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Butt welding flange refers to with a neck and a circular tube transition and pipe butt welding flange. Butt welding flange is not easy to deformation, good sealing, wide application, suitable for pressure or temperature fluctuations of pipeline or high temperature, high pressure and low temperature pipes, advantage is that the price is cheaper, nominal pressure no more than 2.5 MPa; Also used to transport is expensive, inflammable, explosive medium pipeline, nominal pressure around PN16MPa. Butt welding flange connection is convenient to use, can withstand greater pressure. The butt welding flange’s gasket material according to the different levels of pressure is different also. From low asbestos mat, high pressure pads to metal pads. Butt welding flange widely used in machinery industry. Butt welding flange of the wide range of USES, use according to the characteristics of different, more than in the mild conditions of medium, such as suit low circulating water, the purification of compressed air, and it has the advantage of the price is cheaper. The application range of the butt welding flange: 1, the extension of artifacts: for example, wire rod, steel, strip steel, profile steel, boiler steel pipe, oil and gas pipe butt welding. 2, the ring artifacts of butt welding, such as car rim and bicycle, motorcycle rims of butt welding, butt welding of various link, etc. The compound 3, parts: simple rolling, forging, stamping or machined parts butt into complex parts, in order to reduce costs. Such as car direction shaft housing and rear axle shell butt welding, butt welding of various connecting rod, rod, as well as special parts of butt welding, etc. 4, the butt welding of dissimilar metal: can save precious metals, improve product performance. Such as work part of the tool (HSS) and tail (medium carbon steel butt welding, internal combustion engine exhaust valve head (heat resistant steel) and tail (steel) butt welding, butt welding of aluminum copper conductive coupling, etc. Butt welding flange main application environment is appropriate, need to be determined according to the specific situation, to ensure the specific use of butt welding flange value and performance, withstand high temperature and high pressure. Butt welding flange is suitable for the nominal pressure of not more than 2.5 MPa steel pipe connection. Butt welding flange’s sealing surface can be made into smooth type, concave and convex type and mortise type 3 kinds. Smooth type butt welding flanges are the biggest, the other two ways of butt welding flange in use is also common. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Butt welding elbow is one of the pipe fittings, elbow pipe fittings are used in the process of pipeline engineering construction is becoming more common, this is largely due to its forming good, strong compression ability, simple welding form etc., to ensure the bearing capacity of the pipe, so in the process piping engineering especially in petrochemical and flammable and explosive pipe of high temperature and high pressure, the rational use of pipe and pipe fittings itself quality directly plays an important role. Butt welding elbow is applied to the butt welding of ring artifacts such as car rim and bicycle, motorcycle rims of butt welding, butt welding of various link, etc. Butt welding elbow is applied to parts of compound will be roughly rolling, forging, stamping or machined parts butt into major parts of the eve, with a low completion. Such as car mark purpose shaft shell and the rear axle shell butt welding, butt welding of various connecting rod, rod, as well as special parts of butt welding and so on. But in the process of application, prone to all kinds of problems: A, the uneven wall thickness of pipe fittings In pipe wall thickness uneven occurs mainly at the site of the largest pipe deformation. Such as wall thickness in other parts of the bend of the back; The nozzle and the pipe body wall thickness. Specified in the relevant national standards. Check for such problems, using measuring tools such as caliper, often difficult to find, at this time only can be measured using ultrasonic thickness gauge. Second, the hardness of paint Butt welding elbow hardness of overweight problems, mainly due to the heat treatment after forming process The solution is to use the correct heat treatment process for an additional heat treatment. Three, produced by the defects in materials and processing The defect of butt welding elbow harm the safety of the plant is the largest. Check up and more troublesome. Factors of defects are more complex, more it is a combination of material itself defects and processing manufacturing process and heat treatment process of defects caused by the incorrect. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

