1. F4 tight lining series products obtained by using this composite technology have no space on the critical surface of the lining coat, and the performance is no longer affected by the air between the interlayers; The extremely high peel strength after composite effectively limits the axial variation of the lining F4 thermal expansion, cold contraction and cold flow creep, so that the deformation turns to the radial direction and the average dispersion is on the slight change of thickness. In this way, it can be applied in the environment with high temperature or more frequent temperature change and negative pressure. In addition, because the effect of tight lining is equivalent to riveting the F4 thin layer on the coat substrate, there is no need to increase the thickness of F4 to strengthen its mechanical strength, so the manufacture of large or complex F4 lining vessels, equipment, etc., is also solved, and more economical and reasonable.
2, F4/C.S, PO/C.S, F4/FRP lining tower, kettle, container and other large equipment specifications
F4/C.S lining equipment: diameter DN≤3000MM per section length L≤2000MM
F4/FRP composite equipment: diameter DN≤3500MM each section length L≤2000MM
PO/C.S lining equipment: diameter DN≤5000MM, length L≤10000MM per section
1) Non-standard equipment, such as complex structure and long, can be constructed according to the drawing or designed for processing.
2) If it is used under the condition of negative pressure, please explain it when ordering, then it shall be constructed according to the process lining of negative pressure resistance.
3) If there is no special requirement for flange, it shall be in accordance with the provisions of HG 20592-2009 PN1.0PA
4) The thickness of lining and coat is as shown in the chart
5) Corrosion resistance, use temperature and use pressure according to the chart
6) The FRP matrix resin of F4/FRP composite equipment is unsaturated polyester resin, or other thermosetting resin can be used according to user requirements.
3, F4/C.S, PO/C.S, F4/FRP lined straight pipe and pipe fittings specifications
F4/C.S lining straight pipe and pipe fittings: diameter 25≤DN≤300MM per section length L≤2000MM
F4/FRP composite straight pipe and pipe fittings: diameter 25≤DN≤300MM per section length L≤2000MM
PO/C.S lined straight pipe and pipe fittings: L≤2000MM when 25≤DN≤50MM
4, ordering installation matters needing attention
1) When ordering, the user should try to provide the medium, temperature and pressure, especially if it is used under negative pressure.
2) If users have their own seamless steel tube coat, single purchase F4 lining, etc., and the quantity is large, the company can send people to assist flanging lining.
3) The lining equipment should be prevented from collision during handling; Storage should be more than 1M away from the heat source, and long-term exposure is prohibited.
4) During installation, the lining shell shall not be welded or cut by gas; Lining and flanging should be protected; Flange bolts should be uniform to maintain good sealing performance.
5) Because the lining material of each lining valve is thermoplastic, it should not be closed too violently during operation, and the positioning nut should not be twisted arbitrarily to prevent damage.
6) If there is no special requirement for the form of connecting flange, HG20592-2009 standard is adopted, or other flange standards (such as GBJB SY, ANSI JISDIN, etc.) or specially made can be applied according to needs.
7) Our company has strong technical force and complete processing equipment, which can design and process various non-standard and special anticorrosive products for users, and can undertake the construction and installation of a full set of anticorrosive equipment.
