Welded steel pipe: also known as pipe, it is made by bending steel sheet or strip, and then welded. According to the weld form it is divided into Longitudinal and spiral pipe.
By end-use it is divided into general pipe, galvanized pipe, oxygen lance pipe, wire casing, metric pipe, roller pipe, deep well pump tubes, automobile tubes, transformers pipes, welding thin-walled tube, welding shape tube and spiral welded pipe.
Exchange the gas with the three part shielding gas mixture. Before attaching the three part shielding gas, lay the gas bottle on its side and roll the tank back and forth for two minutes to ensure a thorough mixing of the gas. Attach the gas gauges to the three-part gas bottle.
Turn on the MIG welder and set the heat and wire speed. Due to the higher amount of heat required to weld stainless steel, your standard heat settings for carbon steel will be inadequate. Look in your welding guide to determine an initial test setting for your heat and wire speed. Run a test pass with the welder to ensure that the settings are correct.
Cut two pieces of API steel casing pipe and two pieces of carbon steel pipe 4 inches long to use as test pieces. Mark the pipe with the permanent marker and the pipe wrap. Cut the pipe with the band saw. When cutting the stainless steel, reduce the speed and use cutting fluid to keep the band saw blade cool.
China Steel Association official said that since the European Union July 9, 2008 placed on file, China seamless pipe exports dropped drastically in August this year, exports to the EU a number of ~ 96,000 tons, with 327,000 tons last year, down 70.96% ; export value of 460 million U.S. dollars from the same period last year fell to 160 million U.S. dollars this year, trade volume fell 65.45%. The European Commission in the assessment completely ignored this fact, but based solely on the charges in the future, may cause damage to speculate on the basis of judgments.
It is understood that China Steel Association organized a new rule of CITIC Pacific Steel, Valin value for pipe, steel pipe,SSAW steel pipe Panzhihua, Chengdu, Wuxi Seamless, Baosteel, Anshan Iron and Steel and other nine companies, representing 210 enterprises to actively be involved in the case v., organizing defense industry, and has in the January 15, 2009, June 4 hearing of the European Commission cited the fact that the data set, but did not receive sufficient attention, in particular the European Union during the survey period seamless industrial profits up 15 percent.
"My iron and steel," said analyst Xu Xiangchun, 2008, China's exports to the EU the number of seamless steel tubes for the 498.6 thousand tons, amounting to 740 million U.S. dollars.