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  • Procuroment rules for hexagon nut

    Procuroment rules for hexagon nut

    NUTS 1 Chemical composition test Within a specified time,incoming nuts materials of grade 35CrMo shall be retest, and results must be in accordiance with TABLE 1.   TABLE 1-1 Chemical composition of nuts(mass fraction)) /% Grade C Si Mn Cr Mo P S 35CrMo 0.32~0.40 0.17~0.37 0....
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  • Condense the heart & gather strength, work hard for 100 days

    Condense the heart & gather strength, work hard for 100 days

    At 7:00 on July 2nd, Anyang Longteng’s “Condense the heart & gather strength, work hard for 100 days” mobilization meeting was held in front of the office building of the company.More than 200 employees and management personnel from each workshop attended the meeting. Genera...
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  • Fasteners for ship building

    Fasteners for ship building

    Shipbuilding fasteners are always high strength with big diameter, some of which need to be milled and threaded. Anyang Longteng Heat Treatment Material Co.,Ltd is a professional thread rod factory, providing OEM services for shipbuilding fasteners that can be inspected by Bereau Veritas, DNV, Lo...
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  • Congratulations! Our Lab certified by CNAS in 2021

    Congratulations! Our Lab certified by CNAS in 2021

    On June 17, 2021, Anyang Longteng Heat Treatment Materials Co., Ltd.  laboratory successfully pass the CNAS accreditation review. The China National Accreditation Service for Conformity Assessment granted the company’s laboratory CNAS accreditation and issued a certificate.  CNAS is the English a...
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  • Deputy secretary of Anyang Municipal Party Committee, visited the company to investigate and guide the work

    Deputy secretary of Anyang Municipal Party Committee, visited the company to investigate and guide the work

    On June 9, 2021, Li Yibo, deputy secretary of Anyang Municipal Party Committee, visited our 114 hot continuous rolling seamless steel pipe production line project for investigation, accompanied by Lei Ming, secretary of Yindu District Party Committee, Mei Mei, member of the Standing Committee of ...
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  • High-strength bolt connection form

    High-strength bolt connection form

    (1) High-strength bolts are usually divided into friction connection, tension connection and pressure connection according to the connection form. Among them, friction connection is the basic connection form widely used at present. (2) The treatment methods of the friction surface of the high-st...
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  • Joint vaccination to build the Great Wall of Epidemic Prevention

    Joint vaccination to build the Great Wall of Epidemic Prevention

    All kinds of seeds should be planted, vaccinated voluntarily, and vaccinated free of charge. On May 8th, Anyang Longteng employees began to vaccinate the new crown vaccine in time, by stages, and in batches. In order to let employees know and voluntarily participate in the vaccination, on the one...
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  • Anyang Longteng launches a comprehensive emergency plan drill for production safety accidents

    Anyang Longteng launches a comprehensive emergency plan drill for production safety accidents

    In order to strengthen safety production management and further improve the ability of employees to respond quickly to emergencies and emergency response, Anyang Longteng Heat Treatment Materials Co., Ltd. carried out a comprehensive emergency plan drill for production safety accidents at 9:00 on...
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  • Penetrant Testing for Bolt Products

    Penetrant Testing for Bolt Products

    Dye penetrant inspection (DP), also called Penetrant Testing(PT), is a widely applied and low cost inspection method used to check surface-breaking defects in ferrous materials including our bolt products.  For ferrous components magnetic-particle inspection is often used instead for its subsurfa...
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  • PACKAGING – WIND TOWER ANCHOR BOLT

    PACKAGING – WIND TOWER ANCHOR BOLT

    Packaging method is always one of the most important part of purchasing, especially for the wind turbine foundation cage anchor bolt. After finish main production part, we need to make full pole packaged, in order to enlarge the products life span and maintain their good property and performance....
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  • Meet us at Fastener Expo Shanghai 2021 !

    Meet us at Fastener Expo Shanghai 2021 !

