News

17/05/2021
RAYCHIN

Raychin Limited was established

RAYCHIN LIMITED responds to market demand and accelerates its global market layout.
29/03/2021
Hastelloy C-276 Fastener

How to maintain the screw

Screws used widely in machinery and equipment, for the performance of the mechanical equipment use also have close relations, suddenly get damaged in use process, if the screw and can cause severe damage to the equipment, lead to can't normal operation, so we in the process of using screw, best for both maintenance and maintenance, so as to the use of more secure.
28/03/2021
flange bolts

Combination screw screw action

Combination screw, many purchasing personnel may not know what is called combination screw, is how the screw.The following is a brief introduction to what is called composite screws.Simply put, there are two combinations and three combinations of combined screws.The head has the round head, namely the pan head and the outer hexagonal head.Combination screw refers to the pan head screw or outer hexagon bolt with elastic flat pad screw composed of three components.
The role of the combined screw is also very simple, is to fasten the product objects.Because it is a spring pad to rub the teeth on the screw, there is no need to match the spring pad when using.And in use, the combined screw has a particularly large role, is the loosening effect.
27/03/2021
Self-tapping screws

What is the conventional self-tapping screw production process?

First, screw production pr […]
26/03/2021
stainless steel screws

Is the passivation of stainless steel screws important?

In the production process […]
25/03/2021
Jam Nutfine thread nut

How to use the thin nut

When thin nut is used, it is not used alone, but with another standard nut, which can play a role in preventing loose.When two thick and thin nuts cooperate, there are certain operating specifications.We can also see from the above table that the thin nut should be placed in the front, that is, the thin nut should be screwed in first, and then the standard nut should be screwed in the back. Only when the position is placed correctly, the anti-loosening effect will be better.But in many cases, the installation operation process will not pay attention to this matter, often put the wrong position, so many enterprises in the procurement, direct use of two the same standard nut to install, although this will increase the procurement cost, but also effectively prevent the wrong installation situation.
24/03/2021

How to know the screw size accurately

If the varieties and specifications of screws purchased are not many, it is most convenient for you to bring the sample or mail it to the manufacturer, so that the manufacturer can confirm for you.Do the screw to see you in kind is generally a standard part of the screw, they will see clearly.I will confirm with you the specific screw specifications.
If there is no specific product style, ask the factory's technology to provide you with the purchase list of screws.Specific standard specification model and purchase quantity.If the product specification variety can, make a list.Then give it to the supplier.
23/03/2021
self drilling screw

Installation method and function of hexagonal head self – tapping screws

What is the method of installing hexagonal head tapping screws?Where can I use hexagon head screws?Let's take a look at the installation method and function of hexagonal self-tapping screw.I hope it's helpful to you.
Method for installation of hexagonal head self - tapping screws
1. According to the shape of the groove of the hexagonal self-tapping screw, use a manual screwdriver to select the appropriate screwdriver.Align the opening of the screwdriver to the shape of the screw groove.You need to connect and tighten the screws.Squeeze the screw directly and turn the screwdriver clockwise.Gradually rotate the hexagonal tapping screw into the workpiece until the entire thread is immersed in the workpiece.
22/03/2021
U Bolts

U bolt specifications and maintenance items

M18 U bolts are nuts with M18.Most U-bolts are made of round steel with a diameter of 16.M20 U bolt is a nut with M20, mainly with 18 round steel processing;And M22 U bolts are made of M22 nuts and 20 round rods.These specifications are commonly used, the dimensions are generally: 600mm high, 200mm internal space, total length: 1400mm;The height is 400mm, the interior space is 200mm, and the total length is 1000mm.Of course, the size of U bolt can be processed according to customer requirements, customized processing.