hot rolled seamless steel pipe factory under production ..........

Hot Rolled Seamless Steel Pipe Factory Under Production



If you need steel pipes，bearing steel pipes,seamless steel pipe,alloy steel pipe,galvanized pipe,special pipes,just contact us.
Liaocheng Development Zone Jin Yun Steel Pipe Co.,Ltd
Email:jysales01@lcjypipe.com
Wechat:8618865257943
Skype：Alice(steel pipe factory)
http://jysteelpipe.en.alibaba.com

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The delivery status of steel pipe (BK, BKW, BKS, GBK, NBK)

BK, BKW, BKS, GBK, NBK Designation Symbol Description 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 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) 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. Annealed GBK （ +A ） The last Cold forming process is followed by annealing in a controlled atmosphere. Normalized NBK （ +N ） The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. If you need steel ...
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special pipes

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              special pipes   Specialtube is generally divided according to the cross-section, according to the material can be divided into seamless steel special tube, aluminum alloy special tube, plastic special tube. The following describes the main special steel tube. Special steel pipes can be divided into oval shaped steel pipe, triangular shaped steel pipe, hexagonal shaped steel pipe, diamond shaped steel pipe, octagonal shaped steel pipe, semi-circular shaped steel round, unequal hexagonal profiled steel pipe, , Double convex shaped steel pipe, double concave shaped steel pipe, melon shaped shaped steel pipe, conical shaped steel pipe, corrugated shaped steel pipe.                                               special pipe 1                         ...
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