+86 519 88771678   +86 519 88772588  tube@czchengxin.com
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Address: Xinnan Village,Yaoguan Town,Wujin Dist,Changzhou City,Jiangsu Province,China

Tel: +86 519 8877 1678  

Fax: +86 519 8877 4001

Cell: +86 13616125265(Wechat)

E-amil:  tube@czchengxin.com

News
  • What is the straightening principle of steel pipes? The purpose of the straightening process is to eliminate the bending of steel pipes during rolling, transportation, cooling, and heat treatment processes, and also to reduce the ovality of steel pipes.The straightening ef… 2024-1-18 13:50:55
  • What are the types of defects in steel pipes? The main surface defects of steel pipes include: external folding, cracking, indentation (pits, scars), scratches (green lines or spirals), ears, corrugated surfaces, and rolling folds. The main surface defects include in… 2023-11-28 13:18:43
  • Alloy structural steel, alloy spring steel These two types of steel are generally represented by two Arabic numerals at the beginning of the grade to indicate the average carbon content (in tens of thousands), and their average alloy element content (mass fraction… 2023-9-12 16:02:21
  • Skiving&roller burnishing machine put into use A new skiving&roller burnishing machine was put into use at the end of March.2023. Max skving length: 9 metersDiameter range: 50mm-250mm. 2023-3-28 13:56:45
  • A new heat treating furnace was put into use A new heat treating furnace that can deal with tubes with length of 15 meters max was put into use recently. 2023-1-2 14:10:23
  • New workshop put into use The new workshop with automatic saw cutting machining and polishing machine have been put into daily use. This workshop is for cutting, polishing, inspection&packing, and container loading. 2022-12-28 9:29:30
  • New automatic saw cutting machine put into use A new automatic saw cutting machine was put into use in December 6th.2022. Max cutting diameter: 300mmMin cutting length: 500mm. 2022-12-16 13:14:20
  • Cold drawing workshop Improvement 2022-9-30 13:42:18
  • New straightening machine installed A new multi-roller straightening machine was installed and put into production since July.2022. Max diameter of tube that can be straightened will reach 250mm. 2022-8-9 9:38:51
  • New sawing machine New automatic sawing machine has been fixed. Max sawing diameter: 185mm 2022-4-20 14:10:41
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Changzhou Chengxin Metal Products Co.,Ltd

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