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High Frenquecy Welding of Stainless Steel Tubing(Two)Date: 2014-07-08INTERNAL BEAD  The internal bead formed during the HF welding operation can be removed by scarfing with a carbide tool or by rolling into the I.D.. Many manufacturers leave the bead in place when the tube is to be used for decorative applications. If a high quality weld is required, scarfing is highly recommended as rolling the bead into the I.D. can create cracks and str...
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High Frenquecy Welding of Stainless Steel Tubing(One)Date: 2014-07-08The welding of stainless steel tubes differs substantially from the welding of high quality carbon steel tubes in a number of ways. The most significant difference is in the melting point of the oxides that are formed on the faying edges during the welding process. The oxides formed on carbon steel generally melt at a temperature lower than the melting point of the steel. Sinc...
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Dull Annealing for Stainless Steel TubeDate: 2014-07-08DULL ANNEALING SYSTEMS   This is often the stepping stone from off line annealing to in line annealing, it is compact requiring a standard induction heating system followed by a dwell zone and then a direct water quench. Obviously the tube still needs to be pickled after annealing, but the benefits of using induction heating are: 1. The quantity of scale formed is ...
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Bright Annealing for Stainless Steel TubeDate: 2014-07-08When talking about annealing, there are dull and bright annealing systems for a wide variety of parts from engine parts to hand tools to wire and tube. Bright and dull annealing of stainless steel wire, rod and tube is not a new subject, what is new is the change in technology to achieve the desired result. Most installations in the past used off-line annealing facilities beca...
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Main Features of Stainless Steel Pipe Making Machine Manufactured in ChinaDate: 2014-07-08Hengda is devoted to serve the stainless steel industry. We provide clients with the excellent & integrative service of design, manufacturing & installation, testing & training, and insist on the business principle of "quality assured" & "reliable reputation". Our mission is to serve the needs of our customers to the best by providing our hig...
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Finishing of Stainless steelsDate: 2014-07-08Surface finish is an important specification for stainless steel products and is critical in applications where appearance is also important. Certain surface finishes also make stainless steel easier to clean, which is obviously important for sanitary applications. A smooth surface as obtained by polishing also provides better corrosion resistance. On the other hand, rough fini...
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Nickel prices and the effect on Stainless Steel pricesDate: 2014-07-08The health of the worldwide nickel market is heavily dependent upon stainless steel production. The pricing of stainless steel is also dependent on the market prices of worldwide nickel. Two-thirds of all nickel mined and produced in the world will make its way into stainless steel. Disovered in 1751, nickel held very little value to industry until Michael Faraday, in 1820, di...
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Report says auto manufacturing, rising oil prices will spur demand for metal pipe, tubeDate: 2013-12-01IBISWorld, a Los Angeles-based source of industry and market research, has updated its report on the metal pipe and tube manufacturing industry in reaction to the market’s volatility in the past five years. Volatility in the price of steel has damaged the metal pipe and tube manufacturing industry over the last five years. Metal tube and pipe producers manufacture welded...
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China's industrial profit up 15.1% in Oct Date: 2013-12-01China's industrial profit up 15.1% in Oct Major Chinese industrial businesses saw their profits rise 15.1 percent year on year in October, slowing from 18.4 percent in September, official data showed on Thursday. Total profits of industrial companies with annual revenues of more than 20 million yuan ($3.26 million) reached 581.04 billion yuan in October, the National Bureau of...
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