Amapayipi ensimbi angenamthungo athatha isikhundla esibalulekile embonini yesimanje futhi asetshenziswa kabanzi ekwakheni, ekukhiqizeni imishini, e-petrochemical nakwezinye izinkambu.I-EN 10210icacisa ngqo amapayipi ensimbi angenamthungo ezakhiwo, phakathi kwawo i-BS EN 10210-1 iyincazelo ethile yezinsimbi zesakhiwo ezingezona i-alloy ezishisiwe kanye nezinsimbi ezincane. Amabanga ajwayelekile kule nqubo afaka phakathi i-S235GRH, i-S275JOH, i-S275J2H, i-S355JOH kanye ne-S355J2H.

Okokuqala, i-S235GRH iyinsimbi yezinga eliyisisekelo, esetshenziswa kakhulu ezingxenyeni zesakhiwo ngaphansi kokucindezeleka okuphansi kanye nendawo yokushisa kwegumbi. Njengoba inamandla okukhiqiza angu-235MPa, inokushibilika okuhle kanye nokwakheka okubandayo, futhi ifaneleka ekwakhiweni okujwayelekile kanye nezakhiwo zemishini.

Okulandelayo yi-S275JOH kanye ne-S275J2H. I-S275JOH inokuqina okuhle ku--20℃ kanye namandla okukhiqiza angu-275MPa, futhi ivame ukusetshenziselwa ukwakha izakhiwo kanye namaphrojekthi amabhuloho anemithwalo ephakathi nendawo. I-S275J2H inokuqina okungcono komthelela ku--20℃, futhi ifanele izingxenye zesakhiwo ezidinga isici sokuphepha esiphezulu.

S355JOHfuthiS355J2Hziyizinsimbi ezinamandla aphezulu. I-S355JOH inokuqina okuhle kakhulu kokubili ekushiseni kwegumbi kanye nasekushiseni okuphansi (-20℃), enamandla okukhiqiza angu-355MPa, futhi isetshenziswa kabanzi kumaphrojekthi esakhiwo anokucindezeleka okuphezulu kanye nabalulekile, njengezakhiwo eziphakeme namabhuloho amakhulu. I-S355J2H inokuqina okuphezulu komthelela ku--20℃, futhi ifaneleka ezindaweni ezibandayo kakhulu noma kumaphrojekthi adinga isiqinisekiso sokuphepha esengeziwe.

Izinga le-EN 10210 aligcini nje ngokucacisa ukwakheka kwamakhemikhali kanye nezakhiwo zemishini zamapayipi ensimbi, kodwa futhi libeka phambili izidingo ezithile zokubekezelelana kobukhulu, ikhwalithi yobuso, ukuhlolwa okungonakalisi, njll. Lokhu kuqinisekisa ukuhambisana nokuthembeka kwamapayipi ensimbi ngesikhathi sokukhiqiza nokusetshenziswa.

Amapayipi ensimbi angenamthungo akhiwa ubuchwepheshe bokugoqa okushisayo, obuwanikeza izakhiwo ezinhle kakhulu zemishini kanye nokunemba okuhle kobukhulu. Inqubo yokugoqa okushisayo ingasusa ukucindezeleka ngaphakathi kwepayipi lensimbi, ithuthukise isakhiwo sensimbi, futhi ithuthukise ukusebenza kwayo okuphelele. Uma kuqhathaniswa namapayipi ensimbi ahlanganisiwe, amapayipi ensimbi angenamthungo anamandla aphezulu okucindezela, ukugoba kanye nokugoba, futhi afanelekela ukwesekwa kwesakhiwo kanye nokuthuthwa koketshezi ngaphansi kwezimo zokusebenza ezahlukahlukene eziyinkimbinkimbi.

Ngokuvamile, amapayipi ensimbi angenamthungo akhiqizwa ngokwezindinganiso ze-EN 10210 abonisa ukusebenza okuhle kakhulu emasimini okwakha kanye nezimboni. Amapayipi ensimbi anezinga ezifana ne-S235GRH, S275JOH, S275J2H, S355JOH, kanye ne-S355J2H anezici zawo futhi angahlangabezana nezidingo zamaphrojekthi ahlukene. Ukusetshenziswa kwawo okubanzi akugcini nje ngokuthuthukisa ikhwalithi nokuphepha kwamaphrojekthi, kodwa futhi kukhuthaza intuthuko kanye nokusungula izinto ezintsha zobuchwepheshe bezinto zensimbi. Ukukhetha amapayipi ensimbi angenamthungo anezinga kanye nemininingwane efanele kubalulekile ekuqinisekiseni ukuzinza kwesikhathi eside kanye nezinzuzo zomnotho zamaphrojekthi.