Name		Usage /function	Material
Embedded parts	U type ring	For the hang of chains	Q235 steel with paint coated (or hot dip galvanized)
	Anchor bolt (nut)	For the fixing of marine fender onto the dock	Stainless steel (or hot dip galvanized Q235 steel )
Impingement plate		The impingement plate functions to bear the reaction force generated by the fender system itself, thus reduce its reaction force to the vessel body and reduce the surface force acting across each square meter of vessel body.	Q235 steel with paint coated (or hot zinc / aluminium spray coating)
Veneer		Reduce friction coefficient, thus prevent the vessel body from being damaged by friction.	PE
Rubber spring		To buffer the force acted on the chain, thus prevent the chain from being damaged.	Rubber
Rubber spring chain	Suspension chain	To bear the weight of the impingement plate, thus preventing the rubber fender from drooping.	Q235 steel – hot dip galvanized or paint coated
	Horizontal chain	To prevent the shearing deformation of the fender system.	Q235 steel – hot dip galvanized or paint coated
	Vertical chain	To restrict the stretching of the upper part of the fender, when the lower part of the fender is under stress.	Q235 steel – hot dip galvanized or paint coated
Attachment bolt (nut)		For the linkage between the rubber fender and its parts like impingement plate, and so on.	Stainless steel or Q235 zinc plated steel