Ipayipi lensimbi engenamthungo elisetshenziswa kabanzi emhlabeni liyipayipi lekhwalithi ephezulu futhi lisetshenziswa kabanzi embonini, embonini yamakhemikhali, ekwakhiweni nakweminye imikhakha.Amapayipi ensimbi angenamthungo athandwa yimboni ngenxa yamandla awo aphezulu, ukumelana nokugqwala, nokumelana nokushisa okuphezulu.Kukhona futhi izindinganiso ezihambisanayo mayelana nokucaciswa nokuqina kodonga.Okulandelayo uhlu lwezicaciso zamapayipi ensimbi angenamthungo namazinga okuqina kodonga:
Imininingwane:
1. Amazinga aseMelika:I-ASTM A106, I-ASTM A53, I-API 5L, ASTM A192,I-ASTM A210, I-ASTM A213, njll.;
2. Izindinganiso zaseJapane: JIS G3454, JIS G3455, JIS G3456, JIS G3461, JIS G3462, njll;
3. Izindinganiso zesiJalimane: I-DIN 1626, i-DIN 17175, i-DIN 2448, i-DIN 2391, njll.;
4. Izindinganiso zaseBrithani: BS 1387, BS 3601, BS 3059, BS 6323, njll;
5. Amazinga aseYurophu:I-EN 10210, EN 10216, EN 10297, njll.;
6. Izindinganiso zesiShayina:I-GB/T 8162, GB/T 8163, GB/T 3087, GB/T 5310, GB/T 6479, njll.
Izinga lokujiya kodonga:
1. SCH10, SCH20, SCH30, SCH40, SCH60, STD, SCH80, XS, SCH100, SCH120, SCH140, SCH160, XXS, njll.;
2. WT: 2.0-60mm, SCH10S, SCH40S, SCH80S, njll.;
3. Endabeni yokushoda kwezinto zokusetshenziswa noma isidingo esikhulu, amanye amapayipi amancane angase adinge ukuhlelwa ngokwezidingo ezithile.
Okungenhla yizicaciso kanye namazinga okuqina odongeni amapayipi ensimbi angenamthungo.Izimboni ezihlukene kanye nezidingo zokusetshenziswa zidinga ukukhethwa kokucaciswa okuhambisanayo nokuqina kwezindonga.Ungakhetha ukucaciswa okuhambisana nezidingo zakho zokuthenga.