Since its introduction to the world market in the 1970s, PPGL COIL has become the most popular steel plate for roofs and walls. PPGL COIL’s hot-dip alloy coating contains 55% aluminum, 43.5% zinc and 1.5% ケイ素, which effectively combines the strength of the steel plate, the corrosion resistance of aluminum

First of all, the place or warehouse where ERW steel pipes are stored should be clean and well-drained, away from factories and mines that produce harmful gases or dust. Weeds and all debris should be removed from the site, and ERW straight seam steel pipe equipment accessories should be kept

This method has the highest productivity and is also the main production method of straight seam steel pipes. The brief production process of this device is to first bend it into a U shape, then press it into an O shape, and then mechanically expand it after welding the inside

Seamless steel pipes are rolled from solid tube blanks after being perforated. The production and manufacturing methods can be divided into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, extruded pipes, 等. さまざまな製造方法に従って. Extruded pipes are divided into seamless steel pipes and welded steel pipes, and seamless steel

Plastic-coated steel pipe is a widely used pipe. It uses a special process to coat the surface of the steel pipe with a layer of plastic to enhance the corrosion resistance and wear resistance of the steel pipe. Plastic-coated steel pipes have a series of advantages and disadvantages, which are

It turns out that the domestic method of expressing the zinc layer thickness of galvanized sheets is directly Z40g Z60g Z80g Z90g Z120g Z180g Z275g. (The amount of galvanizing is a commonly used and effective method to express the thickness of the zinc layer of galvanized sheets.) Domestic standard value

Galvanized corrugated board refers to a steel plate with galvanized surface. Galvanizing is a frequently used cost-effective corrosion protection method. This process uses approximately half of global zinc production