                               
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  • Firing ceremony of our new seamless pipe factory

    Firing ceremony of our new seamless pipe factory

    On the morning of April 30, the firing ceremony of the 300,000-ton-a-year seamless steel pipe continuous rolling production line project of Yulong Pipe Industry was successfully held. Yindu District Party Secretary Lei Ming, District Mayor Wang Lei, leaders of the Shuye Town Government, the Manag...
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  • Let the flag of “Workers Pioneer” fly high

    Let the flag of “Workers Pioneer” fly high

    On the morning of April 20th, 2021, International Labor Day’s celebrating and the 70th Anniversary of the Founding of the Municipal Federation of Trade Unions was held at the Municipal Workers’ Cultural and Sports Center. Anyang Longteng Heat Treatment Material Company’s high-st...
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  • New Product – Stud Bolt for Wind Turbine Blade Root

    New Product – Stud Bolt for Wind Turbine Blade Root

                        Anyang Longteng Heat Treatment Material Co.,Ltd is now developing new products towards the market. With long term connection in Wind energy industry, we have fruitful experience to produce high strength anchor bolt cage assemb...
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  • China OEM high strength stud bolt manufacturer – Anyang Longteng Heat Treatment Material Co.,Ltd

    China OEM high strength stud bolt manufacturer – Anyang Longteng Heat Treatment Material Co.,Ltd

    The process of customizing a product: 1. According to customer’s drawings or samples 2. Professional engineers discuss according to drawing process 3. Sales team send quotation 4. After payment, purchase raw materials, produce samples, test samples, send to customer 5. After customer testin...
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  • Dextra Group VIsit Anyang Longteng Heat Treatment Material Co.,Ltd

    Dextra Group VIsit Anyang Longteng Heat Treatment Material Co.,Ltd

    Dextra Group was established in Thailand by French entrepreneurs, dealing mechanical splices, high performance bars and rock bolt systerms. Dextra group is now very interested in Anyang Longteng’s Heat treatment line and wind power products, and is planing for a long-term cooperation with ...
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  • Yulong Group held a management experience sharing and exchange meeting

    Yulong Group held a management experience sharing and exchange meeting

      At 14:00 on March 10, 2021, Mr.Feng Huaizhi, vice president of production of Henan Yulong Group, Tengsheng Technology Co., Ltd., and his party went to Anyang Longteng Heat Treatment Materials Co., Ltd. for production management exchanges. Anyang Longteng participated in the exchange meeti...
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  • Closing to an end – Construction for Continuous Rolling Production line for φ114 Seamless Pipe

    Closing to an end – Construction for Continuous Rolling Production line for φ114 Seamless Pipe

    The land of northern Henan in March is full of fresh green and vibrant. Yulong Group’s Anyang Longteng Φ114 hot-rolled seamless steel pipe production line project has entered a decisive battle, and the front-line employees are rolling up their sleeves and working hard. At the project constr...
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  • What kinds of anchor bolts are used as wind turbine fastener

    What kinds of anchor bolts are used as wind turbine fastener

    Grade 8.8, 9.8, 10.9, 12.9  are high strength anchor bolts for wind power. Grade 10.9 and 8.8 are the most common grades.  At present, there are roughly 3 types of fasteners used in domestic wind turbines and foundations: Tower bolts. High strength bolts used on the wind turbine tower a...
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  • High strength bolt series for wind farms available

    High strength bolt series for wind farms available

    Wind energy is now the world’s most popular and upcoming source of renewable energy source, and is one of the fastest-growing renewable energy technologies. Production of wind electricity doubled between 2009 and 2013, and in 2016, wind energy accounted for 16% of the electricity generated ...
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  • Material Requirements for high strength bolt and accessories

    Material Requirements for high strength bolt and accessories

    Commen materials for high strength bolt, studs, nut and washer are listed in below form. But Anyang Longteng are able to conduct production for other materials, please send the drawings and technical documents to our team.  Heat Treatment procedures for high strength bolt, stud, nut and washer sh...
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  • Choosing the best threading method

    Choosing the best threading method

    Cut thread VS Rolled thread Is it necessary to specify the machining method?  Are the differences in the end product significant enough that a designer should give additional consideration to this question? In some instances, yes. Following are some main considerations to help determine if rollin...
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  • Coarse thread VS fine thread

    Coarse thread VS fine thread

                                      Coarse thread What’s coarse thread? The so-called rough teeth are actually refers to the standard thread, in the absence of special instructions, we generally buy stainles...
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  • Anchor Bolt Model Display

    Anchor Bolt Model Display

    ANYANG LONGTENG HEAT TREATMENT MATERIAL CO.,LTD   WIND TURBINE FOUNDATION ANCHOR BOLT CAGE ASSEMBLIES   PRODUCT MODEL   1. In order to give clients a better understanding of foundation anchor cage, we make a anchor cage model in our factory. Positive responses were received after c...
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