KWK STEEL CO.,LTD ISO9001:2008 Tel: +86-576-88805030 Fax: +86-576-88809380 E-mail: [email protected]www.kwksteel.com Address: E801, Xintai Square, Taizhou, Zhejiang, China 318000 KWK STEEL FEATURED PRODUCT DIN Seamless Precision Steel Tube Size: O.D.: 6.0-650.0mm W.T.: 1.0-65.0mm Length: Max.12000mm Description: DIN Seamless precision steel tube, cold drawn and cold rolled seamless. And we've been featured involved in this kind of product. We exported large quantity to many countries. Customized technical specification for the providing of seamless precision tubes. This kind of tube concern seamless steel cold drawn tubes suitable for the telescopic, piston rods, hydraulic-oleo dynamic cylinder manufacturing and fix their dimensions, tolerances, chemical composition, mechanical properties and delivery technical conditions. As well, we supply our customers extra requirements stricter than standard like Tolerance, Eccentricity, Straightness, Ovality, etc.
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DIN Seamless precision steel tube, colddrawn and cold rolled seamless. And we'vebeen featured involved in this kind of product.We exported large quantity to manycountries.
Customized technical specification for theproviding of seamless precision tubes.
This kind of tube concern seamless steel colddrawn tubes suitable for the telescopic,piston rods, hydraulic-oleo dynamic cylinder manufacturing and fix their dimensions,tolerances, chemical composition, mechanical properties and delivery technicalconditions.
As well, we supply our customers extrarequirements stricter than standard likeTolerance, Eccentricity, Straightness,Ovality, etc.
Address: E801, Xintai Square, Taizhou, Zhejiang, China 318000
Final Supply ConditionSymbol Designation Description
BK Cold finished(hard)Tubes do not undergo heat treatment following thefinal cold forming and, thus, have a rather highresistance to deformation.
BKW Cold finished(soft)
The final heat treatment is followed by cold drawinginvolving limited deformation. Appropriate furtherprocessing allows a certain degree of coldforming(e.g. bending, expanding)
BKS Cold finished andstress-relieved
Heat treatment is applied following the last coldforming process, subject to appropriate processingconditions, the increase in the residual stressesinvolved enables both forming and machining to acertain degree.
GBK Annealed The last cold forming process is followed byannealing in a controlled atmosphere.
NBK NormalizedThe last forming process is followed by annealingabove the upper transformation point in a controlledatmosphere.