{"title":"Concrete Test Hammer","description":"\u003cp\u003e\u003ca href=\"https:\/\/store.smtoer.com\/collections\/all\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eConcrete Test Hammer\u003c\/strong\u003e\u003c\/a\u003e Equipped with high‑grade imported springs that undergo rigorous fatigue testing, ensuring consistent impact energy over tens of thousands of cycles. Compared to standard springs, the elastic modulus degradation is significantly slower, guaranteeing stable and repeatable rebound values (R‑values) even under prolonged heavy use. Fully compliant with ASTM C805 and JGJ\/T 23 standards.\u003c\/p\u003e\n\u003cp\u003eThe guide rod housing and spring seat snap ring are crafted from aviation‑grade aluminium alloy. This reduces the total weight by approximately 15% compared to traditional cast‑iron units, minimising wrist fatigue during extended handheld operation. The anodised surface also provides excellent corrosion and dust resistance, ideal for harsh job‑site environments.\u003c\/p\u003e\n\u003cp\u003eThe low‑friction pointer slider ensures smooth, accurate readings without sticking. The Concrete Test Hammer textured, non‑slip housing allows for secure one‑handed use, improving on‑site inspection efficiency.\u003c\/p\u003e\n\u003cp\u003eA portable and reliable tool for independent verification of contractor results, helping avoid quality disputes and ensuring compliance with project specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConcrete Test Hammer FAQ\u003c\/strong\u003e\u003cbr\u003eQ1: What standards does this \u003ca href=\"https:\/\/store.smtoer.com\/collections\/all\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eConcrete Test Hammer \u003c\/strong\u003e\u003c\/a\u003ecomply with?\u003cbr\u003eA: It is designed and tested in accordance with ASTM C805 (Standard Test Method for Rebound Number of Hardened Concrete) and JGJ\/T 23 (Chinese technical specification). It also meets the general requirements of EN 12504‑2 for European markets, ensuring global acceptance.\u003c\/p\u003e\n\u003cp\u003eQ2: How often should the spring be replaced or the instrument calibrated?\u003cbr\u003eA: Thanks to the imported high‑quality spring with superior fatigue resistance, the hammer maintains consistent impact energy for over 10,000 cycles without significant drift. We recommend a full calibration check every 6–12 months or after every 5,000 uses, depending on site conditions. A calibration test anvil is available as an accessory.\u003c\/p\u003e\n\u003cp\u003eQ3: What are the advantages of the aluminium alloy spring seat snap ring?\u003cbr\u003eA: The aviation‑grade aluminium alloy reduces overall weight by ~15% compared to cast‑iron models, making it easier for prolonged one‑handed operation. It also offers excellent corrosion resistance and is less prone to rust in humid or dusty environments, extending the tool’s service life.\u003c\/p\u003e\n\u003cp\u003eQ4:How do I maintain the hammer in harsh job‑site conditions?\u003cbr\u003eA: After each use, wipe the plunger guide rod with a clean, dry cloth to remove dust and debris. Do not use oil or grease on the sliding parts. The anodised aluminium housing is easy to clean and resists mild chemical exposure. Store the hammer in its protective case when not in use.\u003c\/p\u003e","products":[{"product_id":"smtoer-cth-80-concrete-test-hammer-precise-compressive-strength-evaluation-for-construction-materials","title":"SMTOER CTH-80 Concrete Test Hammer - Precise Compressive Strength Evaluation for Construction Materials","description":"\u003cp\u003eThe \u003cstrong\u003eCTH-80 Concrete Test Hammer\u003c\/strong\u003e is a versatile and reliable tool designed for evaluating the compressive strength of concrete and other construction materials. Key features include:\u003c\/p\u003e\n\u003cp\u003eComprehensive Test Range: The \u003ca href=\"https:\/\/store.smtoer.com\/collections\/concrete-test-hammer\" target=\"_blank\"\u003e\u003cstrong\u003eCTH-80 Concrete Test Hammer\u003c\/strong\u003e\u003c\/a\u003e can accurately measure concrete compressive strength ranging from 10 to 70 MPa, making it suitable for a wide variety of construction applications.