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According to the difference of the processing mode, the galvanized fall into cold galvanized and hot galvanized. Normally, the highway guardrail is hot galvanized products.The difference between hot galvanizing and cold galvanizing:

A principle of hot dipped galvanized: galvanized iron to clean clean, then solvent treatment, drying after immersed in liquid zinc, iron and zinc layer of molten zinc reaction produce an alloying, the process for degreasing, washing, pickling, helps the plating - drying - hot dip galvanized, separation, cooling passivation.

he surface of the corrugated guardrail is divided into two forms, hot galvanizing and plastic sprayed . Spray-plastic guardrails are sprayed on the product on the basis of hot galvanizing, which is better than ordinary hot galvanizing for the anti-corrosion effect, and also has a beautiful effect. The anti-corrosive age of ordinary hot galvanizing is about 20 years, but after it is sprayed, it can reach 30 years of anti-corrosion. This is more suitable for rainy, windy and seaside areas.

orrugated guardrail posts are made of hot galvanized columns with the plate, and wooden post is used as columns. Shiteng post is the hot galvanized post. With the development of the technology, the shape of the column of the corrugated guardrail is also diversified. Normally the W - beam guardrail use round post

In the daily use of collision guardrails, the use of W-beam hot dipped galvanized guardrail is the most widely used. W-beam Hot dipped galvanized guardrail can be used for highway and general road (provincial road, county road, town road, etc.) anti-collision, factory area, forest park and farm construction.

Metal corrugated culvert pipe is also called metal corrugated pipe culvert, corrugated pipe culvert, corrugated culvert pipe or steel corrugated culvert pipe,

Galvanized C Purlin Machine The components of the equipment: Decoiler 1set Main Machine for roll forming 1set Cutting System 1set Hydraulic Station 1 set Electric Control System（PLC）1 set Output Table 1set

Metal corrugated culvert pipe is also called metal corrugated pipe culvert, corrugated pipe culvert, corrugated culvert pipe or steel corrugated culvert pipe,

Steel purlins are necessary for pre engineered steel industrial buildings, and some residential building as well, and various kinds of c/z purlin roll forming machines have been developed to produce C/Z/U steel purlins, Sigma/M purlins sometimes are also available. In accordance with different requests for C and Z steel purlins, we have specified C purlin roll forming machines for production of C steel sectional channels, Z purin roll forming machines for manufacturing of Z shaped channels and interchangeable C/Z purlin roll forming machines which are designed to produce both C and Z steel purlins without replacing any rolling tools or cutting dies. They are mostly galvanized or cold rolled steel strips from feeding, punching for holes, bending and cutting.

The hydraulic riveting machine is one of the essential machines for the installation of ventilation construction engineering. It's widely used for riveting angle steel flange and galvanized sheet metal. With high production efficiency,

Downspout roll forming machines are producing various down pipes from galvanized steel, pre-painted steel or aluminum. We have two types of downspout roll forming machine, one is industrial grade downspout roll forming machine, which is larger and heavier. The other is portable downspout roll forming machine, which could take to the job on site. Pipe size is square pipe 2x3, 3x3, 3x4, or 4x5, both square corrugated pipe and plain square are available, and round pipe size is from 50mm diameters to 150mm diameters.

The three-wave guardrail usage: express road, provincial road, county side road, township road, mountain road, seaside road and so on.The specification of the three corrugated beam is 4320 mm, the wave width is 505 mm, the wave height is 85mm and the plate thickness is 4mm.

In road construction, it has been more than 100 years since the use of metal corrugated culvert pipe to replace reinforced concrete for culvert construction. In 1896, the United States took the lead in the feasibility study of metal corrugated pipe and culvert pipe.

Lock Forming Machine Duct lock forming machine is necessary in duct area because it can produce all kinds of types to meet locking requirements. Standard machine can process 0.5-1.5mm galvanized sheet metal, and our company would specially introduce high-strength rolling reels made of GCr15, a kind of steel which prolongs the machine life by more than 5 times and improve the efficiency dramatically.