Name: Epoxy powder for drinking water pipes
Brand: Langfang Yanmei Chemical
Availability: InStock
Rating: 5 (1 reviews)

Description

Product Features

The product implements CJ/T 120-2016 standard, which is a single-layer epoxy heavy anticorrosive powder coating. With high coating crosslinking density and strong adhesion, it is suitable for internal anticorrosion of water coated steel pipe and non-thread coated steel pipe fittings with working temperature below 45℃.The product meets the sanitary requirements of sanitation and Safety Evaluation Code for Drinking Water Transmission and Distribution Equipment and Protective Materials (2001) and GB/T 17219-1998 Safety Evaluation Standard for Drinking Water Transmission and Distribution Equipment and Protective Materials.

Application scope and characteristics

1.Internal corrosion prevention of steel pipes,valves, pumps, containers, components, etc.

2.Compared with other types of coatings, environmental protection, easy to thick coating, good adhesion, good adhesion, in line with the safety standards of drinking water transmission and distribution equipment protective materials.

3.It has the characteristics of mature process, the coating quality is easy to control, easy to repair.

Method and dosage

1.Coating method: Electrostatic spraying,thermal spraying, fluidized bed, well immersion coating, roll coating,suction coating.

2.Theoretical dosage: 150g / m²/ 100 μ m.The detailed thickness is shown in Table 5 of the standard CJ / T 120-2016.
3.Surface treatment: Sandblasting or Pelblasting(For DN≤150 steel pipe can also be pickling).
4.Curing instructions:The powder coating is applied on the surface of 180~230℃ preheated workpiece, cured by waste heat, and generally does not need later heating. If the ambient temperature is very low or the heat capacity of the workpiece is insufficient, additional heating and curing is required.If the coating absorption process is used, the workpiece should be preheated to 130 ± 20℃ for suction coating. After the suction coating, the workpiece should be cured for 20min between 180 and 200℃. The curing temperature and time in winter should be appropriately extended to ensure that the powder coating can be completely cured.

Construction technology and repair technology references

1. Sandblasting or shot blasting to Sa2.5 level, anchor pattern depth 40~100μm, surface dust removal to near white leve.

2.Clean the dust and abrasives on the surface of the steel pipe.
3.The salt content on the steel pipe surface should not exceed 20mg/m².
4.The treated steel pipe should be protected from moisture and secondary pollution, and should be coated within 4 hours. If it exceeds 4 hours or rust or surface pollution occurs, it should be re-treated.
5.Workpiece preheating is generally controlled at 180~230°C , and must not exceed 275°C.
6.Apply the powder on the surface of the workpiece to adjust the required thickness.
7.After complete curing, the test shall be conducted when the workpiece drops below 95℃.
8.the leakage point repair, can be repaired with the company's two-component solvent-free liquid epoxy paint.