Ake sifunde ngamapayipi egesi yemvelo.

Izinto: X42, X52, X60 (i-API 5L standard steel grade), ehambisana ne-Q345, L360, njll. eShayina;

Izici: Izindleko eziphansi, amandla aphezulu, afanelekela amapayipi ahamba ibanga elide (umfutho ophezulu, izimo zobubanzi obukhulu);

Imikhawulo: Kudinga ukwelashwa kokulwa nokugqwala (njengongqimba lwe-3PE lokulwa nokugqwala) ukuze kugwenywe ukugqwala kwenhlabathi/okuphakathi nendawo.

Amapayipi e-Polyethylene (PE)

Izinto: PE80, PE100 (ezihlelwe ngokwezinga lamandla e-hydrostatic esikhathi eside);

Izici: Imelana nokugqwala, kulula ukwakha (ukushisela okuncibilika ngokushisa), ukuguquguquka okuhle;

Izicelo: Ukusatshalaliswa kwedolobha, amapayipi egceke (umfutho ophakathi nophansi, izimo ezincane zobubanzi).

Amapayipi Ensimbi Engagqwali

Izinto: 304, 316L;

Izici: Ukumelana nokugqwala okunamandla kakhulu;

Izicelo: Igesi yemvelo enesibabule esiningi, amapulatifomu asogwini lolwandle, nezinye izimo ezikhethekile zokugqwala.

Izici Zobuchwepheshe Eziyinhloko

Ukuvala Nokuxhuma:
Amapayipi ahamba ibanga elide: Ukuxhumeka okushiselwe (ukushisela kwe-arc okucwiliswe emanzini, ukushisela okuvikelwe ngegesi) kuqinisekisa ukuvalwa komfutho ophezulu;
Amapayipi anengcindezi ephakathi nendawo kanye naphansi: Ukuxhumeka okuncibilika ngokushisa (amapayipi e-PE), ukuxhumeka okunezintambo (amapayipi ensimbi yekhabhoni/ensimbi engagqwali anobubanzi obuncane).

Izindlela Zokuvikela Ukugqwala:
Ukuvikelwa kokugqwala kwangaphandle: ungqimba lwe-3PE olulwa nokugqwala (amapayipi ahamba ibanga elide), uqweqwe lwe-epoxy powder;
Ukuvikelwa kokugqwala kwangaphakathi: Ukwembozwa kodonga lwangaphakathi (kunciphisa ukufakwa kokungcola kwegesi yemvelo), umjovo wokuvimbela ukugqwala (amapayipi ane-sulfur eningi).

Izindawo Zokuphepha: Zihlonyiswe ngezinzwa zokucindezela, ama-valve okuvala okuphuthumayo, kanye nezinhlelo zokuvikela i-cathodic (ukuvimbela ukugqwala kwe-electrochemical enhlabathini); Amapayipi akude ahlonyiswe ngeziteshi zokusabalalisa kanye neziteshi zokunciphisa ingcindezi ukuze kufezwe ukulawulwa kwengcindezi kanye nokusatshalaliswa kokugeleza.

Izindinganiso Zemboni
Okwamazwe ngamazwe: I-API 5L (amapayipi ensimbi), i-ISO 4437 (amapayipi e-PE);
Ekhaya: GB/T 9711 (amapayipi ensimbi, alingana ne-API 5L), GB 15558 (amapayipi e-PE)