E-mail:raysales2@raysteeltube.com    Mol+86-150-6196-5293
NEWS  AND EVENTS
You can learn more about our company's lastest news and events in there.
You are here: Home » News » Product News » Seamless pipe for low and high temperature service
Contact Us
ADD : ChuangSheng Road. Luoyang Industrial Zone,Luoyang Town, Wujin District, Changzhou city. Jiangsu Province, China
TEL : +86-519-88522885
         +86-519-85585188

FAX : 86-025-8888888
E-mail : raysales5@raysteeltube.com

Seamless pipe for low and high temperature service

Views:7     Author:Site Editor     Publish Time: 2017-10-25      Origin:Site

Seamless steel pipe has five technical delivered conditions. They are BK , BKW , BKS, GBK and NBK. Another expression is +C, +LC, +SR,+A, +N.

BK or +C temperature service means Cold Finished (Hard). There is no need heat temperature treatment for the last process of cold drawn or cold rolled craft.

BKW or +LC temperature service means cold finished (soft). The seamless steel pipes will get slight and low temperature treatment in the last process either cold drawn or cold rolled craft.

BKS or +SR temperature service means cold finished and stress-relived. Get one temperature below Ac1, keep this temperature in certain time period. Let the steel pipes recovery its condition and release the internal stress.

seamless steel pipe.png

GBK and +A temperature service means annealed heat treatment. The organization will get recrystallization after treatment. The temperature will be up to Ac3, And keep warm and let it is cooling slowly in oven. After less than 500℃ let it is cooling in the air.

steel pipe.pngsteel pipe.jpg

NBK or +N temperature service means normalized heat treatment. The temperature should be higher 30℃ to 50℃ while it attaches to Ac3 or Accm temperature. It will be cooling in the air or by ban and cold water. So it is cooling faster than GBK heat temperature treatment.

4.png

Different temperature services of seamless steel tubes have different function. Pls check the mechanical properties of tubes under the different delivery conditions.

123123123.png


CONTACT US

Add : Chuangsheng Road. Luoyang Industrial Zone,Luoyang Town, Wujin District, Changzhou city. Jiangsu Province, China

QUICK LINK

PRODUCTS CATEGORY

CONTACT INFO

 Tel  :+86-519-88522885
 Tel : +86-519-85585188
 Fax : +86-519-88522598
 E-mail : raysales2@raysteeltube.com
 Skype :+86-150-6196-5293

SUBSCRIBE

Be the first to know about our lastest products.
Copyright © 2017 Changzhou Raymond Steel Tube Co.,Ltd. All rights reserved.   Supported by Mmytech     Manage Entrance   Sitemap

Leave A Message