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  • Anyang Longteng Group compeleted internal audit of ISO 9001 systerm

    Anyang Longteng Group compeleted internal audit of ISO 9001 systerm

    In order to implement Longteng group’s management policies and goals, continuously improve the company’s management system, continuously improve the management level, and ensure the adequacy, suitability and effectiveness of the company’s quality, environment, occupational healt...
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  • Grade 8 J429 hex head bolt,  UNC bolt

    Grade 8 J429 hex head bolt, UNC bolt

    Gr 8, SAE J429 Mechanical and Material Requirements for Externally Threaded Fasteners   Grade 8, hex head bolt, grade 8 bolt, fasteners, machine bolt, A manufacturing Grade 8 screws and bolts by hot forging or machining from bar.   Designation: Grades are designated by numbers where increasing n...
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  • Hex bolts

    Hex bolts

    Hex bolts have hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex head bolt, hex cap screws, heavy hex bolts, structural bolts. Six sided heads bolts are the industry standard for fasteners with forged heads. Hex bolts are the most common type of bolt in...
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  • M20-M100 stud bolt, hex bolt manufacturer-Anyang Longteng Heat Treatment Material Co.,Ltd

    M20-M100 stud bolt, hex bolt manufacturer-Anyang Longteng Heat Treatment Material Co.,Ltd

        1200 employee factory for QT round bar, stud bolt, hex bolt, anchor bolt system – Anyang Longteng Heat Treatment Material Co.,Ltd. Bolt conform to ISO898-1 CL 8.8, 10.9, 12.9 or technical agreement. CNAS lab, BV, CE, EN1090, EN15048, EN14399, ISO9001, ISO41001, ISO45001, UT, ...
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  • Win two contracts within one day- A boom ordering season in spring of 2022

    Win two contracts within one day- A boom ordering season in spring of 2022

    Anyang Longteng Heat Treatment Material Co., Ltd.   Win two contracts within one day – A boom ordering season in spring of 2022     The plan of the year lies in the spring, and the development of the whole year depends on the first season. Recently, there have been frequent reports o...
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  • Training employees to consolidate the awareness of safe production

    Training employees to consolidate the awareness of safe production

    In order to continuously strengthen enterprise safety management and improve employees’ awareness of self-protection, Anyang Longteng has taken multiple measures to effectively promote safety education and training. Mobilize deployment and consolidate ideas. The company attaches great impor...
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  • Wind turbine generator running during cold weather

    Wind turbine generator running during cold weather

    From March 16th to 17th, the temperature in the central and eastern regions dropped by 4 to 10 degrees Celsius, and in some areas, the temperature dropped by more than 12 degrees Celsius, accompanied by winds of magnitude 4 to 5 and gusts of magnitude 6 to 8. There have been two rain and snow eve...
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  • Threaded bolts for heat changers , grade 8.8, 10.9, 12.9

    Threaded bolts for heat changers , grade 8.8, 10.9, 12.9

    Anyang Longteng Heat Treatment Material Co.,Ltd is a threaded bolt factory based in China, supplying high-strength bolt for heat exchangers. Threaded bolts allow for installation of a flanged connection in a plate and frame heat exchangers. Diameter: 3/4″-3″, M18-M80 Property class: 8...
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  • China supplier for DIN 6914  High-Strength Hexagon Bolts With Large Widths Across Flats For Structural Bolting

    China supplier for DIN 6914 High-Strength Hexagon Bolts With Large Widths Across Flats For Structural Bolting

                          Material:Steel, Strength class 10.9 by DIN ISO 898-1 Thread Size M12 M16 M20 M22 M24 M27 M30 M36 d                 P Pitch 1.75 2 2.5 2.5 3 3 3.5 4 ds Nominal Size 12 16 20 22 24 27 30 36 max 12.7 16.7 2...
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  • How do we call each dimension on hexagon head bolt?

    How do we call each dimension on hexagon head bolt?

                          Legend: b – length of the thread (at least) l – length of bolt d – the nominal diameter of the thread k – head height r – radius e – the diameter of the circumscribed circle (not less...
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  • Ready stock ISO 4014 12.9 M64, M56, M42, M48, M36

    Ready stock ISO 4014 12.9 M64, M56, M42, M48, M36

    Product:hexagon head screws / half thread Specification:M20-M72 Property Class: ISO898-1  8.8, 10.9 Elongation after fracture Minimum tensile strength Lower yield strength or stress ar 0.2% non-proportional elongation Stress under proof load Strength under wedge loading Hardness Impact streng...
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  • Yulong Group awards 2021 advanced collectives and individuals

    Yulong Group awards 2021 advanced collectives and individuals

      According to the selection method of advanced collectives and advanced individuals of the group company, after the recommendation and selection of various units, Yulong Group recently commended the advanced collectives and advanced individuals for 2021.   There are “excellent employees...
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  • Ready stock ISO 4017 hex head bolt with high strength, Class 8.8 10.9 12.9

