Anti-corrosion coating

Coating Type

• 

• Coating Type	Coating Standard
  Single Layer FBE	SY/T 0315-2005, CAN/CSA Z245.20-2010, ISO 21809-2-2007, DEP 31.40.30.32-Gen-2011, API RP 5L9-2001
  Double Layer FBE	CAN/CSA Z245.20-2010, Q/en PC 38-2002
  2LPE/2LPP Coating	GB/T 23257-2009, SY/T 0413-2002, ISO 21809-1-2009
  3LPE/3LPP Coating	SY/T 0413-2002, DIN 30670-1991, GB/T 23257-2009, 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

Internal Coating

• 
• 

Internal Coating	Coating Standard
Internal Liquid Epoxy Coating	API RP 5L2-2002, DEP 31.40.30.35-Gen-2005
Single Layer FBE	API RP 5L7-1988
2LPE/2LPP Coating	SY/T 0413-2002, GB/T 23257-2009, ISO 21809-1-2009
Internal Cement Lining	BS 534-1990, AWWA C205-2000
Bitumen Coating	BS 534-1990

The 3PE coating including the below steps



• First:fusion bond epoxy (FBE>100 um) layer
• 
• Second:adhesive layer (between 170um and 250um)
• 
• Third:between 2.5mm and 3.7mm polyethylene

SY/T 0413-2002



OD DN	fusion bond epoxy um	adhesive layer um	Minimum thickness of coating/mm
			Ordinary Class	Enhancement class
DN≤100	≥120	≥170	1.8	2.5
100<DN≤250			2.0	2.7
250<DN<500			2.2	2.9
250≤DN<800			2.5	3.2
DN≥800			3.0	3.7