ISO 11177:2019 pdf download

ISO 11177:2019 pdf download.Vitreous and porcelain enamels — Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply — Quality requirements and testing
1 Scope
This document specifies the requirements for product quality and product testing of enamelled valves and pressure pipe fittings for untreated and potable water supply.
It does not apply to chemical service glass-enamel and apparatus enamel.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness —Magnetic method
ISO 6370-1, Vitreous and porcelain enamels — Determination of the resistance to abrasion — Part 1:Abrasion testing apparatus
ISO 6370-2, Vitreous and porcelain enamels — Determination of the resistance to abrasion — Part 2: Loss in mass after sub-surface abrasion
ISO 13807, Vitreous and porcelain enamels — Determination of crack formation temperature in the thermal shock testing of enamels for the chemical industry
ISO 15695, Vitreous and porcelain enamels — Determination of scratch resistance of enamel finishes
ISO 16474-1, Paints and varnishes — Methods of exposure to laboratory light sources — Part 1: General guidance
ISO 16474-2, Paints and varnishes — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
ISO 28706-1:2008, Vitreous and porcelain enamels — Determination of resistance to chemical corrosion —Part 1: Determination of resistance to chemical corrosion by acids at room temperature
ISO 28706-2, Vitreous and porcelain enamels — Determination of resistance to chemical corrosion —Part 2: Determination of resistance to chemical corrosion by boiling acids, boiling neutral liquids, alkaline liquids and/or their vapours
EN 15771, Vitreous and porcelain enamels — Determination of surface scratch hardness according to the Mohs scale
DIN 50929-3, Corrosion of metals — Probability of corrosion of metallic materials when subject to corrosion from the outside — Buried and underwater pipelines and structural components
5.7 Corrosion and chemical resistance to acid soil
Requirements for corrosion resistance of the exterior coating (sheathing) to very aggressive soils with a soil assessment value B 0 or B 1 , less than −10, in accordance with DIN 50929-3 (equivalent to soil Class lll in accordance with DIN 50929-3) shall be met. The testing shall be carried out in a watery solution equivalent to soil Class lll in accordance with DIN 50929-3 (pH = 4, 400 mmol/kg sodium chloride, 400 mmol/kg sodium sulfate) at room temperature over a period of six months. A further test shall to be carried out in very aggressive moist soil [less than 20 % (w/v) water] in accordance with DIN 50929-3 over a period of six months outdoors.