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003ePrecise Impact Energy: Delivering an impact energy of 2.207J (0.225Kgf.m), the CTH-80 Concrete Test Hammer ensures consistent and reliable testing results.\u003cbr\u003eStandardized Spring Stretch: With a spring stretch length of 75 ± 0.3mm, the CTH-80 Concrete Test Hammer adheres to industry standards for accurate and reproducible measurements.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eControlled Friction: The CTH-80 features a slider friction of 0.50-0.8N and a static pointer slider friction of 0.65N ± 0.15N, ensuring smooth and consistent operation.\u003cbr\u003eSpherical Tip Design: The 25mm ± 1mm radius spherical tip of the CTH-80 is designed to provide accurate and uniform contact with the concrete surface, minimizing the impact of surface irregularities.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0811\/2134\/5832\/files\/2_17fb7bbe-f05a-4ac3-be92-f4eb4859e949.jpg?v=1787795385\" alt=\"\"\u003e\u003cbr\u003eCalibrated for Reliable Readings: The \u003ca href=\"https:\/\/store.smtoer.com\/collections\/concrete-test-hammer\"\u003e\u003cstrong\u003eCTH-80\u003c\/strong\u003e\u003c\/a\u003e is calibrated to display a value of 80 ± 2 on the test anvil, guaranteeing accurate and consistent compressive strength measurements.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWith its comprehensive test range, precise impact energy, and standardized design, the CTH-80 Concrete Test Hammer is the ideal solution for construction professionals seeking reliable and efficient evaluation of concrete compressive strength.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConcrete Test Hammer Application\u003c\/strong\u003e\u003cbr\u003eCast‑in‑Place Concrete Inspection\u003cbr\u003ePrecast Plant Quality Control\u003cbr\u003eRenovation \u0026amp; Infrastructure Projects\u003cbr\u003eA portable and reliable tool for independent verification of contractor results, helping avoid quality disputes and ensuring compliance with project specifications.\u003c\/p\u003e\n\u003c!----\u003e","brand":"SMTOER","offers":[{"title":"Default Title","offer_id":48934513574184,"sku":"CTH-80","price":80.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/2134\/5832\/files\/1_8e33fe1c-e9bf-4418-bd5d-20a579a91dd0.jpg?v=1721269579"},{"product_id":"high-precision-cth-90-concrete-test-hammer-intelligent-rebound-tester-with-imported-springs-cnc-machined-movement","title":"High-Precision CTH-90 Concrete Test Hammer – Intelligent Rebound Tester with Imported Springs, CNC-Machined Movement","description":"\u003cp\u003eSuperior Fatigue Resistance \u0026amp; Lightweight Build\u003cbr\u003eThe High-Precision CTH-90 Concrete Test Hammer is engineered with imported high-quality springs that offer exceptional fatigue resistance, paired with an aluminum alloy spring seat snap ring assembly. This combination ensures consistent impact energy over tens of thousands of tests while significantly reducing overall weight for prolonged field operation.\u003c\/p\u003e\n\u003cp\u003eEnhanced Pointer Precision \u0026amp; Stability\u003cbr\u003eFeaturing an upgraded pointer design, the \u003ca href=\"https:\/\/store.smtoer.com\/collections\/concrete-test-hammer\"\u003e\u003cstrong\u003eHigh-Precision CTH-90 Concrete Test Hammer\u003c\/strong\u003e\u003c\/a\u003e allows for easy friction adjustment and delivers more stable, drift-free readings. This ensures that every rebound value you record is highly reliable for critical strength estimations.