the site, the workers will trim the pipe mouth according to the diameter of the pipe (tapping for the lower caliber pipe, pressing for the large caliber pipe), clean the wall and facade of the pipe after the pipe mouth is trimmed, and then paint. Generally, the fire pipe is bright red. Looking at cold galvanized pipe, cold galvanized pipe is the most thin wall thickness, low cost, mainly used for indoor plant construction without corrosive gas and simple temporary steel structure, the disadvantage is that the corrosion resistance and rust prevention effect is poor. Galvanized strip pipe is a pipe directly produced by very thin galvanized strip steel, which is generally used for temporary enclosures and temporary sheds. The advantage is that the overall temporary plant cost is low, the disadvantage is easy to deform, and the anti-rust strength is low.

Spiral pipe:Spiral pipe, also known as spiral welded pipe, as the name suggests, there is a spiral weld on the surface of his pipe body. The welded pipe is a straight weld in the pipe body, and the spiral pipe is a spiral weld. The upper limit of the caliber of this pipe production is generally the best caliber 219, and the above caliber can be basically 5 meters in diameter. It is often used in municipal heating pipes (inside anti-corrosion treatment, outside insulation), municipal main water supply pipes (inside food-grade anti-corrosion outside anti-corrosion), municipal sewage pipes, temporary steel frame support for engineering Bridges, and the advantage is that the cost is low and the length can be customized according to customer on-site needs. The disadvantage is that the pipe wall is thinner and the weld is more low strength.

Seamless pipe and seamless steel pipe:seamless pipe and seamless steel pipe are called different are seamless pipe body without weld is made of billet or molten steel one-time perforation molding strength is higher, wide range of application, material category (20#.45#.q355B). 27simn, 12cr1movg,15cr1movg,) Mechanical processing, plant and stadium main beam support steel beams, oil, steam, large pressure water pipes, etc. The disadvantage is the high cost.

In summary, each material has its existence and practicality, and the advantages and disadvantages should be selected according to the actual design and use requirements. There is no absolutely good material only the most suitable for the current use of the scene. Customers purchase according to their own needs