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  • WRD’s Daily Export – 219 Milling Saw Exported To South Asia

    Recently WRD has completed the production, quality inspection, commissioning of 219 milling saw, and successfully exported on 27th, April 2020. The milling saw is used to cut the running steel pipe into fixed length. It is characterized by good cutting quality, no burr, high working efficiency an...
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  • How to choose the RIGHT tube mill supplier

    When choosing tube mill suppliers for a project, it’s worth taking the time to make sure you’ve made the right decision before there’s no turning back. So, how do you recognize when a supplier is the correct partner? Here are some of the most important factors in choosing the best suppliers for ...
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  • WRD’s Daily Export – End Facing And Beveling Machine To Southeast Asia

    WRD had designed and produced end facing and chamfering machine forΦ89-219 steel pipes for Southeast Asian customer, It is now ready for delivery. End Facing And Chamferming Machine Steel pipe chamfering machine is used for chamfering and flattening the welding groove at both ends of steel pip...
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  • South African government representatives come to WRD for technical assistance

    The first two days of Chinese Spring Festival, WRD welcomed the last distinguished friends! Two South African government representatives contacted WRD as soon as they got a Chinese visa. The day after receiving the customer, we set out for HULUDAO STEEL PIPE in Liaoning Province. HULUDAO CITY STE...
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  • Indian engineers come to WRD to look for cold rolling mill solutions

    Two senior engineers from India came to discuss the cold rolling mills and technology with us, we together visited the mills manufactured by us many years ago in Tangshan Lianchuang Steel Co., Ltd. And at present, the lines is still in good operation. Engineers from both sides exchange technology...
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  • South American Customer Seeking Reformation of API Mill Line

    In 3rd January, WRD welcomes its first customers of 2020. The customer is one of the biggest API steel pipe manufacturer in South America. But their API mill line has been used for about 15 years, with low production efficiency and high energy consumption. With the rapid development of infrastruc...
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  • New API Pipe Mill went into service in Baolai

    Tianjin Baolai Steel Industry Group Co., LTD is a comprehensive company, which focus on welded steel pipes and other steel products. It manufactures API, ASTM, BS, DIN and JIS standards pipes with galvanizing facility. The annual capacity is approximately 1,200,000MT in various specifications an...
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  • Oversea Customer Visiting WRD Galvanizing Mill Line Project

    On 16th, December 2019, we took customers to visit WRD galvanizing production line in Hebei Province. WRD already successfully designed and supplied over 50 welded tube mill lines and over 30 galvanizing lines with high technique and good after sales service to this factory. The zinc coating of ...
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  • 219mm*9.0mm Mill Saw Ready For Delivery

    Recently, WRD is inspecting and testing run the 219mm*9.0mm Mill Saw before delivery. The mill saw shall be considered qualified if fluent production of 4 hours for each specification has been achieved. The pipe product shall meet relevant standards of ASTM standard.   Working principle and char...
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  • WRD participated in the second China International Import Expo

    From November 5 to 10, the second China International Import Expo will be held in Shanghai. More than 3000 enterprises from more than 150 countries and regions participated in the exhibition. Compared with the first China Import Expo, the scale of the Expo is larger. The number of the world&#...
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  • Korean customers come to WRD to discuss ERW mill line technical solutions

    Korean customers came to our company to communicate with us about the technical solutions of ERW tube mill lines in 5th November. Our senior engineer accompanied the customers to visit the equipment processing workshop and assembly workshop   According to customers request,WRD’s senior...
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  • Brand New ERW Tube Mill Lines for top 10 pipe manufacturer

    RD is pleased to announce the signing of a new contract with Zhengda,  for the supply of 5 brand-new ERW tube mill lines for pipe from 21.3-219.1 with 1.0-8.0mm thickness.   This brand-new ERW tube mill line with quick change technology, it has ability to quickly b...
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  • WRD on 11th Asia Galvanizing Conference in Thailand

    WRD participated in the 11th Asia Pacific General Galvanizing Conference during July 23-26th, 2019 in Bangkok, Thailand. Under the title of “Znchronize Asia for the future”, the event is going to present world class technology along with all other aspects regarding gener...
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  • 11th Asia Pacific General Galvanizing Conference In Thailand

    On July 24-25th, 2019, the 11th Asia Pacific General Galvanizing Conference will be hold in Bangkok, Thailand. The event is going to present world class technology along with all other aspects regarding general hot-dip galvanizing. With more than 60 complete lines designed, manufactured, install...
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  • WRD Pipes Galvanizing Line successfully put into operation

    WRD after-sales team has been on-site installation and commissioning for several times, and the final pipes GI lines has been successfully delivered to customers for use. Looking back on the whole process of installation and commission...
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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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