Bollards and security gates play a crucial role in maintaining the safety and integrity of entry points. They help prevent unauthorized access and reduce property damage from accidental vehicle impacts. In today’s world, where security is a top priority, standardized crash ratings are essential for evaluating the effectiveness of these barriers. Understanding crash ratings can help you choose the right security gate or bollard for your needs. These ratings provide an objective measure of how well a barrier can withstand a vehicle collision. Whether you're securing a commercial site, a government facility, or a private property, knowing how to interpret these ratings is key to making an informed decision. Three main factors determine the crash rating of a barrier: Some rating systems only award certification if the vehicle does not travel more than a certain distance past the barrier. The combination of these three elements defines the barrier's crash rating. You may come across terms like K-ratings and M-ratings, so it's important to understand the difference between them. K-ratings, also known as Department of Defense (DOD) ratings, have been used since 1985. These ratings are based on how far a 15,000-pound vehicle travels past a barrier at a specific speed. To be certified, the vehicle must not travel more than 50 feet beyond the barrier. Higher K-ratings correspond to higher test speeds with the same vehicle type and weight. Common K-ratings include: K-ratings are further divided into L1, L2, and L3 classifications, depending on how far the front of the vehicle traveled beyond the barrier: The strongest K-rated barrier would be K12:L3, meaning a 15,000-pound vehicle traveling at 50 mph penetrated less than 3 feet. When reading K-ratings, the "K" number indicates the test speed, while the "L" number shows how far the vehicle traveled beyond the barrier. M-ratings have largely replaced K-ratings and are based on ASTM standards. Unlike K-ratings, which focus on the front of the vehicle, M-ratings consider how far the vehicle's payload travels beyond the barrier. These ratings are similar to K-ratings in that they use numbers to indicate test speeds. For example: M-ratings also use classifications P1, P2, P3, and P4 to describe the distance the vehicle traveled beyond the barrier: M-ratings offer more flexibility in measuring distances, making them more accurate in some cases. An equivalent of K12:L3 would be M50:P1, and an M50:P2 rated barrier could handle a 15,000-pound vehicle at 50 mph without allowing it to travel more than 23 feet. When looking for secure barriers, it's important to understand the differences between “tested,†“certified,†and “engineered.†Each term has a different level of reliability: Always look for certified M- or K-ratings when choosing a security barrier. If you see the labels “tested†or “engineered,†ask for proof that the product meets the stated standards. Without real testing, there's no guarantee the product will perform as expected in a real-world scenario. ASTM uses specific models and codes to classify anti-ram tests based on vehicle speed, weight, and penetration distance. Understanding these codes is essential for interpreting crash ratings accurately. Key speed ratings include: Penetration ratings vary by test speed: These codes help ensure that crash tests are consistent and reliable, providing clear guidelines for evaluating the performance of security barriers. At TYMETAL, we understand the importance of high-quality, certified security solutions. All of our security gates and crash barriers meet prestigious ASTM crash ratings, ensuring they adhere to universal, unbiased industry standards. Shop durable and reliable crash barriers and commercial gates from TYMETAL today. Our products are designed to protect your property and people, offering peace of mind with every installation. Reviewed By Chris Herold on 4/29/2021 How Does 5-axis CNC MILLING WORK?
CNC milling is complex machining technique which utilizes several types of pre-programmed CAM and CNC controls to build customized components or parts. We are professional custom CNC milling company and 5 Axis CNC Milling Service provider in China, we offer the manufacturing of precision machined parts and solutions at affordable rates to meet the growing demands of the clients across the world.
Cnc Milling,Cnc Milling Machine,Desktop Cnc Mill,Small Cnc Mill Ningbo Rongna Technology Co.,Ltd , https://www.service-machining.comGuide to Understanding Crash Ratings
The 3 Factors That Determine Crash Ratings
K-Ratings: Old Standards
M-Ratings: Modern Standards
Tested vs. Certified vs. Engineered
Different ASTM Models and Codes Used
Buy Certified Security Gates and Perimeters From TYMETAL
Milling is the process of cutting and drilling material using a rotating cylindrical tool. This tool is held in a spindle and comes in a variety of sizes and forms. With 5-axis machining, there have two extra rotary axes defined by A, which rotates around the X axis, B, which rotates around the Y axis, and C, which rotates around the Z axis. The combination of additional axes depends on the machine and comes in variations, including AB, AC, or BC.
With 5-axis machining, the table or cutting tool can be tilted, creating the ability to avoid collision with the tool holder and allowing for better access to part geometry. This also ensures improved tool life and cycle time as it helps maintain cutting position and constant chip load. This type of machining offers a push toward single-setup machining, creating shorter lead times and increasing efficiency.
Understanding Crash Ratings