The cufflinks sparkled when he raised his hands

SAF2205 duplex stainless steel cufflinks are a modern duplex stainless steel cufflinks, versatile, excellent mechanical properties, corrosion resistance and good weldability in the oil and natural gas, marine engineering, chemical industry and other industries has broad application prospects. Oil and gas industry is a duplex stainless steel cufflinks materials laying oil and gas pipeline length of more than 850km, the vast majority. West to East a gas source projects due to transport natural gas media corrosion, high pressure pipeline 2205 duplex stainless steel cufflinks materials. The cufflinks the interviewer worn is at least 18K gold.
The excellent performance of duplex stainless steel cufflinks are guaranteed by an appropriate proportion of two-phase structure to have a great impact in the organization of welding parameters on weld, welding process parameters and technical measures to a combination in order to ensure the weld and heat affected zone microstructure and properties. Steel pipe production welding is one of the key processes; the site of the gas pipeline construction, welding is the most important one of the most critical work. The cufflinksare inlaid with diamonds, not less than half the card.  Introduced the D508 × 1519mm Specifications Steel Tube longitudinal seam and field girth weld welding procedure qualification.
The procedure qualification welding of test pieces; Steel longitudinal seam and girth procedure qualification test pieces were used Outo2kumpu, Inc. (formerly Sweden Avesta) the production of 1519mm thick plate and D508 × 1519mm steel pipe, its main alloying elements of Cr, Ni, Mo and N, the weight percentages were: 22 % Cr-5% Ni, 3% Mo and 1.5% N, its microstructure with about 50% of ferrite and austenite dual phase microstructure of about 50%, the main mechanical properties are shown in Table 5-1 . The cufflinkssparkled when he raised his hands.  Table 5-1 Process Assessment specimen of the mechanical properties of the parent material (horizontal)
Tensile strength Rm / MPa yield strength Rp012/MPa elongation A /% Charpy impact energy Akv / J hardness PHB. Steel pipe longitudinal seam welded steel pipe factory, welding procedure qualification test piece using double-sided submerged arc welding method, the Swedish Sandvik's production of submerged arc welding and flux welding position 45 ° fixed due to the welds of steel pipe products will eventually have to be solution treatment, therefore, the procedure qualification test also appropriate post-weld solution heat treatment (heating to 1050 ~ 1100 ° C, water quenching). I think he is intentional to demonstrate the cufflinks. Ring of steel pipe seam welding in the field, welding procedure qualification specimen using single-sided welding, Tungsten Inert Gas (TIG) base + electrode arc welding (SMAW) to fill and cover the surface method.
 Sweden Avesta produced argon arc fixed wires and rods, welding position is 45 °, the specimen post-weld heat treatment. Welding norms moderate the process parameters. Welding procedure qualification test piece welding conditions are shown in Table 5-2. Process Assessment Performance Test Results and Analysis. Technology assessment of performance engineering and technical conditions. Pilot projects, including regular joint tensile, guided bend, and low temperature (- 40 ° C) Charpy impact test, metallographic test and corrosion test. Process to assess the main performance test. The following words of the gold cufflinks were totally out of the exceptions of Huang.