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  • SELF DRILLING HOLLOW GROUTING BOLT

    SELF DRILLING HOLLOW GROUTING BOLT

    Self-Drilling Anchors The self-drilling Hollow bar anchor system is comprised of a hollow threaded bar with an attached drill bit that can perform drilling, anchoring and grouting in a single operation. The hollow bar allows air and water to freely pass through the bar during drilling to remove d...
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  • Partial Standard for high strength fasteners

    Partial Standard for high strength fasteners

    70.1-2008 GB/T six angle cylinder head screws GB/T 70.2-2008 in the six corners of flat head screws 70.3-2008 GB/T six angle head screws GB/T 825-1988 screw ring 889.1-2000 GB/T type 1 non metallic insert six angle lock nut 889.2-2000 GB/T 1 non metallic insert six angle locking nut fine teeth 89...
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  • Wind Turbine Foundation feet, Anchor Bolt ‘s Surface Quality Acceptance

      The surface quality of steel round bar shall conform to GB/T3077-2015 “ALLOY STRUCTURE STEEL”-6.10.1 The surface of steel materials used for pressure processing    The surface of steel materials used for pressure processing shall be free of crack, scar, folding or sundry matters. In...
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  • Customer Award us “Green Supplier”“Honest Supplier”

    Customer Award us “Green Supplier”“Honest Supplier”

    In the year 2018, we supply around 900 foundations for wind turbines. One of our customer invited us to attend their annual meeting, and awarded us the  “GREEN SUPPLIER” and “HONEST SUPPLIER”. The first left one is our general manager Mr. FengBo.       In our pl...
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  • PSB400 PSB500 PSB785 PSB830 PSB930 PSB1080 Steel Rebars

    PSB400 PSB500 PSB785 PSB830 PSB930 PSB1080 Steel Rebars

                    P – Prestressing S – Screw-thread B – Bars Screw-thread steel bars for the prestressing of concrete (also known as the finishing rolling rebar or reinforcing rebar) is reinforced straight steel rebar of large diameter with...
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  • How to simulate real tension condition at sight – Anchor Bolt Test During Production

    How to simulate real tension condition at sight – Anchor Bolt Test During Production

    Anyang Longteng Heat Treatment Co.,Ltd are professional high duty steel anchor bolt manufacture and exporter. We got the advanced technology to produce anchor bolt, high strength fastener, rock bolt, hold down bolt, threaded rods, anchor cages, etc. Below is the main process to produce the anchor...
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  • Private-Owned Companies Now Earn Government Support – Anyang Longteng Heat Treatment Material Co.,Ltd

    Private-Owned Companies Now Earn Government Support – Anyang Longteng Heat Treatment Material Co.,Ltd

    Recently, Chinese central government has continuously held many meetings discussing about the development difficulties and economic pressures, especially for those private enterprises. Many new polices to help private enterprises are soon coming out, some of which are even unprecedented. To help ...
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  • Full Threaded Rock Bolt, Mining Tunnel Application, anchor bolt, FULLY RIBBED BAR

    Full Threaded Rock Bolt, Mining Tunnel Application, anchor bolt, FULLY RIBBED BAR

    Rock bolts are widely used for rock reinforcement in mining and tunneling. Our heat-treated rebars have big advantage on yield strength, tensile strength and pre-stress, which could help to support underground tunnels, roof support. Steel grade:  20MnSi Dia Yield strength MPa Tensile streng...
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  • Chemical Composition of Steel rebars for Resin Rock Bolt

    Chemical Composition of Steel rebars for Resin Rock Bolt

    1. Chemical composition of resin rock bolt rebar shall conform to Table 1. Table 1 Chemical Composition  Element 20MnSi 30MnSi Percentage, % Tolerance Percentage, % Tolerance + - + - C 0.17-0.23 0.02 0.02 0.27-0.34 0.02 0.02 Si 0.40-0.70 0.03 0.03 0.60-0.90 0.03 0.03 Mn 1.30-...
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  • Winter Solstice Day in Anyang Longteng Heat Treatment Material Co.,Ltd

    Winter Solstice Day in Anyang Longteng Heat Treatment Material Co.,Ltd

    On December 22th, it’s the WINTER SOLSTICE in Chinese lunar calendar. There is a saying that if you eat dumplings at the winter solstice day, it won’t freeze your ears off.  It has been a tradition for our company to have a warm dumpling day with every employees. So from the early mor...
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  • Quality Control System for Resin Rock Bolt

    Quality Control System for Resin Rock Bolt

    1. Definition of Procedure Test: is a Quality test on specific procedures of resin rock bolt production except the procedures after packaging steps.   2. Quality tester should perform first inspection on below procedures. Production will continue only with first inspection pass. 2.1 Heat-treatmen...
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  • AISI 4140 QT/SR TGP Alloy Round Bar Manufacturer – Anyang Longteng Heat Treatment Material Co.,Ltd

    AISI 4140 QT/SR TGP Alloy Round Bar Manufacturer – Anyang Longteng Heat Treatment Material Co.,Ltd

    This medium carbon alloy grade is widely used for many general purpose parts requiring high tensile strength and toughness. 4140 contains chromium and molybdenum as alloying elements and may be heat treated over a wide range to give the combined hardness may be required, this steel is readily fla...
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  • How do we inspect Rock Bolt Raw Material ?

