1. Lapho ukhetha isisekelo sepayipi kanye ne-hanger, ukusekela okufanele kanye nesiphanyeko kufanele kukhethwe ngokuya ngosayizi womthwalo kanye nesiqondiso sephuzu lokusekela, ukugudluzwa kwepayipi, noma ngabe izinga lokushisa elisebenzayo liyi-insulated futhi libandayo, kanye nempahla ye- iphayiphi:

2. Lapho uklama izisekelo zamapayipi nama-hangers, izinsimbi zamapayipi ezijwayelekile, izisekelo zamapayipi neziphanyeko zamapayipi kufanele zisetshenziswe ngangokunokwenzeka;

3. Izisekelo zamapayipi ashiselwe kanye neziphanyeko zamapayipi zonga insimbi kunezisekelo zamapayipi ohlobo lwe-clamp neziphanyeko zamapayipi, futhi kulula ukuwenza nezindlela zokwakha. Ngakho-ke, ngaphandle kwalezi zimo ezilandelayo, izinsimbi zamapayipi ezishiselwe kanye neziphanyeko zamapayipi kufanele zisetshenziswe ngangokunokwenzeka;

1) Amapayipi enziwe nge-carbon steel enezinga lokushisa eliphakathi epayipini elilingana noma elingaphezu kwama-degree angu-400;

2) ipayipi lokushisa eliphansi;

3) Amapayipi ensimbi engxubevange;

4) Amapayipi okudingeka ahlakazwe futhi alungiswe njalo ngesikhathi sokukhiqiza;