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  • Astm Standard St37 Hollow Tube Square 2.5 Inch Galvanized Steel Tubing

    Astm Standard St37 Hollow Tube Square 2.5 Inch Galvanized Steel Tubing

    Galvanized square pipe The molten metal reacts with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot dip galvanizing is to first pickling the steel pipe, in order to remove the iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Most of the processes in the north adopt the zinc replenishment process of galvanized belt direct coil pipe.

    Cold galvanized pipe: galvanized pipe cold galvanized is electric galvanized, galvanized amount is very small, only 10-50 grams per square meter, its own corrosion resistance is much different than hot galvanized pipe. Regular galvanized pipe production plants, for quality, most do not use electric galvanizing (cold plating). Only those small enterprises with obsolete equipment use electric galvanizing, of course, the price is relatively cheap.

     

  • Factory Wholesale Price Carbon Steel Pipe Square Hollow Section Galvanized Shs Steel Pipe

    Factory Wholesale Price Carbon Steel Pipe Square Hollow Section Galvanized Shs Steel Pipe

    Galvanized square pipe  is electric galvanized, galvanized amount is very small, only 10-50g/m2, its own corrosion resistance is much different than hot galvanized pipe. Regular galvanized pipe manufacturers, in order to ensure quality, most do not use electric galvanizing (cold plating). Only those small enterprises with obsolete equipment use electric galvanizing, of course, their prices are relatively cheap. The Ministry of Construction has formally announced the elimination of cold galvanized pipes with backward technology, and it is not allowed to use cold galvanized pipes as water and gas pipes. The galvanized layer of cold galvanized steel pipe is an electric coating, and the zinc layer is independently layered with the steel pipe matrix. The zinc layer is thin, and the zinc layer is simply attached to the steel tube matrix and easy to fall off. Therefore, its corrosion resistance is poor. In new residential buildings, it is prohibited to use cold galvanized steel pipes as water supply pipes.

  • Factory Price Galvanized Erw Welded Steel Square Tube

    Factory Price Galvanized Erw Welded Steel Square Tube

    Galvanized square pipe  is divided into cold galvanized steel pipe, hot galvanized steel pipe, cold galvanized steel pipe has been banned, the latter is also advocated by the state can be used temporarily. In the 1960s and 1970s, the developed countries in the world began to develop new types of pipes and gradually 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 from 2000, the cold water pipes in the new community have rarely used galvanized pipes, and the hot water pipes in some communities use galvanized pipes. Hot-dip galvanized steel pipe has a wide range of applications in fire, power and highway.

  • Hot Rolled Low Carbon  A36 Steel Sheet

    Hot Rolled Low Carbon A36 Steel Sheet

    Hot Rolled Steel Sheet is a European standard carbon steel plate for pressure vessels, which is a high-performance alloy material. EN10028 standard is implemented. 16Mo3 steel can be used in the manufacture of boilers and pressure vessels. 16Mo3 steel plate has good heat resistance and corrosion resistance. 16Mo3 steel plate materials can be used in the manufacture of heat exchangers, reaction vessels, pressure heads and pipe fittings.

  • Wholesale Prime High Quality Q235 Hot Rolled Steel Sheets

    Wholesale Prime High Quality Q235 Hot Rolled Steel Sheets

    Hot Rolled Steel Sheet  is a type of steel with a carbon content of less than 2.11 percent and no metal elements are deliberately added, and it can also be called carbon steel or carbon steel. In addition to carbon, it has a small amount of silicon, manganese, sulfur, phosphorus and other elements, the higher the carbon content, the better the hardness, the better the strength, but the plasticity will be worse.

  • Low Price Q195 Q345 Q346 Q235 High Carbon Steel Sheet for Building

    Low Price Q195 Q345 Q346 Q235 High Carbon Steel Sheet for Building

    Hot Rolled Steel Sheet  refers to carbon steel with carbon content less than 0.8%, which contains less sulfur, phosphorus and non-metallic inclusions than carbon structural steel, and has better mechanical properties.

  • Prepainted S320 GD Galvanized Steel Coil (PPGI)

    Prepainted S320 GD Galvanized Steel Coil (PPGI)

    PPGI, also known as graffiti roll and hand ledger roll, is a special paper specially used for handwritten graffiti and hand ledger production. Compared with ordinary web paper, color coated paper texture is more soft, delicate, suitable for using a variety of ink writing and illustration, expressive more rich.

  • Dx51D RAL9003 0.6mm Hot Rolled Prepainted PPGI Color Coated Galvanized Steel Coil For Sale

    Dx51D RAL9003 0.6mm Hot Rolled Prepainted PPGI Color Coated Galvanized Steel Coil For Sale

    The product obtained by coating the organic coating on the PPGI is the hot-dip galvanized color coated plate. In addition to the protective effect of zinc, the organic coating on the surface also plays a role in isolating protection and preventing rust, and the service life is longer than that of the hot galvanized sheet. The zinc content of hot-dip galvanized substrate is generally 180g/m2 (double-sided), and the maximum galvanizing amount of hot-dip galvanized substrate for external construction is 275g/m2.

  • Hot Rolled Color Coated Coil / PPGI Steel Coil RAL 9002 For Building Materials

    Hot Rolled Color Coated Coil / PPGI Steel Coil RAL 9002 For Building Materials

    PPGI  is a product of hot galvanized plate, hot aluminum plated zinc plate, electrogalvanized plate, etc., after surface pretreatment (chemical degreasing and chemical conversion treatment), coated with one or several layers of organic coating on the surface, and then baked and cured. Because coated with a variety of different colors of organic paint color steel coil named, referred to as color coated coil.

  • Sus 201 202 204 SS 0.3mm 0.5mm 0.7mm 0.8mm 1mm Stainless Steel Wire

    Sus 201 202 204 SS 0.3mm 0.5mm 0.7mm 0.8mm 1mm Stainless Steel Wire

    Stainless steel wire is a variety of silk products of different specifications and models made of stainless steel, and the cross-section is generally round or flat. Common stainless steel wires with good corrosion resistance and high cost performance are 304 and 316 stainless steel wires.

  • Manufacturer Supply High Quality ASTM 408 409 410 416 420 430 440 Drawn Stainless Steel Wire

    Manufacturer Supply High Quality ASTM 408 409 410 416 420 430 440 Drawn Stainless Steel Wire

    Stainless steel wire is a variety of silk products of different specifications and models made of stainless steel, and the cross-section is generally round or flat. Common stainless steel wires with good corrosion resistance and high cost performance are 304 and 316 stainless steel wires.

  • AISI ASTM 1mm 1.2mm 1.5mm 2mm 301 302 303 304 304L 309 310 310S 316 316L 321 Stainless Steel Wire

    AISI ASTM 1mm 1.2mm 1.5mm 2mm 301 302 303 304 304L 309 310 310S 316 316L 321 Stainless Steel Wire

    Stainless steel wire is a variety of silk products of different specifications and models made of stainless steel, and the cross-section is generally round or flat. Common stainless steel wires with good corrosion resistance and high cost performance are 304 and 316 stainless steel wires.

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