Langfang DingYang

China's Stainless Steel Pipe Fittings Industry Is Developing Rapidly and Widely Used

fittingflange | 21 August, 2018 14:31

With the rapid development of China's economy, all walks of life have achieved fairly good development. Competition in the stainless steel pipe fittings market is also increasing, as a downstream industry in food, pharmaceutical processing and packaging industry, the impact of stainless steel pipe fittings is also increasing. Stainless steel pipe fitting originated in 1980s, and is a new industry. After 20 years of exploration and exploration, it has begun to take shape. Stainless steel pipe fittings are a kind of pipe fittings, mainly made of stainless steel. With the development of economy, the application range of stainless steel pipe fittings is more and more extensive. The analysis of corrosion resistance of passivation layer on stainless steel surface, combined with advanced production technology and equipment application, the stainless steel clamp produced not only meets the daily production and living needs, but also fills the domestic blank. In the past ten years, with the rapid development of China's macro-economy, the stainless steel pipe fittings industry in China has developed rapidly. Stainless steel threaded pipe fitting are more and more popular in life and industrial applications because of their environmental protection and safety, playing an important and irreplaceable role. There is bound to be fierce competition in the huge market. Over the past few years, there are too many enterprises in the industry, and the competition in product sales is too intense. Now society is an era of information explosion. It is unavoidable for enterprises to encounter competitors in their products. Competition exists in the industry, which is a good thing for some enterprises. Because of competition, companies improve product quality and service quality, and consumers get better or more consumption and services with less money. While the industry is developing and advancing, the market is also winning the competition in the industry. For some competitive large enterprises, through competition, the scale of enterprises becomes larger and larger, and the popularity becomes higher and higher. With the rapid development of the stainless steel forged pipe fittings market in China, the application and R&D of its core production technology will become the focus of attention of enterprises in the industry. Stainless steel pipe fittings manufacturing enterprises want to occupy a favorable position in the market, it is necessary to constantly explore new application areas, strengthen brand upgrade, in order to cope with fierce competition.

An Important Part of Pipe Fitting Manufacturing

fittingflange | 09 August, 2018 17:29

The heat treatment process of butt welded pipe fitting is an important part of pipe fittings manufacturing. Through the heat treatment steps of heating, heat preservation and cooling, the processing hardening, residual stress and metal deformation defects produced in the forming process are eliminated, and the metal structure and properties of the tubes after forming are changed, the state before the deformation processing is restored or the performance is improved and raised. The commonly used heat treatment equipment is a reverberatory furnace, electric furnace, and so on. The usual control mode is that the thermocouple in the furnace is connected to the control device of a temperature time automatic recorder through a sensor. There are different regulations for heat treatment in different product standards. Not all deformed tubes are heat-treated. Usually, when the final forming temperature is not less than 723 degrees C (recrystallization temperature) for a tube of low carbon steel, the heat treatment can not be done, because the final state of the tissue is basically a normalizing state under this temperature, below this temperature or higher than 980. Heat treatment should be carried out; heat treatment of alloy steel or stainless steel pipes, whether cold or hot forming, should be carried out.

Forming Characteristics of Flange Parts

fittingflange | 03 August, 2018 10:16

In order to avoid the flange type axisymmetric parts cracking in extrusion and improving the forming limit, the traditional hot extrusion process is considered, and the radial local loading is provided to change the stress state in the process of stainless steel flange deformation and improve the plastic deformation ability. In the actual forming, the side slider is mainly used to contact the blank, and the radial loading is provided by connecting the hydraulic transmission device with the side slider. In the process of blank extrusion by punch, the blank is subjected to radial pressure at the same time. Under the condition of lateral pressure holding, the plastic deformation of carbon steel flange zone is increased. The most important thing for stainless steel is to keep its surface clean. Once it has been corroded, the surface of the stainless steel will change its appearance, not so clean. So those that have the ability to corrode stainless steel must be kept away from production. Whether acidic or alkaline gas or liquid, keep away from the production environment.

Problems Needing Attention in Using Stainless Steel Pipe Fittings

fittingflange | 28 July, 2018 16:20

For users, it is not only necessary to pay attention to the selection and purchase of stainless steel pipe parts at the purchase stage, but also ensure that the quality and applicable butt welded pipe fittings are purchased. It is also necessary to operate in accordance with the correct process and method when installing piping parts, so as to ensure that the piping parts achieve very good installation results. In addition, we need to pay attention to the following problems in the process of using the pipeline, so as to optimize the use effect of the pipeline, so as to ensure that the pipeline has a good application effect. Question 1: Pay attention to the structural state of pipe fittings. In the process of using stainless steel pipes, we should pay attention to the structural state of the pipes and see if there are cracks in the structure of the road parts. If they are found to have such phenomena, it is necessary to repair the pipes in a timely manner. If it can not be repaired, it is necessary to replace the new threaded pipe fittings . Problem 2: Pay attention to the installation status of pipeline fittings. In view of the normal use of stainless steel pipe fittings, not only the normal structure state is required, but also the installation state is completely correct. Therefore, in the process of using piping parts, we should also pay attention to the installation status of the road parts, and make timely adjustments when they are in poor condition. Use problem three: use correctly. The use of stainless steel pipe fittings is also like the use of many other products. You need to ensure that you use them correctly and your performance will be very good.

