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galvanized steel pipe, also known as black steel pipe, is a metal pipe composed of carbon and iron. depending on the purpose and desired properties (and price) of the finished product, other elements such as silicon and manganese can be included in the composition. zinc is commonly used to galvanize or coat these metal pipes. the process of galvanizing steel pipe involves dipping the metal pipe into a bath containing molten zinc at 450 degrees fahrenheit. after a few minutes, the hot-dip galvanizing process is complete and the final product is known to en (european standards) or astm (american society for testing and materials) standards, depending on where it is manufactured.

stainless steel is an alloy of iron with a minimum of 10.5% chromium. chromium produces a thin layer of oxide on the surface of the steel known as the passive layer. this prevents any further corrosion of the surface. increasing the amount of chromium gives an increased resistance to corrosion.

304l stainless steel coil is mainly used in automobile accessories, hardware tools, tableware, cabinets, medical appliances, office equipment, weaving, handicrafts, petroleum, electronics, chemicals, textile, food, machinery, construction, nuclear power, aerospace, military and other industries.

seamless pipe, as the name suggests, is a pipe without a seam or a weld-joint. seamless steel pipe is made from a solid round steel ��billet�� which is heated and pushed or pulled over a form until the steel is shaped into a hollow pipe.

seamless steel pipe is a kind of hollow section, no joints around the strip of steel.? first, the thicker the wall thickness of the product, the more economical and practical it is, the thinner the wall thickness, its processing costs will rise substantially; secondly, the process of the product determines its limited performance. generally, the precision of seamless steel pipe is low: uneven wall thickness, low internal surface brightness, high measuring cost, and the internal surface and pitting and black spots are not easy to remove; third, its detection and shaping must be processed offline. therefore, it embodies its superiority in high pressure, high strength and mechanical structure materials.

304l stainless steel pipe is mainly used in automobile accessories, hardware tools, tableware, cabinets, medical appliances, office equipment, weaving, handicrafts, petroleum, electronics, chemicals, textile, food, machinery, construction, nuclear power, aerospace, military and other industries.

ppgi is galvanized color plate, ppgl is galvanized color plate, both are color plates, the substrates are different, one is galvanized structure, the other is galvanized structure, the substrate is different, which determines the difference in performance. dc01 galvanized steel coil is used for automobiles, sanitary ware, food machinery, pressure vessels, nuclear power, chemical equipment, elevators, rail transit, machinery manufacturing, structural piping, and architectural decoration.

sa516gr. 70 is widely used in petroleum, chemical industry, power station, boiler and other industries to make reactors, heat exchangers, separators, spherical tanks, gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, high-pressure water pipes of hydropower stations, water turbine shells and other equipment and components.