​How to ensure the size of the scaffolding couplers?

For all the building accessories, the size of the product is a very important thing, scaffold coupler is also so. A scaffold coupler is an important fastener used to connect and fix the scaffold pipe when building the scaffold. As an important part of the scaffold, the quality of the scaffold coupler largely determines the safety of the scaffold. Therefore, the determination of its size should also be careful and accurate. This paper will discuss the related problems about the size of the scaffold coupler.

The article can be divided into the following three parts：

What is the general standard for the size of scaffolding couplers？

What are the differences in the size of different types of scaffolding couplers?

Provisions and matters for the production of scaffolding couplers.

What is the general standard for the size of scaffolding couplers？

For the inspection of the shape and size of building fasteners, the national standard GB/15831-t1999 "dimensional tolerance and machining allowance of building fasteners" divides the dimensional tolerance of blank building fasteners into 16 grades, expressed as ct1-ct16, and gives the tolerance grades of various casting alloy blank castings produced by different production methods and different casting processes. Among them, the standard is the dimension tolerance grade of bulk and mass-produced blank building fasteners. The term "basic dimension of building fastener" in the standard refers to the dimension of machined blank building fastener, including necessary machining allowance; "dimensional tolerance" refers to the change of allowable dimension, which is equal to the absolute value of the algebraic difference between the maximum mechanical dimension and the minimum limit dimension, and also equal to the algebraic absolute value of upper deviation and lower deviation.

What are the differences in the size of different types of scaffolding couplers?

1. Rectangular coupler. In buildings, rectangular couplers are standard for adding transformers. Depending on your specifications, these types of connectors can come in various sizes, including 48x48, 43x43x48, 48x60, and so on.

2. Rotate the connector. They are handy for creating custom angles, which means they can connect two pipes at any Angle. Their main application is to place diagonal or cross braces between vertically aligned pipes.

3. Pratt coupler. These types of couplers are generally considered scaffolding suitable for light movement because they cannot support so much weight.

4. Sleeve coupling. These are primarily designed to connect two scaffold pipes externally at both ends. However, the steel separator has a central position to ensure that each tube is inserted evenly into the other tube.

Provisions and matters for the production of scaffolding couplers

1. Nonferrous metal fasteners are generally allowed to be 2-5mm higher than the fastener surface, and ferrous metal fasteners are generally allowed to be 5-15mm higher than the fastener surface.

2. Cracks, through holes, penetrating cold insulation, penetrating shrinkage and slag inclusion are not allowed on the scaffolding fasteners.

3. The burr and drape joint on the non machined surface of scaffolding couplers shall be cleaned to be as flat as the fastener’s surface.

4. Any defects not exceeding the machining allowance are allowed on the machined surface, but the crack defects shall be removed.

5. The surface of the casting used as the processing datum and measurement datum must be flat.

6. The deformed scaffolding fasteners are allowed to be shaped, and then the cracks are inspected one by one.

Welcome to Golden Resource to purchase a scaffold coupler. Golden Resource has our own design team who are with years of designing and manufacturing scaffolding products. If there is no product you need in our catalog, we can also customize it for you.