Changsha Xiangjia Metal Materical Co., Ltd.

Galvanized pipes , once a common choice for plumbing systems, are now being scrutinized due to the myriad of problems they can cause. While they may have served their purpose for decades, the limitations of galvanized pipes can lead to significant issues in your home's plumbing. In this post, we will explore the common problems associated with galvanized pipes, including low water pressure, uneven distribution of water, discoloration, and leaks. Low Water Pressure One of the most immediate concerns with galvanized pipes is low water pressure. Over time, corrosion can build up within the pipe, restricting the flow of water. This restriction can result in noticeable differences throughout your home. If you've experienced a reduction in water pressure, it could very well be linked to your galvanized plumbing system. Uneven Distribution of Water Another issue frequently associated with galvanized pipes is uneven water distribution. You might find that some taps in your home deliver...

Hot dipped galvanized pipes   are an essential component in various industries, offering superior corrosion resistance and extended service life. This process involves a chemical reaction where molten metal interacts with the iron substrate to create an alloy layer, ensuring a robust bond between the substrate and the coating. In this article, we will explore the process of hot dipping, the benefits it provides, and the key parameters that define the quality of galvanization. The Process of Hot Dipping The hot dipping process starts with acid cleaning the steel pipes. This critical step removes the layer of iron oxide from the surface, preparing it for effective galvanization. After the acid pickling, the pipes undergo a washing operation in a solution that may include ammonium chloride, zinc chloride, or a combination of both. Once cleaned, the pipes are immersed in a hot dip galvanizing bath. During this immersion, a series of complex physical and chemical reactions occur between...

During production of   galvanized rectangular steel pipe , the steel is rolled into a square shape, bent and welded, and then galvanized. Thanks to galvanization, these square pipes can withstand even the most adverse weather conditions - especially moisture - for a long time. Galvanized rectangular 4-sided pipes are suitable for many indoor and outdoor applications. Whether in your own home, apartment or neighbor's garden, our galvanized steel rectangular pipes are used in many commercial sectors. Galvanized rectangular steel is very stable due to its geometry and is therefore suitable as a modern & versatile structural element for numerous professional as well as hobbyist applications in the outdoor and indoor areas - for example: for stands and exhibition stands for balustrades on balconies, terraces and stairs for the skeleton construction of tables, shelves, benches and other furniture in the construction of machinery and equipment Changsha Xiangjia Metal Materical Co., Lt...

According to national standards, the galvanized layer thickness of   galvanized pipes   has strict requirements. Let’s take a look together! The thickness of the galvanized layer of galvanized pipes is based on the environment and requirements of its use. According to national standards, the galvanized layer thickness of galvanized pipes should meet the following criteria: 1. For workpieces with a thickness ≥ 6 millimeters, the average galvanized layer thickness should be greater than 85 micrometers. 2. For workpieces with a thickness less than 6 millimeters but greater than 3 millimeters, the average galvanized layer thickness should be greater than 70 micrometers. 3. For workpieces with a thickness less than 3 millimeters but greater than 1.5 millimeters, the average galvanized layer thickness should be greater than 55 micrometers. 4. For workpieces with a thickness less than 1.5 millimeters, the local galvanized layer thickness should be greater than 45 micrometers. It is n...

In the 1960s and 1970s, developed countries began to develop new material pipe to replace   galvanized pipes . Cold-dip galvanized pipes have been banned in China, and hot-dip galvanized pipe has been prohibited to used as water supply pipes since 2000. Galvanized pipes are no longer used in cold water pipes in newly built communities, but some used for hot water supply pipe. Galvanized steel pipe is a welded steel pipe with a hot-dip or electro-galvanized layer on the surface. Galvanizing can increase the corrosion resistance of steel pipes and prolong their service life. Galvanized pipes are widely used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially offshore oil fields, and oil heaters and condensation pipes for chemical coking equipment. Pipes for coolers, coal distillation washing oil exchangers, trestle piles, and support pipes for mine tunnels, etc.

 The formula for calculating the weight of the national standard  galvanized rectangular steel pipe . According to the formula, the amount can be calculated. Let's take a look: 4 x wall thickness x (side length-wall thickness) x 7.85 The numerical value, side length and wall thickness are all in mm, and the numerical value can be substituted into the formula. The result is the weight per meter of the national standard galvanized rectangular steel pipe in grams.  E.g:According to the above formula, the weight per meter of 30mm x 30mm x 2.5mm galvanized rectangular steel pipe can be calculated as: 4 x 2.5 x (30-2.5) x 7.85 = 275 x 7.85 = 2158.75 grams, which is 2.16 kg When the wall thickness and side length are in mm as the unit, 4 x wall thickness x (side length-wall thickness) is calculated as the volume of the rectangular steel pipe per meter length, in cubic centimeters, multiplied by the specific gravity of iron per meter The cubic centimeter is 7.85 grams, which is t...

  Galvanized steel pipe  is one of types of galvanized products, and the product is very complicated. If customers do not know galvanized steel pipes well, there will be many problems when buy. Therefore, it is nessary to know basic knowledge and skills of galvanized steel pipe. Pay attention to the following points when buying galvanized steel pipe: 1. Appearance: There are regulations of industry standards on appearance quality requirements, especially in terms of delamination, scarring, cracks, etc. The regulations are specific, and there are also regulations for geometric deviations in the implementation standards, such as Curvature, side width, side thickness, top angle number, theoretical quality and other items have strict regulations, which can be well reflected in appearance, and are also a very effective basis for distinguishing the quality of galvanized steel pipes. 2. Chemical composition discrimination: It is scientific to distinguish by chemical composition, beca...

With the development of the economy, the demand of galvanized steel pipes increasing day by day. But most of people may not know the precautions for welding  galvanized pipes . The seam must be polished before welding, otherwise will have bubbles, trachoma, false welding, etc. It will also drop the welds brittle and the rigidity.  Characteristics of welding galvanized steel Usually galvanized steel coated with zinc on the low carbon steel, and the galvanized layer is about 20um thick. The melting point of zinc is around 419 ° C and the boiling point is around 908 ° C. In welding, zinc melts into a liquid and floats on the surface of the molten pool or at the root of the weld. Zinc has greater solid solubility in iron, zinc liquid will deeply etch the weld metal along the grain boundary, and low melting point zinc forms "liquid metal embrittlement". At the same time, zinc and iron can form brittle compounds between metals, these brittle phases reduce the plasticit...