JIS Standard Steel Rail imapangidwa makamaka ndi mutu, phazi, mkati ndi m'mphepete. Mutu ndi gawo lapamwamba kwambiri la njanji, kusonyeza mawonekedwe a "V", omwe amagwiritsidwa ntchito kutsogolera malo omwe ali pakati pa magudumu; phazi ndilo gawo lotsika kwambiri la njanji yanjanji, kusonyeza mawonekedwe athyathyathya, omwe amagwiritsidwa ntchito pothandizira kulemera kwa katundu ndi sitima; Mkati ndi dongosolo lamkati la njanji njanji, kuphatikizapo pansi njanji, ziyangoyango mantha-absorbing, tayi mipiringidzo, etc., amene angapangitse njanji amphamvu, pamene amasewera udindo wa mantha mayamwidwe ndi kusunga tolerances; m'mphepete mbali ndi m'mphepete mbali ya njanji njanji , poyera pamwamba pa nthaka, makamaka ntchito kumwazikana kulemera kwa sitima ndi kupewa kukokoloka kwa njanji zala.