The importance of selecting convex and concave flanges for high-pressure pipe retractors The concave-convex flanges are further divided into 1, and the contact pressures of the protruding faces: The characteristics of using this high-pressure pipe retractor are: simple structure, convenient processing, easy handling, and easy anti-corrosion lining; Use: The pressure surface can be smooth, suitable for PN less than or equal to 2.5MPa; grooved (2 to 4 strips, width X depth 0.8mmX0.4mm, cross-sectional triangular circumferential groove), so that the pad The sheet is easily deformed and prevents the non-metallic gasket from being squeezed out for wider application; the container flange can be used up to 6.4 MPa, and the tube flange can even be used up to 25 to 42 MPa, but with the increase of the nominal pressure, the nominal diameter is adapted accordingly. Decrease. 2, convex and concave pressure expansion joints: easy to install, effectively prevent the gasket was squeezed out, but the width is larger, it requires a larger bolt pre-tightening force, the flange size is also larger. Suitable for container flanges and pipe flanges with a PN of 6.4 MPa or less. 3, expansion joint pressure surface expansion joints: from the surface, groove surface composition, gasket placed in the tank, will not be squeezed pressure surface, less subject to media erosion and corrosion. Because the sealing surface is narrow, the required bolt force is small, and it is suitable for occasions with higher pressure and strict sealing requirements, such as flammable, explosive and highly hazardous or extremely hazardous toxic media and other important occasions. But the structure is complicated, the gasket is easy to be squeezed in the groove, it is difficult to remove, and it is difficult to replace the gasket. In addition, it should be noted that the flanges of the skull must be protected during transport to avoid collision deformation. 4. Ladder groove compression surface expansion joint: The trapezoid groove compression surface is used with an elliptical ring gasket or an octagonal ring gasket. The tapered surface of the groove forms a line contact seal with the ring pad and is therefore used in high pressure applications.
Gongyi integrity water supply equipment has been established so far, always adhere to: "science and technology as a precursor, depending on the quality of life, the user as God" business philosophy, adhere to the principle of excellence in product quality, professional R & D and production of various products and equipment. Our company adhering to the "innovation, excellence, unity, dedication," the spirit of enterprise, casting a number of outstanding quality, excellent performance of the famous products, new and old customers have won critical acclaim
Gongyi integrity water supply equipment has been established so far, always adhere to: "science and technology as a precursor, depending on the quality of life, the user as God" business philosophy, adhere to the principle of excellence in product quality, professional R & D and production of various products and equipment. Our company adhering to the "innovation, excellence, unity, dedication," the spirit of enterprise, casting a number of outstanding quality, excellent performance of the famous products, new and old customers have won critical acclaim
The products are mainly exported to East Asia, South America, Western Europe, Australia and Taiwan markets. We are China's major exporters of Pyrite, "Hengkai Metallurgical " is the first brand of high grade pyrite export. Products are widely as increase sulfur agent used in smelting and casting, fillers of grinding wheel's abrasive, soil conditioner, as the adsorbent of heavy metals in wastewater, filler of core-spun yarn, lithium battery cathode materials, by the user praise and trust.
Pyrite, Iron Pyrite, Ferrous Sulfide, Iron Pyrite Powder
LUANCHUAN COUNTY HENGKAI METALLURGICAL MATERIALS SALES CO.,LTD , https://www.pyritechina.com