The principle of iodine-tungsten lamp is similar to that of incandescent lamp, except that it is filled with iodine vapor. The iodine vapor has a property of being combined with tungsten at low temperature (relative) and decomposing at high temperature, so that it is located in other parts of the lamp. The tungsten that has been sublimated is combined and decomposed on the filament, so that the filament will not burn quickly due to high temperature.
Frequency welded pipe characterized by: welding speed large and welding heat affected zone small, weld the workpiece may not clean up, can weld thin-walled tube, can weld metal pipe.Production process depends mainly on the variety of materials, from raw materials to finished products need to go through a series of processes, these processes need kinds of machinery and welding equipment, electrical control, testing equipment, such equipment and fittings in accordance with a different process requires more reasonable arrangement, high frequency welded typical process: Slitting - unwinding - strip leveler - head and tail cut - steel welding - looper accumulator - forming - welding - deburring - sizing - testing - fly cut - initial inspection - straightening steel - pipe processing - hydrostatic test - flaw detection - printing and coating - finished.
Product:Erw Steel Pipe
Size:DN10-DN900
Materials: A53-B,A106-B,API5L-B,A106-C,A333-3,A312,ST37/35/52,X42,X52,X60...
Thickness: 2mm-30mm.
Standard:ASTM,JIS,DIN,GOST.......
Crafts: Hot-Rolled, Cold Drawn, Thermal Expansion, ERW, LSAW...
Connection: Welding,Threaded.
Package: Paint, Anti-rust oil, Canvas Packaging, According to customer requirements.
Brand Name: HY
Place of Origin: China (Mainland)
Certification: API 5L.ISO.UKS.SGS.BV
Application: Chemical, Water, Oil and gas, Electricity
Erw Steel Pipe,Erw Carbon Steel Pipe,Erw Pipe,Erw Tube
CANGZHOU HAOYUAN PIPE FITTINGS MFG CO.,LTD , http://www.pipefitting-china.com