Dub walnut yog abrasion-resistant, lwj-resistant, thiab tsis yooj yim deformed;yooj yim kom qhuav, yooj yim los tsim, thiab yooj yim rau kua nplaum nrog.Nws tuaj yeem siv rau kev hloov pauv huab cua ib puag ncig yam tsis muaj kev tawg thiab lwm yam teeb meem.
Cov ntoo grain yog qhov tshwj xeeb, cov qauv zoo siab rau lub qhov muag, cov yas muaj zog, nws tsis yooj yim rau deformed los yog tawg, compression kuj thiab khoov kuj yog qhov siab, thiab cov rooj tog ua tau zoo heev.