Hebei Longxu pipeline equipment Co. Ltd., Hebei Xintai pipeline group, a professional production and operation of pipeline equipment, building materials and chemicals import and export trade Co. Ltd. is engaged in the integration of the core pipe industry, has a history of 30 years. The company mainly produces and operates two parts of steel pipe and pipe fittings. The products are widely used in petroleum, chemical, aerospace, power plants, energy, environmental protection, boilers, heat exchangers, ships, subways, pharmaceuticals, breweries, construction, engineering transformation, etc..
Manhole flange is located on the floor, the diameter is generally 50cm or 60cm. In the oil tank installation, cleaning and maintenance, the staff can go through the manhole into the tank, you can also use the manhole ventilation. Manhole with atmospheric manhole, tank top manhole, tank manhole, with core manhole, etc.. Because in the lower tank manhole, manhole under great pressure of liquid, in order to prevent the leakage of the manhole, the installation quality must be strict, the processing of the flange and the cover plate is provided with a sealing line, must pay attention in the construction, so as to avoid oil leakage in use. Every time when the manhole to be marked, so as not to install the dislocation, the impact of tightness. When installing the nut on the manhole cover plate, it is necessary to make a pair of diagonal uniform force to prevent the oil leakage caused by the deformation of the cover plate or uneven force.
Circular welded circular manhole, manhole, manhole, insulation insulation, rectangular rectangular manhole flue ash hole, pressure manhole, flange, manhole cover type cyclotron room cover butt welding neck flange manhole, vertical hanging cover hubbed flange, vertical hanging cover neck flange, manhole cover plate horizontal hanging flange, manhole horizontal hanging cover plate welded flange, manhole cover, rotary elliptical quick open manhole cover arch rotary quick open manhole, hand hole, pressure plate flange hubbed flange hand hole, hand hole, neck flange, rotary hand hole cover neck flange hand hole, hand hole cover, rotary pressure fast fast hand pipe hole, mirror etc.