Description

PVC to ductile iron adapter according to the standard atlas can be divided into: national standard and non-standard. The national standard waterproof casing refers to the selection and production of the 02S404 or 02S312 standard atlas according to the Ministry of Construction. It has strict requirements on flange thickness, wing ring thickness, pipe diameter and thickness. Non-standards are in the case of the shape and the approximate structure conform to the standard atlas. When selecting materials, the thickness of the flange, the thickness of the wing ring, the diameter of the pipe and the thickness are considered to be relaxed. Strictly speaking, these are unqualified products. Of course, certain The relaxation criteria within the degree will not affect the use, but the excessive relaxation criteria will affect the performance.

PVC to ductile iron adapter according to the atlas, it can be divided into: S312 type flexible waterproof casing and 02S404 type flexible waterproof casing. Both have different dimensions and structural forms.