Dib-u-cusboonaysiinta dalabka injineernimada, tuubo bir ah oo daawaha laga sameeyayA333 GR6, qeexitaanku waa 168.3*7.11, iyotuubo bir ah oo kaarboon ah GB/T9948, 20#, qeexitaanku waa 114.3*6.02, iwm.

Kuwa soo socda ayaa soo bandhigaya heerarka iyo agabka ay la kulmi doonaan dalabaadka injineernimada:

20# GB8163 tuubo bir ah oo aan kala go 'lahayn oo gaadiid dareere ah

Maxay ka dhigan tahay walxaha tuubooyinka birta ah ee aan kala go 'lahayn? Maaddadu sidoo kale waa heerka aan inta badan nidhaahno, sida 20#, 45#, kuwaas oo matalaya qaab-dhismeedkooda kiimikada iyo sifooyinka farsamada sida xoogga jiidista, xoogga wax-soo-saarka, iyo heerka ballaarinta. Kuwa soo socda waa agabka tuubooyinka birta ah ee aan kala go'lahayn ee caadiga ah ee la isticmaalo, heerarka wax-soo-saarka iyo isticmaalka uu soo koobay qoraagu.

1.GB/T8162-2018, Tuubooyinka birta ah ee aan kala go 'lahayn ee qaab-dhismeedka, oo inta badan loo isticmaalo injineernimada guud ee qaab-dhismeedka, farsamaynta farsamada, dhismaha iyo meelaha kale. Agabka matalaya: 20#, 45#, q345b, 40Cr, 42CrMo, iwm.;

2. GB/T8163-2018, tuubo bir ah oo aan kala go 'lahayn oo loogu talagalay rarista dareeraha, oo inta badan loo isticmaalo injineernimada dhuumaha oo leh cadaadis hooseeya. Alaab matalaad ah: 20#, q345b;
45# GB8162 tuubo bir ah oo aan kala go 'lahayn oo qaab-dhismeed ah

3.GB/T3087-2017, tuubooyin bir ah oo aan kala go 'lahayn oo kuleyliya cadaadiska hoose iyo kan dhexe, oo inta badan loo isticmaalo in lagu soo saaro qaabab kala duwan oo tuubooyinka uumiga ee aadka u kulul, tuubooyinka biyaha karkaraya ee kuleyliyaha cadaadiska hoose iyo kan dhexe, iyo tuubooyinka uumiga iyo tuubooyinka lebenka ee aadka u kulul ee kuleyliyaha tareenada. Alaabada matala: 10#, 20#, Q355B;
Tuubada kuleyliyaha cadaadiska sare leh ee GB5310, walax 12Cr1MovG ah

4. GB/T5310-2017, tuubooyin bir ah oo aan kala go 'lahayn oo loogu talagalay kuleyliyeyaasha cadaadiska sare leh, oo inta badan loo isticmaalo dusha sare ee kululaynta kuleyliyeyaasha tuubooyinka biyaha ee leh cadaadis sare iyo wixii ka sarreeya. Waxaa jira tuubooyin bir ah oo aan kala go' lahayn oo aan kala go' lahayn oo aan kulayl lahayn. Alaabada matalaadda: 20G, 15CrMoG, 12Cr1MoVG, iwm.;

5. GB/T6479-2018, tuubooyin bir ah oo aan lahayn cadaadis sare oo loogu talagalay qalabka bacriminta kiimikada, oo inta badan loo isticmaalo qalabka kiimikada iyo dhuumaha oo leh heerkul shaqo oo ah -40~400°C iyo cadaadis shaqo oo ah 10~30Ma. Waxaa jira tuubooyin bir ah oo aan lahayn qaab-dhismeedka kaarboonka iyo birta daawaha. Maaddada matasha: q345a-bcde, 20#, 10mowvnb, 15CrMo;

6. GB/T9948-2013, tuubooyin bir ah oo aan kala go 'lahayn oo loogu talagalay dildilaaca batroolka, oo inta badan loo isticmaalo tuubooyinka foornada, beddelayaasha kulaylka iyo dhuumaha ee warshadaha sifeynta batroolka. Alaab matalaad ah: 10#, 20#, Q345, 15CrMo;