|
Designation |
Symbol |
Description |
|
交貨狀態 |
代號 |
說明（míng） |
|
Cold finished (hard) |
BK（+C） |
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation |
|
冷加工（硬） |
最後（hòu）冷加工之後不進行熱處理， 從而管子隻可能進行很小的變形。 |
|
Cold finished (Soft) |
BKW
（+LC） |
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding) |
|
冷加工（軟） |
最後熱處理之後進行（háng）小變形量的冷加工（gōng）， 對鋼管再加工（gōng）時允許有（yǒu）限的冷變（biàn）形（例如： 彎曲， 擴口） |
|
Cold finished and stress-relieved |
BKS（+SR） |
Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
|
冷加工後（hòu）消除（chú）應力退火 |
最（zuì）後冷加工後（hòu）在Acl點以下進行（háng）退火， 以消除冷加工應力。 |
|
Annealed |
utf-8（+A） |
The last Cold forming process is followed by annealing in a controlled atmosphere. |
|
退火 |
最後冷加工之後，鋼管在（zài）保護氣體下進行（háng）完全退火。 |
|
Normalized |
NBK（+N） |
The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
|
正火 |
最後冷加工之（zhī）後，鋼管在保護氣體下進行正火。 |
