NEWS

  • 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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  • Head officers of Indu District Government Visit Our Φ114 Pipe Project

    Head officers of Indu District Government Visit Our Φ114 Pipe Project

      On 28th Jan, 2021, Vice Secratary of Indu District Mr. Wang Lei, Secratary of Shuiye Country Mr. Hao Haitao, Visited Anyang Longteng’s Φ114 hot rolled seamless pipe project site.  Mr. Feng Dibao, Chairman of Yulong Group, Mr. Feng Bo, General manager of Anyang Longteng warmly welcome...
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  • In first month of 2021, We have an auspicious start on both production and sales!

    In first month of 2021, We have an auspicious start on both production and sales!

    For January 2021, Anyang Longteng Heat Treatment Material Co.,Ltd produced 11,161 ton seamless pipes, completing 117.49% of January goal, and this number also supass the history record; Our sales team won contracts for 144 wind turbine foundations, completing 120% of January goal. It is really an...
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  • Hot heading VS Cold heading fasteners

    Hot heading VS Cold heading fasteners

     Is the head of bolt formed by puching?  Yes, most of the heads of bolts are punched, because this is the most commercial way. Factories can use hot forging or cold forgine to form the heads.   But sometimes for small quantities, some specified head bolts are shaped by turning machine/ lathe.  &n...
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  • Raw Materials QC Test After Stock in

    Raw Materials QC Test After Stock in

    After stock in, take samples in propotion. Test items are chemical composition, macrostructure,non-mettalic inclusion,crystal degree,decarburized layer,tensile test,impulse test, ultrasonic test etc. Materials that psss all above test items can be used.   chemical compositions by spark Spectromet...
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  • Regular Tests For Anchor Bolt Foundation of Wind Turbine Generator System

    Regular Tests For Anchor Bolt Foundation of Wind Turbine Generator System

                        Anyang Longteng Heat Treatment Material Co.,Ltd is a professional manufacturer for anchor bolt assembly, which meet technical specifications of GOLDWIND, GE, ENVISION, SANY, TIANRUN, MINGYANG, SHANGHAI ELECTRIC. According to A...
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  • Receipt of a Client Appreciation Letter

    Receipt of a Client Appreciation Letter

    State Power Investment Corporation Limited (SPIC) send a Appreciation Letter to Anyang Longteng Heat Treatment Material Co.,Ltd on 31th, December 2020, showing sincerely thankful to Anyang Longteng Group for their cooperation in Pingyao Wind Farm Project. In March 2020, a serious period of padami...
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  • Steel materials for High strength Fasteners

    Steel materials for High strength Fasteners

    Steel is the most common material for fasteners. For high strength fasteners, it is always important to select steel materials.  Below chat is the most common materials for high strength fasteners as a guide.   Commodity Property Grade Material Standard fitable specifications Bolt...
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  • Post tension bar products up to 70 diameter

    Post tension bar products up to 70 diameter

                        Anyang Longteng Heat Treatment Material CO.,Ltd is a professional heat-treating rod factory based in China, providing high strength QT treated bars and bolts. One of the most competitive materials is post-tensioning bar system.  P...
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  • ALLOY STEEL, THREADED FULL LENGTH, ASTM A193 B7 STUDS BOLT OEM CHINA SUPPLIER

    ALLOY STEEL, THREADED FULL LENGTH, ASTM A193 B7 STUDS BOLT OEM CHINA SUPPLIER

      Anyang Longteng Heat Treatment Material Co., Ltd is a leading manufacturer and supplier of heat-treated stud bolts, providing 8.8, 9.8, 10.9, 12.9 property class stud bolts. Threaded full length B7 stud bolts are available here. ASTM A193 B7 studs are alloy steel bolting materials and fast...
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  • polish bright round bar, polished stainless steel round bar for exporting, not stainless

    polish bright round bar, polished stainless steel round bar for exporting, not stainless

    The purpose of the peeling and polishing process is to remove decarburized layer and surface rolling defect on anchor bars,and to guarantee the steel bars’ out-of- roundness not more than 0.05mm A、peeling: to ensure remove decarburized layer(Total layer’s depth is 0mm) and surface rolling...
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  • NDT INSPECTION ON HIGH STRENGTH STEEL BOLT

