Standardkpụrụ EN877 na-akọwapụta ọrụ achọrọ nkenkedo ígwè ọkpọkọ, akwa akwananjikọ haeji na ike ndọda mmiri usoro na ụlọ.EN877:2021bụ ụdị ọkọlọtọ kachasị ọhụrụ, dochie EN877: ụdị 2006 gara aga. Isi ihe dị iche n'etiti ụdị abụọ a n'ihe gbasara nnwale bụ ndị a:
1. Ogo ule:
TS EN 877: 2006: Na-enyocha akụrụngwa akụrụngwa yana akara akara nke ọkpọkọ na akwa akwa.
TS EN 877: 2021: Dabere na nnwale mbụ, agbakwunyere nnwale nnwale maka arụmọrụ mkpuchi ụda, nguzogide corrosion kemịkalụ, nguzogide ọkụ na akụkụ ndị ọzọ nke sistemu pipeline.
2. Ụzọ nnwale:
EN877: 2021 na-emelite ụfọdụ ụzọ nnwale iji mee ka ha nwekwuo sayensị na ezi uche, dị ka:Nnwale nguzogide corrosion kemịkalụ: A na-eji ngwọta nnwale ọhụrụ na ụzọ nnwale, dị ka iji pH2 sulfuric acid ngwọta kama nke mbụ hydrochloric acid ngwọta, na-agbakwunye corrosion eguzogide ule maka ọzọ chemicals.
Nnwale arụmọrụ Acoustic: agbakwunyere ule nyocha maka arụmọrụ mkpuchi ụda nke sistemu pipeline, dị ka iji usoro ọkwa nrụgide ụda tụọ ụda mkpuchi nke sistemu pipeline.
Nnwale arụmọrụ ọkụ: agbakwunyere ule nyocha maka ịrụ ọrụ ọkụ ọkụ nke usoro pipeline, dị ka iji usoro nkwụsị ọkụ ọkụ iji nwalee iguzosi ike n'ezi ihe nke usoro pipeline n'okpuru ọnọdụ ọkụ.TS EN 877: 2021 na-eji agba nwere ọkwa na-eguzogide ọkụ A1
3. Nnwale chọrọ:
TS EN 877: 2021 abawanyela ihe nyocha chọrọ maka ụfọdụ ihe ngosi arụmọrụ, dị ka:Ike tensile: sitere na 150 MPa ruo 200 MPa.
Ogologo oge: gbagoro site na 1% ruo 2%.
Nguzogide corrosion kemịkalụ: agbakwunyere nguzogide corrosion maka ihe ndị ọzọ kemịkalụ, dị ka ihe nguzogide corrosion chọrọ maka ihe alkaline dị ka sodium hydroxide na potassium hydroxide.
4. Akuko nnwale:
EN877: 2021 nwere ihe siri ike chọrọ na ọdịnaya na usoro nke akụkọ nnwale, dị ka:Achọ ka akụkọ nnwale ahụ tinye nkọwa zuru ezu dịka ụzọ nnwale, ọnọdụ nnwale, nsonaazụ ule na nkwubi okwu.
A chọrọ ka ụlọ ọrụ nyocha tozuru oke wepụta akụkọ nnwale ahụ. Ọmụmaatụ,DINSEN bụ CASTCO kwadoro ya.
Standardkpụrụ EN877: 2021 zuru oke ma sie ike na nnwale karịa ọkọlọtọ EN877: 2006, na-egosipụta mmepe teknụzụ kachasị ọhụrụ na ihe ahịa chọrọ na ụlọ ọrụ ọkpọkọ nkedo. Mmezu nke ọkọlọtọ ọhụrụ ahụ ga-enyere aka melite mma nke ngwaahịa ọkpọkọ nke nkedo ma kwalite nchekwa na ntụkwasị obi nke ụlọ usoro drainage.
EN877: 2021 na EN877: 2006
Oge nzipu: Mar-17-2025
