steel pipe manufacture

Bearing the inner and outer rings, steel ball material for the bearing steel (vacuum heat treatment). Most of the bearings, the use of JIS steel in the SUJ2, that is, the domestic chrome steel (GCr15). SUJ2 chemical composition, in the world, as the bearing material has been standardized. For example: with the AISL52100 (US), DIN100Cr6 (West Germany), BS535A99 (UK), etc. are the same kind of steel. The use of the material, effectively improve the bearing torque performance, reduce noise and prolong life. However, in the wet or high temperature environment, the need to use martensitic stainless steel. If you need 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 whatsapp:8618865257943 http://jysteelpipe.en.alibaba.com

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 ...

              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                         ...

Steel pipe material comparison table We know that the material standards in each country are not the same. So, how to find the corresponding material required by the customer? Here, we posted a standard correspondence table for each country. Hope can help everyone. If you need steel pipes,or have other questions,just contact us. Liaocheng Development Zone Jin Yun Steel Pipe Co.,Ltd Email:jysales01@lcjypipe.com WhatsApp：8618865257943 Skype：Alice（steel pipe factory） website：http://jysteelpipe.en.alibaba.com steel pipe GB JIS ASTM DIN 牌号 牌号 标准号 钢号 标准号 carbon steel pipe （ Q235 ） GGP G3452 (A53 钢种  F) (St33) 1.0033 DIN1626 STPY41 G3457 A283-D 10 STPG38 G3454 A135-A (St37) 1.011 DIN1626 A53-A STPG38 G3456 A106-A St37-2 1.0112 DIN17175 STS38 G3455 St35.8 1.0305 DIN1629/4 St35.4 1.0309 STB30 G3461 A179-C St35.8 1.0305 DIN17175 A214-C STB33 G3461 A192 St35.8 1.0305 DIN17175 A226 STB35 G3461 St35.8 1.0305 DIN17175 20 S...

           Types of steel pipes/tubes The steel pipe can be classified according to the rolling process, whether there is a seam and a cross-sectional shape. According to the rolling process classification, the steel pipe can be divided into hot-rolled steel pipe,cold drawn steel pipe and cold-rolled steel pipe; according to whether there's a seam,steel pipe is divided into seamless steel pipe and welded steel pipe, which commonly welded pipe can be divided into high-frequency welded pipe , Straight seam submerged arc welded pipe, spiral submerged arc welded pipe 3 kinds by weld type.      seamless steel pipe                                          welded steel pipe Seamless steel pipe has a hollow section, a large number of pipes used for conveying fluid, such as the transmission of oil, natural gas, gas, water and some soli...