    How do we inspect Rock Bolt Raw Material ?

    We’re Anyang Longteng Heat Treatment Material Co.,Ltd, a professional high duty rock bolt manufacturer. Here, we present our raw materials rules. Sharing this is because raw materials are one of the most importance part that catch client’s attention. Besides production process, raw ma...
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  • LT Production Key Process for Rock bolt manufacturing

    LT Production Key Process for Rock bolt manufacturing

    Anyang Longteng Heat Treatment Material Co.,Ltd is a professional manufacture and trading combo for yielding bolt, anchor bolt, rock bolt support system, ductile rock bolt for rock burst applications.   We would like to share the most common production procedure. Please well noted that this is ju...
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  • LT Employees Take Examination Regularly

    LT Employees Take Examination Regularly

    Anyang Longteng Heat Treatment Material Co.,Ltd always pays its attention on its employees’ working ability. Since human resources are always the core reason for a enterprise developing . We know that only we can keep the employees high skilled and trained, our factory could be creative, an...
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  • UK Customer Visited Anyang Longteng in December

    UK Customer Visited Anyang Longteng in December

    On 5th, Dec. 2018, UK customer, Mr. Christ visited us for mine rock bolt. Our General Manager Mr. Feng Bo, Vice General Manager Mr. Fu Guangqing, exporting managers Mr. Leo Sun, Ms. Cora Tsao, technicians Mr. Fu Zhixin attended this meeting. Both parties make presentations, asked questions, put f...
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  • QT Quanlity testers in Longteng

    QT Quanlity testers in Longteng

    Longteng’s seamless production line has a special group – a group of QC Ladies. Working environment is tough and difficult. Steel pipes are around 40-50 degree on the inspection stand, but these ladies have to do test and stoop down hundreds of times every day. With their dedication, ...
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  • Marking and Packaging Details for anchor bolt products

    Marking and Packaging Details for anchor bolt products

      Anchor bolts must be marked according to regulations, including:   a) manufacturer identifiable mark b) steel grade   Figure  Marking on anchor bolts   Packaging a)Packaging boxes shall be secure and moisture-proof and mixed storage of different batches of products are not permitted.handling re...
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  • Anchor Bolt grouting procedures

    Anchor Bolt grouting procedures

    This guide addresses proper procedures for the anchoring of embedments (bolts,threaded rod, rebar) into concrete. Typically, a structural engineer evaluates several factors before proceeding with an anchor bolt grout project. Anchor strength and long term performance are dependent on a variety of...
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  • Swedish Customer Visited Anyang Longteng Heat Treatment Material Co.,Ltd

    Swedish Customer Visited Anyang Longteng Heat Treatment Material Co.,Ltd

    Yesterday, Swedish Customer visited my beautiful factory LT. Our products quality has been proven to be highly acceptable in European market.  Mr. Olsen use to be the director  of Asia-Pacific in SSAB. After retirement, he began to participate in many projects. As we all know, wind power electric...
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  • Pre-stressed Grout Rock Bolt Advantages – Anyang Longteng Heat Treatment Material Co.,Ltd

    Pre-stressed Grout Rock Bolt Advantages – Anyang Longteng Heat Treatment Material Co.,Ltd

    Anyang Heat Treatment Material Co.,Ltd manufacture prestressed threaded bar-Rock anchor bolts. Threaded bar bolt is composed of screw thread steel bar, high strength washer plate, casting damping nut, yield tube and other accessories. According to the structure, bolt has two types: rib rebar bolt...
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  • What is ROCK BOLT?

    What is ROCK BOLT?

    A Rock Bolt is a long anchor bolt, for stabilizing rock excavations, which may be used in tunnels ro rock cuts. It transfer load from the unstable exterior to the confined interior of the rock mass.                As shown in the figure, rock bolts are almost a...
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  • Onshore Wind Turbine Foundation Foot Steel Grade and equivalents

    Onshore Wind Turbine Foundation Foot Steel Grade and equivalents

      Commodity Steel Grades and Standards Class property Wind Tower Foundation Anchor bolt(Cold Rolled Thread) 42CrMoA GB/T 1231-2006 35CrMoA GB/T3098.1-2000 ISO 4014 ASTM A615/A615M Grade55,60,70,75 ASTM A722/A722M ASTM A193/A193M Grade B7 Grade 8.8 Grade 10.9 Grade 12.9 Hardware...
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  • How much wind was in Europe’s electricity?

    How much wind was in Europe’s electricity?

    Europe is a global leader in wind energy. According to the date from the WIND EUROPE,  wind energy was almost 20% of Europe’s electricity on Sunday. 67% in Portugal, and more than 20% in Spain,Ireland, Germany, Lithuania, Sweden,Estonia. Last year wind energy covered 11.6% of EU power deman...
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