Anti-Corrosion Coating

The external coating is mainly used for anti-corrossion protection for liquid pipes before burying;

The internal drag-reducing coating is used to reduce the investment and maintenance costs.

Coating Type	Coating Standard
Single Layer FBE	SY/T 0315-2005, CAN/CSA Z245.20-2010,
	DEP 31.40.30.32-Gen-2011, ISO 21809-2-2007, API RP 5L9-2001
Double Layer FBE	Q/enPC 38-2002, CAN/CSA Z245.20-2010
2LPE/2LPP Coating	SY/T 0413-2002, GB/T 23257-2009, ISO 21809-1-2009
3LPE/3LPP Coating	SY/T 0413-2002, GB/T 23257-2009, DIN 30670-1991, CAN/CSA Z245.21-2010,
	ISO 21809-1-2009, NF A49-711-1992, NF A49-710-1988
Concrete Weight Coating	Q/HS 3017—2008
Insulation Coating	SY/T 0415-1996, CJ/T 114-2000, EN 253-1994
Bitumen Coating	BS 534-1990

3PE anti-corrosion generally consists of 3 layers of structure:

First layer of epoxy powder (FBE> 100um)
Second layer of adhesive (AD) 170～250um

The third layer of polyethylene (PE) 2.5～3.7mm

Steel Pipe	Polyethylene	Polypropylene
DN
DN≤ 100	2.5mm	1.8mm
100	2.7mm	2.0mm
250	2.9mm	2.2mm
500	3.2mm	2.5mm
DN≥800	3.7mm	2.5mm