The stainless steel flange has the threaded connection flange and the welding flange, it is a kind of dish shaped parts, in the pipeline engineering is the most common, the flange is used in pairs. In the pipeline project, the flange is mainly used for the connection of pipes. In the need to connect the pipe, a variety of installation of a flange plate, low pressure pipe can be used wire connection flange, 4 kg or more pressure on the use of welding flange. Low voltage and small diameter wire connecting flange, high pressure and low pressure and large diameter are welded flange, the thickness of the flange plate of different pressure and the connecting bolt diameter and the number is different. Stainless steel flange is not to produce corrosion, pitting, corrosion or wear, is one of the highest strength of the materials used in building materials. Because the stainless steel has good corrosion resistance, so it can make structural components to maintain the integrity of Engineering design. Chromium stainless steel flange is set high mechanical strength and extensibility in a body, easy processing and manufacturing of parts, and can be satisfied with architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on the surface. In the maintenance of the stainless steel flange is need to pay attention to some problems: long time use of stainless steel flange should be regularly inspected, often on the exposed surface shall be kept clean and remove dirt, neatly stored in the room ventilated dry place, stacked or open storage is prohibited. Keep dry and ventilated stainless steel flanges, maintain clean and tidy, with the accurate storage storage method. When the installation is installed, the stainless steel flange can be directly arranged on the pipeline according to the connection mode, and the installation is carried out according to the position of the use. Under normal circumstances, can be installed in any location, but it is necessary to facilitate the operation of the test, pay attention to the flow of stainless steel flange should be the flow of vertical valve below the upper flow, stainless steel flange can only be installed horizontally. Stainless steel flange in the installation should pay attention to sealing, prevent leakage phenomenon, affecting the normal operation of the pipeline. In order to extend the service life of stainless steel flange taps, and improve the machining quality of the screw threads, in which processing and production should pay attention to some matters needing attention: in the thread surface is coated with titanium nitride coating, can significantly improve the tap wear resistance, heat resistance and lubricity; appropriate to increase the quantity of shovel taps back. But should pay attention to, such as shovel back amount is too large, to have the chip tap into after angle phenomenon in the back of the knife, and tapping thread finish; appropriate to increase the tap before the angle, but it should be noted that, such as taps angle is too large, in the back of the knife easily lead to taps collapse edge and tapping thread edge. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Flat welding flange and pipe connection: is to insert the pipe flange hole to the appropriate position, then take welding. Flat welding flange is suitable for the pressure level is lower, the pressure fluctuation, the vibration and shock were not serious in the pipeline system. Flat welding flange advantages in flat welding flange welding assembly for more easily, and the price is cheaper, thus has been widely used. The Differences between Flat Weld Flange and Butt Weld Flange The flat weld flange applies to the pipes with nominal pressure no more than 2.5Mpa, such like the cycling water pipe and low pressure air pipe. It has the sealing face of FF, MFM, and TG types, and the FF is most popular. Its biggest trait is the low price. The butt weld flange has the compact structure, high rigidity and high strength, so that it can withstand the drastic temperature fluctuation and repeated bending. The butt weld flange with the nominal pressure from 0.25Mpa to 2.5Mpa mostly adopts the MFM type sealing face. The welding methods are different. The flat weld flange has a socket RF with the diameter bigger than the pipe, so that the pipe can be inserted and welded inside. The butt weld flange’s wall thickness and diameter are required to be the same with the pipe, so that both the inside and outside of the weld seam can be welded up. The sealing principle of flat welding flange Two seal face mutual extruding flange gasket bolt and form a seal, but it also led to the destruction of the seal. In order to keep the seal, will have to maintain a huge bolt force, therefore, the bolt will be bigger. And a bigger bolt will match the bigger nut, which means the larger diameter