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  • WRD’S Daily Export – End facing and beveling machine to Southeast Asia

    WRD had produced and installed one 89*6.0 ERW mill line in Brunei last year.  On March 2019, the customer demands an automatic end facing and beveling machine supporting their 89*6.0 ERW mill line.  After about one month’s production and inspection, the automatic end facing and beveling mac...
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  • Common problems and treatment of steel pipe internal burr removal II

    Residual height of internal burr exceeded the standard In production, the contents of steel pipe are prone to remain bumps after burr removal in small diameter welded pipe, as shown in the following figure. This problem is often caused by inadequate scraping of burr knives or inadequate adjustmen...
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  • Common problems and treatment of steel pipe internal burr removal I

    Excessive output power Because of the limitation of small diameter HFW welded pipe diameter, the section area of magnetic rod will be limited by the internal cutter rod, resulting in low welding speed and excessive output power. Solution: 1 The magnetic rods with larger diameters should be chose...
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  • WRD’S DAILY EXPORT – THE ERW TUBE MILL LINE EXPORTED TO MIDDLE EAST

    Recently we has completed the production, quality inspection, commissioning of ERW 25 steel pipe mill line, and successfully exported on 30th, April 2019. ERW 25 high-frequency straight seam welded pipe production line is used to produce round electric welded steel tube Ø8~Ø25mm with wall thickn...
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  • Why the correct matching of high frequency welding machine is so important

    In the welding process of solid-state high frequency welding machine, the ability to transfer all welding machine power to the working coil is determined by the matching of the impedance (load) of the coil and the ratio of the maximum output voltage of the transformer to the maximum output curren...
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  • Optimal efficiency control of high frequency welded pipe welding process

    In high-frequency welding, the welding power is generally above 100 kW, of which 80% of the power is consumed in the heating of the coil, the impedance, and the heating of the pressure roller and the tube blank. Therefore, the key to minimizing power loss is to set up reasonable coils, resistors...
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  • Burr Removal Device in Small Diameter Welded Pipe

    In the production of high frequency welded pipe, the removal of inner burr is always a difficult problem to solve, especially for small diameter welded pipe. The larger and medium diameter welded pipe is prone to inner burr scraping deviation, excessive or small, and unclean scraping, which serio...
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  • Usual Maintenance of High Frequency Welded Pipe Mill Line

      Compared with seamless pipes, high frequency welded pipes are characterized by high continuity, high efficiency and low cost. At the same time, the production of raw material strip is developing rapidly, and the proportion of welded pipes in the whole pipe is increasing. The production of...
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  • Something for Squeeze roll form

    1 upper roll and 2 side rolls The three-roll squeezing method –”1 upper and 2 side” is equivalent to a short-circuit or current bypass device across the squeezing welds. The current short circuit or current bypass may have different upper roll diameters for different design and welded pipe...
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  • Two API Pipe Mills run successfully in Shuangjie

    Tianjin Shuangjie Steel Pipe Co., Ltd. has been established for more than 40 years. Their rich experience and first class quality products makes Shuangjie very famous among API steel pipe industry.    Shuangjie had appointed WRD to offer two API pipe mills on August, 2018. After six months p...
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  • WRD GALVANIZING LINE OVERALL ADAPTATION AND INSTALLATION

    Our galvanizing production line has entered the installation of main equipments. The WRD general engineer came to the scene personally, not only solved the problem of fitting parts of both sides for customers, but also formulated the cooperation plan of both parties, which made the installation p...
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  • Other Five Common Defects and Their Preventive Measures in High Frequency Welding

    High-frequency welded pipes may have various defects, and the defects are not completely uniform. In combination with the characteristics of our welded pipe production, there are several defects that often occur: 1 Inclusions; 2 Insufficient fusion; 3 Bonding; 4 Cast welding; 5 Air holes; 6 Skip ...
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  • Common Defects and preventive measures in High Frequency Welding — Inclusions

