Qaraxa Shenhai-Caddaynta
1. Qalab koronto oo kala duwan ayaa loo kala saaray iyadoo lagu saleynayo heerarka badbaadada ee loo isticmaalo jawiga gaaska qarxa, kuwaas oo loo qaybiyay aag: Aagga 0, Aagga 1, iyo Aagga 2.
2. Kala soocidda gaasta ama uumiga qarxa isku darka ayaa u kala baxa saddex qaybood: IIA, IIB, iyo IIC. Kala soocidaani waxay ugu horayn ku salaysan tahay Farqiga Badbaadada ee Tijaabada ugu badan (MESG) ama saamiga hadda ugu yar ee dabka (MICR).
3. The heerkulka kooxaynta hurinta dhexdhexaadiye gaar ah waxa loo qaybiyaa dhawr saf. Kuwaas waxaa ka mid ah T1: ka hooseeya 450°C; T2: 300°C < T ≤ 450°C; T3: 200°C < T ≤ 300°C; T4: 135°C < T ≤ 200°C; T5: 100°C < T ≤ 135°C; T6: 85°C < T ≤ 100°C.