bolts to create conditions to tighten the nut. However, the diameter of the bolt, the greater the applicable flange will become bent, the only way is to increase the flange part of the wall thickness. The whole device will requires a great deal of the size and weight, this in the offshore environment has become a special problem, because in this case the weight of people must concern has always been the main problem. And, ultimately, flat welding flange is an invalid sealing, it needs to be 50% of the bolt load for dummy blocks, and used to keep the pressure load is only 50%. Attention to the production of flat welding flange 1, the production of flat welding flange plate should be via ultrasonic testing, with no defects, guarantee the good quality and performance problems, according to certain quality requirements of the production and inspection, ensure the quality of the production and use of the steel plate no problem; 2, should be along the direction of steel rolling cut into strips, the bending welded into a circular ring, and to form the surface of the steel ring cylinder. In the production of flat welding flange shall not adopt steel plate machining directly into bring neck flange, adoption of a certain craft production and processing. Flat welding flange during welding using single continuous welding, flange welding area circumferential weld cooling to heating part under toroidal welding shrinkage is very big, the further expansion of the deformation of the flange in the ring to form irregular ellipse phenomenon, local concave and convex part. At the same time due to the welding contraction force smaller flange inside the perimeter, and flange lateral due to low temperature, weld heat input effect is small, good rigidity, basic no shrinkage; So that flange section, forming flange face significant reverse phenomenon, at the same time cause the flange bolt hole is no longer the central axis parallel to the cylinder axis. Flip the force, it turns out, it is very big, at the completion of flange welding groove and the cylinder of after, still can’t make the deformation of any change. Flat welding flange of main design drawback is that it does not guarantee no leakage. This is insufficient on its design: the connection is dynamic, and such as thermal expansion and the ups and downs of cyclic load can create the flange surface between the moving, affect the function of the flange, to destroy the integrity of the flange is damaged, eventually lead to leakage. Any product may not have the flaw, not just the lack of control products to a minimum as far as possible, so the company in the production of flat welding flange to improve the performance of the product as far as possible, make it play a biggest role. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

The butt welding elbow and pipe connections such as welding, flange connection, socket welding connection. The butt welding elbow in the actual production, in strict accordance with the certain process and scale of production, strict implementation of international standards, is how much pressure to produce more thick, avoid by all means to cut corners, carried out in accordance with the normal way of process production, make sure the butt welding elbow can show good value and role in the practical work, can fully reflect certain characteristics and value. Butt welding elbow general is full of a lot of products, its length, roughness can be customized according to customer requirements, the largest diameter can produce up to 2020. In sewage treatment and other needs of large diameter bend place plays a huge role. Butt welding elbow the basic process is: first, a cross section welding for polygon multi ring shell or blockade on both ends of multi fan shell, internal filled with medium pressure, with inner pressure and internal pressure under the action of cross section of polygonal gradually into a circle, finally become a circular ring shell. According to the requirements, a circular ring shell can be cut into four 90 ° bend or six 60 ° elbow or other specifications of the elbow, the process is suitable for manufacturing elbow pitch diameter and any specifications of large elbow bend diameter ratio greater than 1.5, is an ideal way to manufacture largestainless steel elbow. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