    High-frequency welded pipes may have various defects, and the defects are not completely uniform. In combination with the characteristics of our welded pipe production, there are several defects that often occur: 1 Inclusions; 2 Insufficient fusion; 3 Bonding; 4 Casting and welding; 5 Air holes; ...
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  • Material Selection and Maintenance of HF welded Pipe Rollers

    As the main tool in the production of welded pipe, the selection, use and maintenance of the roll material have an important impact on the life and economy of the roll. Once the roll is damaged and fragmented in use, it can only be scrapped, and some rolls are repaired by laser cladding welding,...
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  • WRD GALVANIZING LINE IS BEING INSTALLED IN SOUTH ASIA

    With the successful arrival of the last shipment, the boiler of our galvanizing line begin to be installed under the command of our technical and installation personnel. This production line can galvanize steel pipe with diameter from 2 inch to 6 inch, 5.8 to 6.4 meters long. The galvanizing lin...
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  • WRD GALVANIZING LINE IS ABOUT TO INSTALLED IN SOUTH ASIA

    With the last lot of Hot-dipped galvanizing line shipped successfully. Our Technical and installation personnel are about to set out and install the mill line. This production line can galvanize steel pipe with diameter from 2 inch to 6 inch, 5.8 to 6.4 meters long. The galvanizing line is desig...
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  • WRD’S DAILY EXPORT – THE HOT DIPPED GALVANIZING TUBE MILL LINE EXPORTED TO THE BELT AND ROAD COUNTRY

    In response to the call of “the Belt and Road”, we export productions and technology to these countries. Recently we have completed the production, quality inspection, commissioning of partial 2″-6″ steel pipe hot-dipped galvanizing line, and successfully exported on 16th, Novembre 20...
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  • China International Import Expo–WRD

    Nov. 5 – Nov. 10 is an extraordinary week for Shanghai, and for our WRD it’s also a very fruitful week. The China International Import Expo, sponsored by the Ministry of Commerce of the People’s Republic of China and the Shanghai Municipal People’s Government, aims to firm...
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  • China International Import Expo

    On November 5, 2018, in response to the call of chairman Xi Jinping, our WRD engineer team actively went to Shanghai National Exhibition Center to attend the first China International Import Expo. Our company WRD, mainly produces HF welded tube mill line, galvanizing tube mill line, SSAW tube mi...
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  • WRD’S DAILY EXPORT – THE STRAIGHTENING PIPE MACHINE EXPORTED TO THE BELT AND ROAD COUNTRY

    In response to the call of “the Belt and Road”, we export goods and technology to these countries. Recently we has completed the production, quality inspection, commissioning of straightening pipe machine, and successfully exported on 29th, October 2018. Straightening pipe machine is equipment f...
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  • WRD’s daily export – the hot dipped galvanizing line exported to the Belt and Road country

    To responding to the call of “the Belt and Road”, we export goods and technology to these countries. Recently we has completed the production, quality inspection, commissioning of 2”-6” steel pipe hot-dipped galvanizing line, and successfully exported on 22th, October 2018. Hot-dip galvanizing i...
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  • WRD ON TUBE CHINA 2018 IN SHANGHAI

    We WRD participated in Tube China 2018 – The 8th China International Tube Exhibition during 26th to 29th September, 2018. We have exhibited featured products — ERW mill line and flying saw on our booth. And it  attracted a large number of visitors from domestic and foreign related in...
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  • Welcome to visit WRD on Tube China 2018 in Shanghai

    After 16 years of accumulation, Tube China International Tube Exhibition has grown into Asia’s second largest tube industry event. In 2018, it will be hold on 26th to 29th Septemer in Shanghai. Booth No.: E1F43 As one of the biggest tube mill manufacturers in China. We, WRD is specialized...
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  • Value of agreement–provide new API tube mill solution to Shuangjie

    On August 4th, 2018, the WRD company signed an API steel tube mill agreement with Tianjin Shuangjie Steel Pipe Co., Ltd., located at the office of Shuangjie. Tianjin Shuangjie Steel pipe Co., Ltd. was established in 1978 and has 40 years of experience in welded pipe production, it has a high repu...
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