Korea Cast Iron Pipe

>
Product Information >
Other >
PE Sleeve

A method that blocks direct contact between corrosive soil
and pipe by cladding 0.2mm thick polyethylene sleeve

Ductile cast iron pipe is prevalently used in a construction site
on waterworks, sewage, and gas even in U.S, Europe, Middle
East, and Japan → proved an excellent anti-corrosive effect on
corrosive soil
폴리에틸렌 슬리브의 특징

An effective and economical method on corrosive deterrence,
possible to construct at construction site → less damage or
deterioration of anti-corrosive film, can simply be restored by
adhesive tape

Excellent anti-corrosive effect on highly corrosive soil

Soil	Osaka	Osaka	Fukuoka	Sapporo	Yokohama
Soil	Reclaimed land	Reclaimed land	Reclaimed land	Reclaimed land	Reclaimed land
Soil character	Clayer soil (seawater effect)	Sand (seawater effect)	Clayer soil (seawater effect)	Marine clay	Marine clay
Pipe Size	400	100, 200	500	100	100
laying period (year)	20	19	29	16	14
ANSI (soil evaluation)	15.5	12.0	15.5	15.5	14.5
Inspection	No corrosion	No corrosion	No corrosion	No corrosion	No corrosion

※ Japan Ductile Iron Pipe Association
부식성 토양에서의 덕타일주철관 내식성(미국)

Pipe Condition	Number of Specimens	Mena Deepest Pitting Rate(in./yr.)	Years to Penetration
Sand Blasted (annealing oxide layer removed)	102	0.025	10
Bare (uncoated)	22	0.0151	17
As-manufactured (Standard Shop Coating)	103	0.0151	24
Polyethylene Encased	150	0.00045	556

Comparing the pitting rates for the unprotected versus polyethylene-encased iron pipes, the results show
that polyethylene encasement is a very effective way to control corrosion on Ductile Iron pipelines in most
corrosive soils. These results have been confirmed through more than 45 years of successful usage of
polyethylene encasement on tens of millions of feet of water and wastewater lines throughout North
America.