A weld neck flange (also known as a high-hub flange and tapered hub flange) is a type of flange. There are two designs. The regular type is used with pipes. The long type is unsuitable for pipes and is used in process plant. A weld neck flange consists of a circular fitting with a protruding rim around the circumference. Generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. Such flanges are suitable for use in hostile environments that have extremes of temperature, pressure or other sources of stress. The resilience of this type of flange is achieved by sharing the environmental stress with the pipe with which it is welded. This type of flange has been used successfully at pressures up to 5,000 psi. Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting. The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces. These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection. This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld). To produce Welding Neck flange’s forging billet in cold forging deformation and strain hardening, the forging die under high load, therefore, need to use the high strength of the forging die and using hard of lubricant to prevent wear and adhesive processing method. In addition, to prevent crack in billet, intermediate annealing when necessary to ensure deformation ability. To keep good lubrication condition, phosphating of billet. In a continuous process with bar and wire rod, and the current of cross section is not lubrication processing, are studying the possibility of phosphating lubrication method is used. Production and processing process of Welding Neck flange Whether a, annealing temperature reaches the temperature. Welding Neck flange processing is commonly take solid solution heat treatment, also is the people of the so-called “annealing” usually, temperature range is 1040 ~ 1120 ℃ (Japan standard). You can also through observing hole of annealing furnace and annealing the flange pipe fittings shall be the state of incandescent, but did not appear to soften prolapse. Second, the Welding Neck flange machining casting furnace water vapor. On the one hand, check whether the furnace material is dry, the first furnace, furnace material must be dry; The second is whether the flange into the furnace pipe residual too much stain, special flange pipe fittings above if there is one hole, don’t slack and went in, or we’ll get the furnace atmosphere all destroyed. Three, furnace body sealing. Welding Neck flange bright annealing furnace should be closed, cut off from the air outside; Adopting hydrogen gas as shielding gas, only a vent is (used to ignite the discharge of hydrogen). Check method can wipe with soap and water in each joint cracks in annealing furnace, look to whether running; One of the most easy to run gas place is where the annealing furnace into the pipe and the pipe, the place of sealing ring particularly easy to wear, often should check in regularly. Fourth, protect gas pressure. Micro holes in order to prevent the Welding Neck flange, protective gas should maintain a positive pressure in the furnace, if the hydrogen gas protection, general requirements above 20 kbar. Five, the annealing atmosphere. Pure hydrogen Welding Neck flanges are generally used as the annealing atmosphere, atmosphere best is more than 99.99% purity, if the other part is an inert gas atmosphere, can also lower purity, but absolutely can’t have too much oxygen and water vapor. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

India Steel 20173rd International Exhibition and Conference for Steel IndustryDate: 4/20/2017 – 4/22/2017Venue: Bombay Exhibition Centre, Mumbai, IndiaINDIA STEEL – 3rd International Exhibition and Conference is a joint initiative taken by the Ministry of Steel, Government of India and Federation of Indian Chambers of Commerce and Industry (FICCI) to provide a platform to all the Participants, Delegates, Business Visitors and other key decision maker from the Steel and other related industry to interact with, and explore new business avenues.  Event news: Website: http://www.indiasteelexpo.in/VenuesBombay Convention & Exhibition Centre (BCEC)Western Express Highway, Goregaon East, Mumbai India Tel: +91-22-6645 0123 http://www.nesco.in/bec.htmlOrganizersFICCI ExhibitionsFederation House Tansen Marg, New Delhi India Tel: +91-011-23738760-70 http://www.ficci.com/

2205 duplex stainless steel is mainly composed of 22% Cr, 3% molybdenum and 5-6% Ni nitrogen composition. It has high strength, better impact toughness and better overall and local resistance to stress corrosion. General properties of stainless steel Compared with 316L and 317L austenitic stainless steel, 2205 duplex stainless steel in the anti-pitting corrosion and corrosion of the better performance, it has a high corrosion resistance, compared with the austenite, its thermal expansion coefficient is lower , Higher thermal conductivity. 