For the first time in the world, China has achieved direct extrusion molding of 49 to 63 inches of giant radial radial tires. On May 27, at the China National Petroleum and Chemical Industry Federation’s scientific and technological achievements appraisal meeting, the 49-63-inch giant tire ultra-wide-width plastic extrusion molding key process and equipment project was identified by the appraisal committee experts as: key Technology is a domestic and foreign initiative, at the international advanced level, is a major breakthrough in advanced manufacturing technology of giant engineering tires.
Professor Yang Weimin, leader of Polymer Materials Advanced Manufacturing Innovation Team at Beijing University of Chemical Technology, said that the giant engineering radial tire extrusion molding process newly developed by Beihua University and Shifeng Group has achieved 49~63 at home and abroad for the first time. The mega-engineered radial tire super-wide-extruded rubber billet was extruded directly to replace the conventional narrow-splicing process. The new process molded products have good overall denseness, high surface quality and molding accuracy, which helps improve the airtightness of the tires and reduce tire rolling resistance and fuel consumption.
Summary:
The valve has compacted structure, small flow-resistance with the flow pattern tend to be straight so that no sundries is kept inside. What`s more, it is light and convenient to install. The valve can be applied to cut off or regulate the flow of media. The valve can be actuated by operating lever, handle wheel, electric actuator or pneumatic actuator.
Unique Design:
The disc and the stem are connected without the structure of pin bolts, which guarantees no inner leakage.
Sealed surface of the disc is spherically shaped, which promotes the sealing capacity and increases the durability, which is to say even if opened and closed with pressure more than 50000 times, it remains no leakage.
Upon requests, the disc can be coated with Nylon or F46, Excellent anti-corrosion.
The valve body is coated with epoxy resin without any exposure of iron.
Reliable Sanitation:
The epoxy resin and rubber used comply with sanitary standard DVGW
Appling Area:
The valve can be used in water supply and drainage, disposing of polluted water, heat supply, gas, ship industry, metallurgical industry, energy system and textile and so on, especially applicable to those occasions that bi-directional sealing and valve body are easily eroded.
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