What is the method of marking the bolts?[2021-05-25] Usually fastener bolts will use different marking methods to represent different meanings,...详情>>

What Should We Pay Attention To When ...[2021-09-22] The cleaning of rivets is a thing that many people will ignore. In fact, the cle...详情>>

What are the classifications of screw...[2021-05-25] There are several categories of bolts: (1), hexagonal bolts (HEXAGON HEAD BOLTS) 1. The re...详情>>

What are the commonly used materials ...[2021-05-07] Qingdao standard fastener products are widely used in our production and life, such as: co...详情>>

What are the main geometric parameter...[2021-05-07] How to specify the outer diameter of the thread, the diameter of the root, the pitch, the ...详情>>

A brief introduction to the thread of...[2021-04-22] The so-called bolt thread refers to a uniform helix convex shape on the outer surface or i...详情>>

What are the main geometric parameter...[2021-04-22] As for the thread of standard parts, the outer diameter, pitch, tooth type, length, etc. h...详情>>

What are the measurement units of fas...[2021-04-22] As the most basic measurement index for fastener standard products: measurement units, wha...详情>>

The purpose of the nut[2020-07-07] Bolts, screws, screws, etc. are often mentioned. What is the difference between them? In f...详情>>

Carriage bolts are an important part ...[2020-06-30] Qingdao Haorui Steel Products Co., Ltd. mainly produces and sells standard fasteners and n...详情>>