2205 yield strength is twice the austenitic stainless steel, this feature allows designers to reduce the weight of the design of the product, so that this stainless steel than 316, 317L stainless steel more price advantage. This stainless steel is particularly suitable for use in the temperature range of -50 ° F / + 600 ° F. Out of range applications should be used with caution, especially when applied to welded structures. The applications of stainless steel Pressure vessels, high pressure storage tanks, high pressure pipes, heat exchangers (chemical processing industry). Oil and gas pipeline, heat exchanger pipe fittings. Sewage treatment system. Pulp and paper industry classifiers, bleach equipment, storage processing systems. High-strength corrosion-resistant environment of the rotary shaft, press roll, blades, impeller and so on. Food processing equipment. Corrosion resistance of stainless steel Uniform corrosion Due to the Cr content (22%), molybdenum (3%) and nitrogen content (0.18%), the corrosion resistance of 2205 duplex stainless steel is better than 317L and 316L stainless steel in most environments. Partial corrosion resistance 2205 in the Cr, molybdenum and nitrogen content in the oxidizing and acidic solution, the point of corrosion and corrosion has a strong resistance. The corrosion curve in a sulfuric acid solution containing 2000 ppm of chloride was 4 mpy (0.1 mm / yr) Anti-stress corrosion The dual phase microstructure of stainless steel improves the corrosion resistance of stainless steel. At a particular temperature, oxygen, tension and chloride in the presence of austenitic stainless steel will occur chloride stress corrosion. Corrosion resistance 2205 duplex stainless steel has a very good anti-corrosion fatigue strength, especially suitable for processing equipment, effectively avoid susceptible to corrosion environment and loading cycle. The critical temperature of the etching in 1M NaCl was measured using an AvestaPolarit etch cell The critical temperature of corrosion in the gap of 10% FeCl3.6H2O Uniform corrosion in wet treated phosphoric acid Uniform corrosion of stainless steel Resistance to stress cracking (P = via F = not passed) The chemical composition of stainless steel Average (% by weight) Mechanical properties of stainless steel Mechanical properties at room temperature Mechanical properties of stainless steel at room temperature Mechanical properties at high temperature Mechanical properties of stainless steel at high temperature Physical properties of stainless steel Physical properties of stainless steel structure The chemical composition of 2205 achieves the ideal microstructure 50 α / 50 γ after annealing at 1900 ° / 1922 ° F (1040 ° / 1080 ° C). If the temperature of the heat treatment is higher than 2000 ° F, the composition of the ferrite component may be increased. Like other duplex stainless steel, 2205 duplex stainless steel is susceptible to intermetallic precipitation. The intermetallic phase precipitates between 1300 ° F and 1800 ° F, and the precipitation rate is the fastest at 1600 ° F. The processing of stainless steel Thermoforming We recommend that the forming should be carried out at temperatures below 600 ° F. During the thermoforming process, the entire workpiece should be heated as a whole and should be in the temperature range of 1750 ° F to 2250 ° F. 2205 Duplex stainless steel is very soft at this temperature. If the temperature is too high, 2205 duplex stainless steel is easy to tear. If below this temperature, austenite will break. Below 1700 ° F, the intermetallic phase is quickly formed due to temperature and deformation. After the thermoforming is carried out, it should be immediately annealed at a minimum temperature of 1900 ° F and quenched to restore its phase balance, toughness and corrosion resistance. We do not recommend stress relief, but if this is necessary, the material should be annealed at a minimum temperature of 1900 ° F and then rapidly cooled for water quenching. Cold forming 2205 duplex stainless steel can be cut and cold formed. However, due to its own high strength and hardness of 2205 duplex stainless steel, it is more cold than the austenitic steel, but also because of its high strength, to fully take into account the rebound factor. The heat treatment of stainless steel 2205 Duplex stainless steel should be annealed at a minimum temperature of 1900 ° F and then rapidly cooled for water quenching. This treatment is applied to solid solution annealing and stress relief. Stress relief is carried out at temperatures below 1900 ° F, which can easily lead to the precipitation of harmful metal or nonmetallic phases. Mechanical machinability In the high-speed machine, 2205 duplex stainless steel feed rate and cutting speed and 316L is the same. If the use of carbonized knife, cutting speed and 316L compared to about 20% lower, the performance of machinery and equipment and its components play a key role in this. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Stainless 2017International Stainless Steel Congress and FairDate: 5/17/2017 – 5/18/2017Venue: Brno Exhibition Centre, Brno, Czech RepublicStainless, International Stainless Steel Trade Fair and Congress, has been held at the Brno Exhibition Centre since 2009. It is a highly specialised show of stainless steel with strong international attendance both among exhibitors and visitors. With 80% international attendees of the total 150 this event is the most international in the Brno Exhibition Centre portfolio. Among visiting professionals of whom there are over a thousand this proportion is almost 40%. A traditional part of the show is a congress.  Event news: Website: http://www.bvv.cz/stainlessFuture Dates:Stainless 20192019-5Brno, Czech RepublicVenuesBrno Exhibition CentreVystaviště 1, Brno Czech Republic Tel: +420-541-151 111 http://www.bvv.cz/en/Organizers BVV Trade Fairs BrnoVystaviště 1 CZ, Brno Czech Republic Tel: +420-541-151 111 http://www.bvv.cz/

