Waterproof casing GB products compared to the still water of wing in non-standard diameter also have differences, national standard big wing ring diameter within the fixed to the wall so that it can be better, in addition to these we according to the life common sense to judge out what other factors: in pipeline system of waterproof casing, increasing pipe pressure bearing, used for wall and underground pipeline protection shuttle no-load roll, stress, deformation, stress, is the foundation of building, booked auxiliary wall structure, waterproof casing flange ring is waterproof casing the increase of the outer ring of the steel structure of the wall, has increased the intensity of flexible waterproof casing wall, waterproof casing pressure and gravity load under building foundation damage effectively.
Non-standard wing ring waterproof casing, the standard of this product is agreed by production, material, wall thickness, the thickness of the flange, the data are based on manufacturer in the market competition strength, no unified standard. For example DN600 rigid waterproofing casing, some unscrupulous traders to market competition, made by the 1.6 mm pipe down 6 times more than the national standard, regardless of the product they can not made an appearance, as long as prices are low down, but such use of the quality of the project will be threatened. Common quality rigid waterproofing casing wall thickness is illegal manufacturers standards more than four times its almost close to 02 s312 standard, the product is absolutely won't make any mistakes in terms of quality.
Because waterproof casing because of nonstandard market competition, the present stage is divided in two types: the national standard and non-standard, national standard according to the ministry of construction related 02 s404 or 02 s312 standard atlas of select material and production, thickness of the flange thickness, fins, pipe diameter and wall thickness have strict requirements. According to the standard size of design, non-standard shape and structure about in accordance with the requirements of the atlas, thickness of the flange thickness, fins, the size of the pipe diameter and wall thickness to make a difference, to reduce weight, reduce the cost. Strictly speaking, these are unqualified products, of course, the thickness and wall to do a little difference of size, can reduce the engineering cost will not affect use, but to a certain extent affect the using performance.
