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% silicon, 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, etc. according to different production methods. 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
On July 14, the European Commission issued an announcement, making the first anti-dumping sunset review final ruling on seamless steel pipes originating in China, and decided to continue to maintain anti-dumping measures on the products involved, with tax rates ranging from 29.2% to 54.9%. The products involved are seamless iron
Steel pipes are generally divided into two categories, one is welded steel pipe, and the other is seamless steel pipe. Welded steel pipe, also called welded pipe, is a steel pipe made of steel plates or strips that are welded after being curled and formed. The production process of welded
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