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国内钢厂更是集体沦为海外矿山的长工 钢铁行业原材料安全机制亟需完善
来源:http://www.xjfktvu.com 发布时间:2012/6/27 11:08:12 浏览次数:

螺纹钢 Ф28 HRB335 首钢长治 4420 - 货稀少
螺纹钢 Ф32 HRB335 首钢长治 4420 - 货少
螺纹钢 Ф12 HRB335 海鑫 4360 -

交货状态 代号 说明
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) **后冷加工之后不进行热处理, 从而管子只可能进行很小的变形。 在硬伤尚未解决的同时,国内各大银行也不甘寂寞,纷纷向曾经红极一时的钢铁行业插入了无数的吸血管,正在高速的吸取本已孱弱的钢铁业仅剩的养份。小口径螺旋管
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(软) **后热处理之后进行小变形量的冷加工, 对钢管再加工时允许有限的冷变形(例如: 弯曲, 扩口)
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.
冷加工后消除应力退火 **后冷加工后在Acl点以下进行退火, 以消除冷加工应力。 www.xjfktvu.com
Annealed GBK(+A) The last Cold forming process is followed by annealing in a controlled atmosphere.
退火 **后冷加工之后,钢管在保护气体下进行完全退火。
Normalized NBK(+N) The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.
正火 **后冷加工之后,钢管在保护气体下进行正火。

其三,自从进口铁矿石年度长协定价模式被破坏之后;我国钢厂自此面临着不断上涨的原材料成本侵蚀,国内钢厂更是集体沦为海外矿山的“长工”;在巨大的产能需求下,我国钢铁行业原材料安全机制亟需完善,否则,国内钢厂要想摆脱被外商控制的原材料成本钳制几乎是不可能。
 

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