Hebei Paris International Trading Co.,LTD
Customer's demand is our target
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Products decription :
Normal Pressure Quick-Opening Manhole Specialised Pipe And Fittings
Normal Pressure Quick-Opening Manhole Specialised Pipe And Fittings
Introduction and use of manhole:
is installed in a variety of stainless steel tanks, as a passageway and vent for staff during installation, repair, cleaning and maintenance! Generally, stainless steel manholes are made of steel plates of 304 and 316 materials as raw materials, and can also be made according to customer requirements. One manhole should be located near the right side of the oil inlet and outlet pipes, and try to make the manhole face the closed door of the tank chamber so as to facilitate the entry and exit of the oil tank and the ventilation pipe. Since the manhole is installed on the bottom ring of the oil tank, leakage prevention is particularly important. It is required that the joint surface of the two flanges must be flat and free of twisting. Reinforcing plates and flanges should be cut on the whole steel plate without splicing. The flange and cover plate are processed with sealing rings, so special attention should be paid to protection during construction. 3mm thick asbestos rubber gasket is used for sealing, no cracks are allowed. When installing the manhole cover plate to tighten the bolts, force diagonally to prevent the manhole cover from deforming.
HG/T21515-2005 normal pressure manhole application scope: HG/T21515-2005 standard normal pressure manhole is suitable for normal pressure manhole with non-impact working pressure less than 0.07MPA and working temperature 0-250 degrees
Manholes can be divided into straight-through manholes, three-way manholes, four-way manholes, and oblique-through manholes. For details, see Table 1 below. Among them, the oblique manhole is divided into five types: 15°, 30°, 45°, 60°, and 75°. The angle of each oblique manhole can be applied within the range of ±7.5°.
Company Profiles
Our Focus on the total needs of our client and our emphasis is on the services and prompt solutions for all their critical purchasing requirements
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We have an efficient and experienced team of staffs in China and regions concentrating on the trading of engineering steels and its related part and equipments .We have the capacity to execute large and important orders,yet we are conscientious enough to pay attention to the smallest requestments
Our experienced engineers and in house QC engineers also provide technical support on top of their general sales service,
We focus on the total needs of our clients from a particular industry,This reduces the need for most buyer to cope with multiple dealers for products of different size ,Variety ,Several different sources or products from various part of the world ,We also reduce the need for most buyers to deal with different salespeople and departments within the same trading company
Our Strength lies in Our People ,Our resources ,Our flexibility and our tireless commitment to serving our customers
1.Air express(FedEx,UPS,DHL&EMS);
2.Air transport;
3.Sea transport;
4.Sea-land transport.
