⑩ When flange and pipe connections, both from the inside and the tube must be welded, and the axis of the pipe flange surface inclination should be less than or equal to 1/100 of the pipe diameter. Flanged should strictly, the axial deviation is less than the maximum allowable 2mm, the method may not be used to eliminate skew strong bolts. Tighten bolts carried out twice, the first time again evenly crosswise, then tighten the bolts. PE pipe has medium density polyethylene pipes and high-density polyethylene pipe. More suitable for conveying gaseous artificial gas, natural gas, liquefied petroleum gas, or mainly used to transport natural gas. The PVC pipe is mainly used to transport drinking water, wastewater application of FRP pipe electricity, chemicals, heating fluid and coolant tube manufacturers fiberglass electricity, food and electricity fiberglass tube, ultra-pure liquids, slurries, gases, compressed air and vacuum systems. Its use has some limitations. CPVC pipe is widely used in urban power grid construction and transformation; municipal renovation project; civil airport construction; engineering parks, residential construction; transportation, road and bridge construction city street cabling, mainly used in the power industry. PPR pipe low hardness, rigidity difference in handling, construction should be protected cpvc fiberglass power tubes, likely to cause secondary damage to the pipe fitting. PPR pipe there is a certain low temperature brittleness, the pipeline has been installed can not pressure, percussion, vulnerable to external sites to cover protector if necessary. Compared, PE pipe, use of CPVC pipe is limited, more suitable for use in the power industry, poor rigidity PPR pipe, easy fault, glass pipes comparison, are not these shortcomings, glass pipe is more suitable for use in water handling duct fields. FRP mpp power tubes, Xiong Wang Thai, Huludao FRP pipe electricity provided by Xiong Wang Thai Plastic Products Factory. Xiong Wang Thai Plastic Products Factory (www.wangtai668.com) strong, credible, in Baoding UPVC pipe industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Taihe Wang Xiong you hand into the brilliant, for a better future!