Share this document. RTJ flanges have deep, high tolerance grooves cut into their faces. With the chart as a guide, select the proper flange bolt size, quantity, diameter, and length for the equipment being assembled.
Share on LinkedIn, opens a new window. What's the Difference between a Male and a Female Thread Type? Hex flange bolts feature an integrated washer head and are commonly used on motor frames. Tensile load is calculated by multiplying the tensile strength with the area of the load material. A quick reference guide for flange assembly, stud sizes, stud lengths, wrench sizes and recommended torque patterns and torques. 2. is not shown in this preview. Then, measure the string from the beginning to the end with a ruler and divide the measurement by 3. Is this content inappropriate? Male threads are inserted into the female threads. The number of bolts refers to the actual number of bolts required according to the NPS.
On the other hand, Ring Type Joint flanges are used in high pressure and/or high-temperature services above 800°F, as commonly seen in Petroleum and Petrochemical industries. Twelve-point flange bolts, also known as ferry bolts, are the alternative for hex socket cap screws. 1 Posted on July 28, 2022. 47 Series A Standards. Click to expand document information. This means that you have to round up your pipe measurement to get the NPS required. Push the wrench again and the recommended torque patterns will be shown with sequence. There is a very specific procedure that is used when torquing the bolts.
From the industrial fastening standards, you'll be able to determine if a suggested torque value belongs to dry or lubricated thread. Flange bolts are different, and every company has its own bolting standards regarding lubrication, bolt reuse recommendations, and torque tightening procedures. Reading a flange bolt size chart is fairly straightforward. API Flange Bolt Wrenches, Hammer Wrenches for Wellheads and BOPs, Size Chart, S. Copyright. Buy the Full Version. Count the Number of Bolts Required. This one-stop bolt size and length chart helps you with just that. Female threads are situated on the inside, like a nut. Grade G flange lock nuts are used primarily with hex flange bolts to ensure proper tightening. You're Reading a Free Preview. Search inside document. Update 17 Posted on March 24, 2022. 0% found this document not useful, Mark this document as not useful. Made for Pipefitters by Pipefitters.
They are subjected to a predefined torque which is designed to stretch the bolt out a little bit. Report this Document. Reward Your Curiosity. Once you've determined the diameter of the flange bolt, you're ready to jump to the next column: bolt length. An ideal flange bolt should be long enough to guarantee the thread is in complete contact with the nut. Insert all four bolts and tighten all the nuts by hand until snug.
Over-torquing can damage the flange so make sure to stop once the recommended torque is reached. Save API Flange Bolt Wrenches, Hammer Wrenches for Well... For Later. 5 group, which are limited to flanged fittings made from forged or cast materials. If your pipe's thread is male, wrap a string around the pipe and mark the point of contact. A proper flange connection is not complete without a suitable bolt. The NPS is usually engraved into the pipe itself. In this article, I'll show you how to properly read a flange bolt size chart, as well as identify what size flange bolt you already have. Before selecting a suitable bolt, it's crucial to consider the manufacturer's recommendations, the industry, and its use case.
Here's how to read a flange bolt size chart: Select the Right NPS. Before choosing a flange bolt that matches your needs, you'll need to consider the following. High tensile loads are dangerous because they can lead to fasteners' deformity. You are on page 1. of 2. See this helpful video: Piping basic – NPS, DN, Pipe Schedule. No charts or sheets to go through just put the flange size, flange rating and flange type you are looking to assemble hit the wrench Icon an your stud sizes, stud lengths, wrench sizes and recommended torques will appear.
Of Bolts||Bolt Diameter||Bolt Length||Wrench Size||Recommended Torque (Ft. /Lbs. The size guide below lists accurate sizing information about the selected flange's diameter and length, as well as the required wrench size and torque patterns. When it comes to finding quality fasteners, partnering with a company with experts who understand the most critical information is a must. Let's say you need to bolt a flange to a pipe. This is achieved when two or more flange bolt threads extend past the nut after being tightened.
Share with Email, opens mail client. They are commonly used in aircraft to hold the outer casing firmly and in automotive since installation with a 12 point socket is easy. Ideally, two full threads should be visible on the nut's topside for a tight grip. A stud is threaded either on both ends or the full length of the stud. When utilizing a graded flange bolt, it is critical to use a nut that is either the same as or one grade higher than the bolt. Centrally Managed security, updates, and maintenance.
Just like with any bolt size chart, the wrench and torque size determines the amount of force you can use to tighten the bolt. Big Bolt manufactures quality bolts and nuts, with a quick turnaround time to ensure efficiency in your project. The bolt circle and flange come with their own unique measurements, ranging from 2-1/4 to 29-1/2, and 3-3/8-inch to 32-inch respectively. Contact our experts if you have questions about the best options for your application. Bolt length is divided into two segments: Raised Face Flange (RF) and Ring Type Joint Flange (RTJ). Update 16 Posted on December 28, 2021.