Non Corrosion Factors of Stainless Steel Flanges

fittingflange | 25 July, 2018 17:21

Stainless steel flanges will not corrode, pitting, rust or wear. Stainless steel is also one of the most powerful materials for building metal materials. Because stainless steel has good corrosion resistance, it can make structural components permanently maintain the integrity of engineering design. The chrome stainless steel stamping flange also sets mechanical strength and high extensibility in one body and is easy to make parts. It is satisfied with the needs of architects and structural designers. All metals react with oxygen in the atmosphere and form oxide films on the surface. Iron oxide formed on ordinary carbon steel continues to oxidize, causing corrosion to expand and eventually form holes. Paint or oxidizing metals can be used for plating to ensure the surface of carbon steel. As is known to all, this protection is only a thin film. Stainless steel flanges are widely used in oil, chemical, nuclear power plants, food manufacturing, building, shipbuilding, paper, medicine and other industries. It has different use in different industries and shows the value of use in various industries.

Precautions for Flange Purchase

fittingflange | 19 July, 2018 11:28

Flange is the benchmark for determining the nominal pressure level of pipelines. According to the previous introduction, there are many kinds of carbon steel flanges . Different types of stainless steel flange have different sealing performance and are suitable for different occasions. Here we discuss only how to choose different types of flanges for reference only. A. Flange type The structure type pipe flange is divided into six basic types according to the connection with the pipe: flat welding, butt welding, socket welding, loosening sleeve, threaded flange and whole flange. The sealing face type flange sealing surface has five kinds: full plane, convex surface, concave convex surface, tenon groove surface, circular groove surface and so on. Flanges code Different standards of flange sealing surface and type of name, code name slightly different. See table 6-1 and table 6-2. Table 6-1 seal face name and code comparison table Serial number SH 3406-96 HG20592 to 20635-97 JB/T74 to 90-94 1 Full plane (FF) full plane (FF) plane (FF) 2 Convex surface (RF) raised surface (RF) convex surface (RF) 3 Concave convex surface (MF) concave convex surface (MFM) concave convex surface concave convex surface (MF) 4 Tenon groove face (TG) tenon groove surface (TG) tenon groove face groove (TG) 5 Tenon groove face (TG) ring connection surface (RJ) ring connection face ring connection surface (RJ)

Strength of Large Stainless Steel Flanges

fittingflange | 16 July, 2018 11:13

First of all, large stainless steel flanges should have enough strength, and they must not be deformed when fastened. Flange sealing surface should be neat and clean. When installing, the oil stain and rust stains should be carefully cleaned. Large stainless steel flange connection is easy to operate and can withstand great pressure. Flange connections are widely used in industrial pipelines. In the family, the diameter of the pipe is small, and it is low pressure, so the flange connection is not visible. If in a boiler house or production site, there are flanged pipes and equipment everywhere. Second, the large stainless steel flange gasket should have good oil resistance and anti-aging performance, as well as better elasticity and mechanical strength. The installation should be based on the shape of the joint, with different sections and dimensions of the gasket, and placed correctly. Third, the tightening force of large stainless steel flanges should be uniform and the compression of pads should be controlled at 1/3 left.

Heat-resistant Function of Carbon Steel Flange

fittingflange | 13 July, 2018 11:17

High impact: as the common impact strength is significantly improved over other solid wall tubes, the ring stiffness is 1.3 times that of the solid wall. Long service life: the pipe in the extra use of temperature and pressure, the use of life to reach more than 50 years, anti ultraviolet, anti radiation, so that the product never fade. Good corrosion resistance: in addition to a few hydrogenated agents, it can endure a variety of chemical medium corrosion. The stainless steel flange has excellent acid resistance, alkali resistance, corrosion resistance, no rust, no corrosion, no bacteria, no electrochemical corrosion. Good thermal insulation: because of low thermal conductivity of materials, the thermal conductivity of 20 degrees centigrade is 0.21-0.24W/mk, much smaller than steel pipe (43-52W/mk), purple steel tube (333W/mk), so the PP-R tube has good thermal insulation.
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