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0811\/2134\/5832\/files\/93High-Precision_CTH-90_Concrete_Test_Hammer.jpg?v=1787798107\" alt=\"High-Precision CTH-90 Concrete Test Hammer\"\u003e\u003c\/p\u003e\n\u003cp\u003eUnmatched Durability for Harsh Job Sites\u003cbr\u003eBuilt with a super hard 6061 aluminum alloy casing and a button reinforced through a special stretching process, the SMTOER CTH-90 Concrete Test Hammer offers excellent abrasion and impact resistance. This rugged construction ensures the button remains firmly attached and the housing withstands tough construction environments without deformation.\u003c\/p\u003e\n\u003cp\u003eCNC-Machined Movement for Guaranteed Accuracy\u003cbr\u003eThe internal movement of the SMTOER CTH-90 Concrete Test Hammer is meticulously refined using advanced CNC machining centers and other precision machine tools. This guarantees highly consistent and repeatable rebound values, ensuring your on-site assessments meet the strictest quality standards.\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eHigh-Precision CTH-90 Concrete Test Hammer TECHNICAL PARAMETERS\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"1006\" height=\"250\" style=\"border-collapse: collapse; width: 503.02pt;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"473\" style=\"width: 236.50pt;\"\u003e \u003ccol width=\"533\" style=\"width: 266.75pt;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et2\" height=\"27\" width=\"473\" style=\"height: 13.90pt; width: 236.50pt;\"\u003eParameter\u003c\/td\u003e\n\u003ctd class=\"et3\" width=\"533\" style=\"width: 266.75pt;\"\u003eValue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003eStandard impact energy\u003c\/td\u003e\n\u003ctd class=\"et5\"\u003e2.207 J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003ePointer length\u003c\/td\u003e\n\u003ctd class=\"et5\"\u003e20.0 ± 0.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003eFriction of pointer\u003c\/td\u003e\n\u003ctd class=\"et5\"\u003e0.65±0.15 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003eSpherical radius of bouncing rod\u003c\/td\u003e\n\u003ctd class=\"et5\"\u003e25 ±1.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003eElastic tension spring stiffness\u003c\/td\u003e\n\u003ctd class=\"et5\"\u003e785.0 ±30.0 N\/m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003eOperating length of elastic tension spring\u003c\/td\u003e\n\u003ctd class=\"et5\"\u003e61.5 ±0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003eBounce hammer take-off position\u003c\/td\u003e\n\u003ctd class=\"et6\"\u003eScale “0~1”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\" style=\"height: 13.90pt;\"\u003e\n\u003ctd class=\"et4\" height=\"27\" style=\"height: 13.90pt;\"\u003eCalibration value on testing anvil\u003c\/td\u003e\n\u003ctd class=\"et5\"\u003e78-82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/store.smtoer.com\/collections\/concrete-test-hammer\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eSMTOER CTH-90 Concrete Test Hammer \u003c\/strong\u003e\u003c\/a\u003esuccessfully merges four critical advantages into one cost-effective package: imported spring longevity, pointer reading stability, 6061 aluminum abrasion resistance, and CNC-guaranteed precision. It directly addresses the common industry frustrations of data drift, fragile buttons, and heavy handling fatigue.\u003c\/p\u003e\n\u003cp\u003eBy choosing this model, your team gains a reliable, maintenance-friendly NDT tool that reduces rework risks and enhances daily inspection efficiency. \u003c\/p\u003e","brand":"SMTOER","offers":[{"title":"Default Title","offer_id":52285236412712,"sku":null,"price":90.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/2134\/5832\/files\/93High-Precision_CTH-90_Concrete_Test_Hammer.jpg?v=1787798107"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/2134\/5832\/collections\/1_4af58c71-7ea3-46af-96d4-76f32da9543d.jpg?v=1787796228","url":"https:\/\/store.smtoer.com\/ja\/collections\/concrete-test-hammer.oembed","provider":"Smtoer","version":"1.0","type":"link"}