Amapayipi ensimbi angenamthungo angahlukaniswa abe amapayipi ensimbi angenamthungo ajwayelekile e-ASTM American, amapayipi ensimbi angenamthungo e-DIN yaseJalimane ajwayelekile, amapayipi ensimbi angenamthungo e-JIS Japanese, amapayipi ensimbi kazwelonke e-GB angenamthungo, amapayipi ensimbi angenamthungo e-API nezinye izinhlobo ngokwezindinganiso zawo. Amapayipi ensimbi angenamthungo asezingeni le-ASTM American angaphakathi Ivamile emazweni omhlaba futhi inezinhlobo namagatsha amaningi.
Manje amapharamitha afanelekile wepayipi lensimbi elingenamthungo le-ASTM i-ASTM stm a210/a210m/astm sa210/sa-210s American standard seamless ipayipi ahlelwe kanje:I-ASTM A210/A210M/ASME SA-210/SA-210M Inhloso: ifanele amashubhu okubhayela namabhoyili Amapayipi omkhuhlane, okuhlanganisa iziphetho zokuphepha, amaphayiphi asekelayo kanye namapayipi asekelayo, kanye nobuncane bodonga obuwugqinsi lwamapayipi ensimbi angenamthungo amaphakathi amapayipi okushisa aphezulu. Ikakhulukazi ikhiqiza amabanga amapayipi ensimbi: A-1, C, njll. Ngemva kokuxoxisana, amanye amabanga amapayipi ensimbi anganikezwa.
Inqubo yokukhiqiza ipayipi lensimbi engenamthungo:
Amapayipi ensimbi angenamthungo ahlukaniswe abe amapayipi ensimbi angenamthungo agingqiwe ashisayo, amapayipi ensimbi adonswa ngokubanda angenamthungo, njll. ngokwenqubo yawo yokukhiqiza. Ububanzi bamapayipi ensimbi angenamthungo ngokuvamile buyi-406mm-1800mm, kanti ukujiya kodonga kungu-20mm-220mm. Ngokusebenzisa kwabo, zingahlukaniswa zibeamapayipi ensimbi angenamthungo wezakhiwo, amapayipi ensimbi angenamthungo oketshezi, amapayipi ensimbi angenamthungo ama-boilers, futhiamapayipi ensimbi angenamthungo amapayipi kawoyela.