Stainless Steel World (SSW) 2017The Stainless Steel World Conference & ExhibitionDate: 11/28/2017 – 11/30/2017Venue: MECC Maastricht, Maastricht, NetherlandsThe Stainless Steel World Conference & Exhibition 2017 will be held November 28th – 30th 2017 in The MECC, Maastricht,The Netherlands. This long established and renowned 3 day combined conference and exhibition aims to be a most important industry event of 2017. Bringing together corrosion and materials professionals from the global market place in one place at one time, this unique event provides an excellent opportunity to meet with both man¬ufacturers, suppliers, traders and stockists involved in all stages of production of materials at the exhibition AND to join together with the engineers, end users and decision makers of the stainless steel industry during the conference and supplementary seminar programme. The Stainless Steel World Conference & Exhibition 2017, will be tailored toward providing direct business to business and networking opportunities PLUS will welcome persity of global knowledge from exhibitors, visitors and conference delegates which we hope will contribute to expanding the un¬derstanding and knowledge necessary for future industry growth.  Event news: Website: http://www.stainless-steel-world.net/Future Dates:Stainless Steel World (SSW) 20192019-11Maastricht, NetherlandsVenues

Metal & Steel Saudi Arabia 20176th international exhibition for steel, steel fabrication and metallurgy industryDate: 4/30/2017 – 5/3/2017Venue: Riyadh International Convention & Exhibition Centre, Riyadh, Saudi ArabiaConcurrent Expo: FABEX Saudi Arabia 2017 – 5th international Metal Forming, Fabricating, Welding and Finishing Exhibition dedicated to the GCC and Saudi ArabiaThe International exhibition of Metal & Steel/ FABEX Saudi Arabia will continue the staggering pace of growth to be recognized as the fastest growing steel, steel fabrication and metallurgy event in GCC region. With a variety of exhibitors and quality of buyers high on the agenda, Metal & Steel/ FABEX Saudi Arabia 2016 aims to be the best edition of the event so far, putting on display new product launches, live demonstrations, technology innovations and professional expertise.  Event news: Website: http://www.metalsteelsaudi.com/Future Dates:Metal & Steel Saudi Arabia 20182018-4Riyadh, Saudi ArabiaVenues

ESSC & DUPLEX 20179th European Stainless Steel Conference – Science & Market & 5th European Duplex Stainless Steel Conference & ExhibitionDate: 5/21/2017 – 5/23/2017Venue: Congress Center Giovanni XXIII, Bergamo, ItalyAfter the successful experience of Graz 2015, once again, the 9th European Stainless Steel Conference Science & Market and the 5th European Duplex Stainless Steel Conference & Exhibition will be jointly organized, as a single event, by AIM, the Italian Association for Metallurgy. The Conference will focus on all aspects of development, production technology (hot and cold rolling, heat treatment, etc.) and corrosion of stainless steels and duplex stainless steels and address delegates with both academic and industrial backgrounds. The results shall contribute to the advancement of existing and potential applications and will help to guide future development. The event will bring together developers, manufacturers and users of stainless steel from industry and  academia and will compare the present and future needs to satisfy these demands now or in the future. Short and medium term perspectives of European stainless steel fl at and long products will be widely discussed during the Stainless Steel Market Outlook session.  It is expected the presence of speakers representing the most important European stainless steel associations and reports coming from the big stainless steel companies.  Event news: Website: http://www.aimnet.it/essc2017.htmVenuesCongress Center Giovanni XXIIIviale Papa Giovanni XXIII, 106, 24121, Bergamo Italy Tel: +39-035-236435 http://www.congressibergamo.com/OrganizersAIM – Italian Society for Metallurgyp.le Rodolfo Morandi 2, 20121 Milano, Milan Italy Tel: +39-02-7602.1132 http://www.metallurgia-italiana.net/eng/