    NDT INSPECTION ON HIGH STRENGTH STEEL BOLT

    Magnetic particle inspection, also called MPI , or MT is a non-destructive test(NDT) process for detecting surface and shallow subsurface discontinuities in our heat treatment steel round bar materials. In order to improve our produce quantity, our wind turbine foundation system anchor bolt, roo...
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  • Factory overlook of a 500 employees QT bolt factory

    YULONG GROUP(1500 employees) owns several manufacturing subsidiaries: 1. Anyang Longteng Heat Treatment Material Co.,Ltd (producing CE heat-treated bolt) located at Qianhuangfu Village, Yindu District, Anyang, Henan, P.R.C 2. Anyang Longteng Heat Treatment Material Co.,Ltd 2nd new plant(seamless...
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  • Similar and differences between ASTM A193/A193M  Gr B7 and B7M

    Similar and differences between ASTM A193/A193M Gr B7 and B7M

    Both B7 and B7M are from standard specpfication for alloy-steel and stainless steel bolting for high temperaturer or high pressure service and other special purpose applications. Both B7 and B7M have the same chemical composition, all equal to Chineses GB grade 42CrMoA Mechanical properties for ...
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  • Common heat treatment concept

    Common heat treatment concept

    What is Heat-treatment in steel industries? Heat-treatment is the process of heating and colling metals, using specific predetermined methods to obtain desired properties. Common heat-treatment methods: Normalizing: Heating steel or steel parts to an appropriate temperature above the critical poi...
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  • 42CrMo VS 42CrMoA differences

    42CrMo VS 42CrMoA differences

    Both 42CrMo and 42CrMoA are Chinese GB standard high strength alloy steels, 42CrMoA is the main material for threaded bar and bolt Anyang Longteng Heat Treatment Material Co.,Ltd. Please noted, Anyang Longteng’s 42CrMoA is special ordered with our own technical requirements, short for ̶...
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  • New Hex bolt production line facilities are now arriving, CE certified, standard EN14399  EN15048

    New Hex bolt production line facilities are now arriving, CE certified, standard EN14399 EN15048

        Anyang Longteng Heat Treatment Material Co.,Ltd is a professional high strength bolt manufacturer based in China, providing heat-treated high strength Post tension threaded rod, wind turbine foundation cage, ground anchor bolt, rock bolt, tie rod, seamless pipes.  This year, the bo...
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  • Post Tension pre-stressing Bolt system for Bridge structures

    Post Tension pre-stressing Bolt system for Bridge structures

      Diameters: M64 M56 M48 M42 M39 M36, customers’ technical requirements Length: 1~11.8 meters Property Class: 8.8  9.8 10.9 12.9 Accessories: Nut, plain washer, dome/spherical nut, dome/spherical washer, coupler Thread: cut thread, rolled thread Thread length: Acc. to customers’ techn...
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  • 생산 공정-풍력 터빈 기초 케이지 시스템 용 앵커 플레이트

    생산 공정-풍력 터빈 기초 케이지 시스템 용 앵커 플레이트

    Wind turbine anchor plate for foundation has 2 parts: upper and lower anchor plate (embeded and template ring), which are connected by splice plates and high strength anchor bolts.  Splice plate is a kind of rectangle plate which has the same mechanical properties of anchor plate, usually wind tu...
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  • LT 인장 구조 – 인장로드, 프리스트 레스트 부품 및 대형 스팬 철골 구조 건물에 널리 적용됩니다.

    LT 인장 구조 – 인장로드, 프리스트 레스트 부품 및 대형 스팬 철골 구조 건물에 널리 적용됩니다.

    Anyang Longteng Heat Treatment Material Co., Ltd. (formerly Anyang Longteng Special Steel Manufacturing Co., Ltd.) was established on January 19, 2005, with a registered capital of 147.89 million yuan, covering an area of more than 300 acres, a building area of 100,000 square meters, and employee...
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  • 좋은 소식, 안양 Longteng CE 인증서 획득!

    좋은 소식, 안양 Longteng CE 인증서 획득!

    Our products have been tested and on-site audited by CE certification body – Lloyd’s Register. All of our indicators and systems are in compliance with relevant required standards, hence, we obtained the CE certification issed by Lloyd’s Register and sales pass to enter the Euro...
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  • 앵커 볼트 케이지의 설치 과정

    앵커 볼트 케이지의 설치 과정

      According to supply list, check the numbers and dimensions of each components. Check whether the anchor plates are deformed, whether the anchor bolts are damaged. Unqualified products should be removed.   Lift lower template to a flat area and install lower template with splice plates.  ...
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