1. neprekinjeno varjene jeklene cevi
Jeklena cev z ravnim zvarom, ki ga proizvaja neprekinjeni postopek izdelave jeklenih cevi (to je vrsta neprekinjene jeklene cevi) .
2. PSL1 Električne varjene cevi
Kadar je jeklena ocena višja od x42, je treba zvar in celotno območje toplotne pregrade obravnavati podobno kot normalizacijo, razen če se dobavitelj in kupec ne strinjata, da je mogoče uporabiti toplotno obdelavo ali kombinacijo toplotne obdelave in kemične sestave .
When making such a substitution, the manufacturer should confirm the effectiveness of the process selected by both parties. It can include, but is not required to specify, hardness tests, microstructure assessments or mechanical property tests. For steel grades not higher than X42, the weld should be treated with similar heat treatment, or the steel pipe should be treated with appropriate heat processing technology so that no untempered martenzitna struktura ostaja .
OPOMBA: V proizvodnem procesu električnih varjenih jeklenih cevi jeklene cevi prehajajo skozi zrak, normalizacija pa je običajno opredeljena kot "hlajenje v miru", zato se uporablja izraz "podobno normalizaciji toplotne obdelave" .
3. Električne varjene cevi psl2 psl2
Najmanjša frekvenca varilnega stroja, ki se uporablja za postopek električnega varjenja, mora biti 100KHz .
The weld seam and the entire heat barrier zone of all steel grades should be treated similar to normalizing, unless the supplier and the buyer agree that heat treatment or a combination of heat treatment and chemical composition can be used instead. When making such a substitution, the manufacturer should confirm the effectiveness of the process selected by both parties. It can include, but is not required to stipulate, hardness testing, microstructure evaluation or Mehansko testiranje lastnosti .
4. laserske varjene cevi
Jeklene cevi, varjene z laserskim postopkom varjenja z ravnim zvarkom .
The weld seam and the entire heat barrier zone of laser welded pipes should be treated similar to normalizing, unless the supplier and the buyer agree to select an alternative process. When making such substitutions, the manufacturer shall confirm the effectiveness of the process selected by both parties. It can include, but is not required to include, hardness testing, microstructure evaluation or mechanical property testiranje .
OPOMBA: V procesu proizvodnje laserskih varjenih cevi jeklena cev prehaja skozi zrak, normalizacija pa je ponavadi opredeljena kot "hlajenje v še vedno zraku", zato se uporablja izraz "podobno kot normalizacija toplotne obdelave" .
5. Ravni šiv potopljen lok varjena cev
Jeklena cev z ravnim zvarjem, varjenim s samodejnim potopljenim postopkom varjenja . Obstaja več kot en notranji in zunanji zvar
