- Hot search：
ISO 8179-2-2017 pdf free download
ISO 8179-2-2017 pdf free download.Ductile iron pipes, fittings, accessories and their joints External zinc-based coating Part 2:Zinc-rich paint
Tuya ux, raccords et accessoires en fon te ductile et leu rs assemblages — Revêtement extérieur a base de zinc — Partie 2: Peinture riche en zinc.
5.3 Coating characteristics
The zinc-rich paint coating shall cover the outside cylindrical surface of the pipeline component and shall be free from such defects as bare patches or lack of adhesion.
A spiralled appearance is permissible provided that the zinc-rich paint coating masses comply with the requirements of £4.
The manufacturer shall define those coating irregularities which are considered not detrimental to the performance of the coating system.
Damaged areas of zinc-rich paint coating caused by handling are acceptable, provided that the area of damage is less than 5 cm2 per square metre and that the minor dimension of the damaged area does not exceed 5 mm.
Greater areas of damage shall be repaired in accordance with 5,5..
5.4 Zinc-rich paint coating mass
The mean mass of zinc-rich paint coating measured in accordance with 11 shall be as follows:
— not less than 235 g/m2 with a local minimum of 210 g/mZ;
— in low corrosive areas, by agreement between the purchaser and the supplier, ISO g/mZ with a local minimum of 130 g/m2.
NOTE The masses of zinc-rich paint coating are equivalent to 200 g/m2 with a local minimum of 180 g/m2 of metallic zinc coating (first case) and 130 g/m with a local minimum of 110 g/m2 of that (second case).
Where there are very corrosive soils the manufacturer and the purchaser may decide to use an additional coating mass of zinc-rich paint. For the selection of coatings in relation to the characteristics of soils Annex B can be consulted.
The manufacturer shall visually inspect each pipeline component for quality and uniformity of coating and shall carry out regular measurements of zinc-rich paint coating masses in accordance with the method described In 71.
The factory quality control tests ensure conformity to the standard. Where informative field verification is required, one of the methods described in AnnCLA shall be agreed upon between the manufacturer and the purchaser.
5.5 Repairs to the zinc-rich paint coating
The manufacturer is permitted to carry out repairs by zinc-rich paint containing more than 85 % zinc in the dry film provided that the requirements of CLaue..4. £3. and £4 are met.ISO 8179-2-2017 pdf free download.
All resources on this website are from the Internet. It is only for personal study and research. No one is allowed to use it for any commercial purpose. If you need, please buy the genuine standard. If there is any infringement of your copyright, please contact the webmaster in time, and I will correct it immediately.
- Maybe you like
- Latest Updates
- ISO 287-2009 pdf free download
- ISO 527-5-2009 pdf free download
- ISO 659-2009 pdf free download
- ISO 660-2009 pdf free download
- ISO 712-2009 pdf free download
- ISO 725-2009 pdf free download
- ISO 730-2009 pdf free download
- ISO 927-2009 pdf free download
- ISO 2041-2009 pdf free download
- ISO 3040-2009 pdf free download
- ISO 3506-2-2009 pdf free download
- ISO 3506-3-2009 pdf free download