C&N industrial Group, pipe, fitting and flanges manufacturers,fbe epoxy and pe coating for pipeline since 1991,with brand C&N huitong ,C&N hongcheng.
Epoxy Coated Flanges means
The chief application of epoxy is as a coating on various metal products including pipes, flanges or even fasteners. The polymerization of epoxides forms an epoxy resin, which in turn is applied on the Epoxy Coated Flanges. The polymer is crosslinked, when this epoxy resin is thermostatically heated. The coating itself consists of two components. Firstly it is a resin and the next component is a hardener, which improves the durability of the Epoxy Coated Welding Neck Flange.
Types of Epoxy Coating used for flanges?
The most common type of coating used on flanges is FBE because of the many benefits it offers. For example, ASTM A105 FBE coated flanges have improved corrosion resistance and are much more durable than bare flanges, especially in industrial sectors such as oil and gas or potable water.
Carbon Steel Flange Fusion Bonded Epoxy Coating Process
The process of applying the coating can be simply broken down into three steps. The first step would be to clean the flange and then heat it to the required temperature. Once the flange is heated, the coating is applied. The final step is to cure the ASTM A350 LF2 Epoxy Coated Slip On Flange to make it permanent.
How long does epoxy coating last?
Since the Carbon Steel Flange Pe Coating applied is a thermoset one, it is considered to be a permanent one.
Advantages and disadvantages of FBE coated flanges
As well as having a lower corrosion rate, these ASME B16.5 epoxy coated flanges perform much better as they are less likely to fail due to stress cracking. Although there are some concerns regarding the carcinogenic factors associated with these coatings, they are known to be not only environmentally friendly but also non-toxic.
About ASTM A105
This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions
ASTM A105 is one of the most common forging grades used for high temperature service, the products of which include A105 Flanges, A105 Forged Fittings.
A105 CHEMICAL COMPOSITION % (ASTM A105)
| STEEL DESIGNATION | CHEMICAL COMPOSITION | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | C max | Si | Mn | P max | S max | Cu max | Ni max | Cr max | Mo max | V max | Nb max | Cu + Ni + Cr + Mo max | Cr + Mo max |
| ASTM A105 | 0,35 | 0,10 ÷ 0,35 | 0,60 ÷ 1,05 | 0,035 | 0,040 | 0,40 | 0,40 | 0,30 | 0,12 | 0,08 | 0,02 | 1,00 | 0,32 |
| STEEL QUALITY | TENSILE TESTING | ||||
|---|---|---|---|---|---|
| UNIFIED TENSILE STRENGTH R | DEVIATION FROM PROPORTIONALITY Rp 0,2 min | ELONGATION A min | C min | HB max | |
| N/mm2 | N/mm2 | % | % | ||
| ASTM A105 | 485 | 250 | 22 | 30 | 187 |
C&N is a professional steel forged flange manufacturer in China,ANSI B16.5 A105 Weld Neck Flange,A105N Weld Neck Flange,A105 Weld Neck Flange, A105 Bond Flange,A105 Slip On Flanges,Our A105 Flanges fully comply with NACE MR 0175 requirement.
We also mainly provide epoxy coated flanges, and in the coating process of flanges and pipe fittings, we process in strict accordance with standards and procedures.
