Difference Between High Frequency Straight Seam Welded Pipe and Seamless Steel Tube Business Articles | November 4 Wholesale Jerseys Online , 2016
In this case,ERW steel pipe with the use of hot-rolled coil as raw material, wall thickness can be controlled evenly in the ± 0.2mm around the end of the US APl steel pipe or GB T9711.1 standards, repair side beating, length delivery And so on. In recent years, the natural gas pipeline network engineering and gas companies have been widely used ERW steel pipe as the main pipe pipe network.
Electric Resistance Welding (ERW) and seamless steel pipe?is the biggest difference lies in the ERW has a weld Wholesale Jerseys Free Shipping , which is the key to the quality of ERW steel pipe. Modern ERW steel pipe production process and equipment, as the international community, especially the United States and other years of unremitting efforts, making the ERW seamless steel pipe has been a more satisfactory solution.
It was the ERW seamless steel pipe is divided into geometric seamless and physical seamless. Geometric seamless ERW steel pipe is to remove the internal and external glitches. Due to the structure and tool of the inner burr removal system, the burr removal of large and medium-sized steel pipes has been well handled. The burr can be controlled in -0.2mm ~ +0.5 mm or so. Physical seamless means that there is a difference between the microstructure of the weld metal and the base metal, which leads to the decrease of the mechanical properties of the weld area Wholesale Jerseys From China , and needs to take measures to make it uniform and uniform.
The high-frequency welding heat process of ERW steel tube caused the temperature gradient in the vicinity of the edge of the tube, and formed characteristic regions such as melting zone, semi-melting zone, superheating structure, normalizing zone, incomplete normalizing zone and tempering zone. In the superheat zone Wholesale Jerseys China , the austenite grain grows abruptly under the condition that the welding temperature is above 1000 , and the hard and brittle coarse crystal phase is formed under the cooling condition. Besides, the existence of the temperature gradient will produce welding stress.
In this way, the formation of the mechanical properties of the weld zone lower than the base metal case, the physical seamless through the local conventional weld heat treatment process is the use of medium frequency induction heating device will weld area heated to AC3 (927 ), and then 60m Length Wholesale Jerseys , speed 20m min in the air-cooled process, if necessary, then water cooling. The use of this method to eliminate stress, soften and refine the organization, improve the comprehensive heat-affected zone mechanical properties of the purpose. At present, the world's most advanced ERW unit has been widely used this method to deal with the weld Cheap NCAA College Jerseys , has achieved good results. High-quality ERW steel pipe not only can not argue out the weld, and weld coefficient of 1, to achieve the weld area of the organization and the base material match.
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Free News Articles Home Business Free News Articles Real Estate Fannie Hillman + Associates Expands Central Florida Legacy Fannie Hillman + Associates Expands Central Florida Legacy
WINTER PARK, Fla. -- Fannie Hillman + Associates Cheap NCAA Jerseys , a long-standing fixture in the Central Florida real estate market, has acquired a new location along famed Park Avenue in Winter Park, Florida. On September 26, 2019, Fannie Hillman + Associates, led by President and Broker Scott Hillman Cheap Jerseys Free Shipping , purchased Winter Park Land Company.
The oldest real estate brokerage in the state of Florida, Winter Park Land Company's rich history has helped form our Winter Park community. Certainly, our great town would not be what it is without the efforts of Winter Park Land Company.
Fannie Hillman + Associates is thrilled to be expanding their boutique firm, while maintaining an exceptional level of personalized service to their current and future clients. The Park Avenue location will allow Fannie Hillman + Associates to provide an even greater presence in the community they love and serve.
Their original and current location at 205 West Fairbanks Avenue will remain open; Fannie Hillman + Associates will be operating at full strength from both offices.
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