Raws li cov khoom ntawm lubcov yeeb nkab fittings, cov kav dej hnav-tiv taus tau muab faib ua pawg hauv qab no:

1. Polyethylene hnav-resistant raj rau ore slurry thauj.

2. Polymer ceramic hnav-resistant raj rau desulfurization slurry.

3. Bimetal surfacing hnav-resistant yeeb nkab rau kev thauj mus los hauv hiav txwv xuab zeb.

4. Bimetallic high-chromium alloy hnav-resistant raj, siv rau fais fab nroj tsuag thee hmoov.

5. Cov khoom siv hluav taws xob siv hluav taws xob siv hluav taws xob yog siv rau kev thauj mus los ntawm silicon hmoov.

6. Roj hmab hnav-resistant raj rau beneficiation cog.

7. Cam khwb cia pob zeb hnav-resistant yeeb nkab rau cov hmoov hmoov thauj mus los.

8. Vine-burning coj-resistant yeeb nkab, siv nyob rau hauv thee ntxhua khaub ncaws.

9. Ceramic patch hnav-resistant raj, siv rau ya tshauv thauj mus los.

10. Yas-lined hnav-resistant yeeb nkab rau tshuaj dej.

11. Nickel-tungsten alloy hnav-resistant raj, siv rau kev kub ceev thiab kev thauj mus los hnyav.