    Ready stock ISO 4017 hex head bolt with high strength, Class 8.8 10.9 12.9

    DIN EN ISO 4017 – 2001 Hexagon head screws — Product grades A and B DIN EN ISO 4017-2001 is a hes head bolt standard for dimensions, more details to check below information.  Half thread hex bolt standard is DIN EN ISO 4014. Bolts’ properties need to follow ISO 898-1. Anyang Longteng...
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  • DIN 933 vs ISO 4017

    DIN 933 vs ISO 4017

              DIN 933 Geman standard, ISO 4017 international standard, EN ISO 4014 European standard.  Differences are dimensions for s, e are a little different, ISO 4017 is smaller than DIN 933. Rest parts are same. Main differences are in M10, M12, M14, M22 Mechanical pro...
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  • Hex head bolt DIN933

    Hex head bolt DIN933

    Hex head bolt can be divided as full thread hex bolt DIN933 and half-thread hex bolt DIN931. DIN933 hexagon bolt is similar to ISO4017 and GB/T 5783.     DIN933 is a bolt standarding for fully threaded hex bolt with thread diameter M1.6 ~M52, product grade: Grade A, Grade B.  Grade A,...
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  • Poverty alleviation received a pennant and praised

    Poverty alleviation received a pennant and praised

    On December 31, 2021, Feng Bo, General Manager of Anyang Longteng Heat Treatment Material Co.,Ltd and a party of 6 representatives visited Dongjiaokou Village, Duli Town, Yindu District, and brought them the care and warmth of the support unit. The secretary of Dongjiaokou Village and the main re...
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  • GB/T 5782 black oxide hex 8.8 grade bolt specification

    GB/T 5782 black oxide hex 8.8 grade bolt specification

    Product:hexagon head screws / half thread Specification:M20-M72 Property Class: ISO898-1  8.8, 10.9 Elongation after fracture Minimum tensile strength Lower yield strength or stress ar 0.2% non-proportional elongation Stress under proof load Strength under wedge loading Hardness Impact strength...
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  • Screw Thread Tolerances, According to ISO 965

    Screw Thread Tolerances, According to ISO 965

    Anyang Longteng thread tolerance standard, according to ISO 965, or GB/T 197-2003   This standard tolerance apply to all our thread steel bars, for example, wind turbine foundation anchor bolt, roof support bolt,high duty stud bolt, steel tie rod. More information for threaded bars, or if n...
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  • Anchor Bolt Thread Rolling Process

    Anchor Bolt Thread Rolling Process

    wind turbine foundation cage, anchor bolt Thread rolling operation process: Rolling thread into requested length according to drawings, and measure the length by regular rules piece by piece. Make sure 100% qualified. thread production standard according to GB/T 196-2003 General Purpose Metric ...
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  • EN 14399 bolt for wind turbines HR HV system

    EN 14399 bolt for wind turbines HR HV system

    EN14399 Product:High-strength structural bolting assemblies for preloading This standard on structural bolting reflects the situation in Europe where two technical solutions exist to achieve the necessary ductility of bolt/nut/washer assemblies. These solutions utilize different systems(HR and H...
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  • ISO 4032 hex nut grade8 10 CE

    ISO 4032 hex nut grade8 10 CE

    Product:hexagon nuts Mechanical properties according to ISO898-2  8  10 Thread tolerance:6g,6e,6h Dimension tolerance:ISO 4759-1 Surface quality:ISO 6157-2 Quality management systems: ISO9001   We provide ISO 4014/4017 bolt
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  • EN15048 hex head bolt CE certificate

    EN15048 hex head bolt CE certificate

    EN 15048-1 PRODUCTS:Non-preloaded structural bolting assemblies Bolts grade: 8.8  10.9 Nuts grade: 8  10 Washer hardness class: HV100, HV200, HV300 Thread size: M20-M72 Mechanical Properties meet ISO898-1, CL 8.8 10.9  Elongation after fracture   Minimum tensile strength Lower yield strength or...
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  • ISO 4014 hexagon head screws, supplier from China

    ISO 4014 hexagon head screws, supplier from China

    Product:hexagon head screws / half thread Specification:M20-M72 Property Class: ISO898-1  8.8, 10.9 Elongation after fracture Minimum tensile strength Lower yield strength or stress ar 0.2% non-proportional elongation Stress under proof load Strength under wedge loading Hardness Impact strength...
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  • The key technology of anti-impact prestressed support for coal mine roadway won the 2020 National Science and Technology Award

    The key technology of anti-impact prestressed support for coal mine roadway won the 2020 National Science and Technology Award

    On November 3, the Party Central Committee and the State Council solemnly held the 2020 National Science and Technology Awards Conference in the Great Hall of the People in Beijing. The project completed by Anyang Longteng Heat Treatment Material Co., Ltd. won the National Technical Invention Awa...
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