Spiral Welded Pipes for Underground Gas Pipelines EN10219
Ea ronaspiral welded lipeipike tharollo e nepahetseng bakeng sa merero eo ho eona ho hanyetsanang le kutu le ho tšepahala ha sebopeho li leng bohlokoa. Ts'ebetso e ikhethang ea spiral welding ha e ntlafatse matla a phala feela, empa hape e fana ka sebaka se se nang moeli, ho fokotsa kotsi ea ho lutla le ho hlōleha. Sena se etsa hore li tšoanelehe ka ho khetheha bakeng sa libaka tse thata tse atisang ho kopana le lits'ebetso tsa ka tlas'a lefatše.
Tekanyetso ea EN10219 e netefatsa hore liphaephe tsa rona li etsoa ka nepo le boleng, ho netefatsa hore li ka mamella likhatello le liphephetso tsa lipalangoang tsa khase ea tlhaho. E shebane le ho tšoarella le ho ts'epahala, liphaephe tsa rona tse cheselitsoeng ka spiral li etselitsoe ho fana ka ts'ebetso e tšoarellang nako e telele, ho fokotsa tlhoko ea tlhokomelo khafetsa le ho nchafatsoa.
Thepa ea Mechini
tšepe kereiti | bonyane matla a tlhahiso Mpa | Matla a tšepe | Bonyane bo bolelele % | Matla a fokolang a ts'usumetso J | ||||
Botenya bo boletsoeng mm | Botenya bo boletsoeng mm | Botenya bo boletsoeng mm | ka mocheso oa teko ea | |||||
<16 | ~16≤40 | <3 | ≥3≤40 | ≤40 | -20 ℃ | 0℃ | 20 ℃ | |
S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
S275J2H | 27 | - | - | |||||
S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
S355J2H | 27 | - | - | |||||
S355K2H | 40 | - | - |
Sebopeho sa Lik'hemik'hale
Kereiti ea tšepe | Mofuta oa de-oxidation a | % ka boima, boholo | ||||||
Lebitso la tšepe | Nomoro ea tšepe | C | C | Si | Mn | P | S | Nb |
S235JRH | 1.0039 | FF | 0,17 | - | 1,40 | 0,040 | 0,040 | 0.009 |
S275J0H | 1.0149 | FF | 0,20 | - | 1,50 | 0,035 | 0,035 | 0,009 |
S275J2H | 1.0138 | FF | 0,20 | - | 1,50 | 0,030 | 0,030 | - |
S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
a. Mokhoa oa deoxidation o khethiloe ka tsela e latelang:FF: Tšepe e bolailoeng ka ho feletseng e nang le likarolo tse tlamang tsa naetrojene ka bongata bo lekaneng ho kopanya naetrojene e fumanehang (mohlala, min. 0,020 % kakaretso ea Al kapa 0,015 % e qhibilihang Al). b. Theko e phahameng ea naetrojene ha e sebetse haeba motsoako oa lik'hemik'hale o bontša bonyane kakaretso ea Al content ea 0,020 % ka tekanyo e tlase ea Al/N ea 2:1, kapa haeba likarolo tse ling tse tlamang tsa N li le teng. Lintlha tse tlamang N li tla tlalehoa Tokomaneng ea Tlhahlobo. |
Ho phaella mohahong oa tsona o matsutla-tsutla, liphaephe tsena li bobebe ’me ho bonolo ho li tšoara, e leng ho etsang hore ho kenngoe ka tsela e sebetsang hantle le ho boloka chelete e ngata. Hore na o etsa projeke e ncha ea liphaephe kapa o ntlafatsa sistimi e teng, liphaephe tsa rona tse nang le li-spiral welded li fana ka motsoako o phethahetseng oa matla, ho tenyetseha le ho ipapisa le maemo a indasteri.
Khetha lipeipi tsa rona tse cheselitsoeng ka spiral bakeng sa litlhoko tsa hau tsa lipeipi tsa khase tse ka tlas'a lefatše 'me u be le khotso ea kelello e tlisoang ke ho sebelisa lihlahisoa tse khotsofatsang.EN10219litekanyetso. Tšepa boitlamo ba rona ba boleng le ts'ebetso ho netefatsa polokeho le katleho ea lisebelisoa tsa hau tsa khase.