Author - cylpro

What are the advantages of fasteners after hot-dip galvanizing?

We may often hear hot-dip galvanized fasteners such as screws, nuts, bolts, etc. Hot-dip galvanizing is a process technology used to treat the metal surface, mainly to improve the corrosion resistance of the metal surface. Therefore, in order to improve Fastener performance, many manufacturers will be its hot-dip galvanizing process.
1, good reliability: galvanized steel and steel is a combination of metallurgy, as part of the steel surface, the durability of the coating is more reliable;
2, comprehensive protection: Each part […]


How to test stainless steel products

1. The requirement of appearance quality
The inspection of the appearance of stainless steel screws is from the appearance, electroplating and so on.
Two, the inspection of the thickness of the screw of the screw
1, measuring method: used with vernier caliper, micrometer, gauge etc..
2. Magnetic method: the magnetic method is used to measure the thickness of the coating layer. It is a nondestructive measurement of the non magnetic coating on the magnetic substrate by the magnetic thickness gauge.
3, microscopic method: microscopic […]


The difference between high strength bolts and normal bolts

Different names, natural performance is different, usually high-strength bolts can bear the same load than ordinary bolts larger.
Common bolt material is Q235 (ie A3) manufactured.
High-strength bolt material 45 # steel, alloy steel (such as 20MnTiB, 35VB) or other high-quality materials, made after the heat treatment, increased strength.
The difference between the two is the difference in material strength.
The first point: from raw materials to analyze:
High-strength bolts made of high-strength materials. High-strength bolts, nuts and washers are made of high strength […]


Three main materials used for fasteners

Standard parts on the market mainly carbon steel, stainless steel, copper three kinds of materials.
(A) Carbon Steel Carbon steel carbon steel content to distinguish between low carbon steel, carbon steel and high carbon steel and alloy steel.
1, low carbon steel C% ≤ 0.25% Domestic commonly known as A3 steel. Abroad, basically called 1008,1015,1018,1022 and so on. Mainly used for 4.8 bolts and 4 nuts, small screws and other products without hardness requirements. (Note: Drill tail nail is mainly made […]


T&Y Hardware Fasteners Show in Las Vegas in Oct-2017

We are ending in 18-19 th Oct fasteners show in Las Vegas ,USA,Really Great success , We believe our American market will bigger and bigger . Now sharing you some pic for show .

Our Boss Jane ,together with Andy ,USA sales representative And Processing Boss Mr Yan in our Booth together with our customers
Also Sharing your other info from Las vegas show ,hope you enjoying


The Method of Calculating Tensile Strength of Hexagon Socket Head Bolts

Strength is the bearing capacity per unit area, is an indicator.
Formula: Bearing capacity = strength x area;
Threaded bolt, M24 bolt cross-sectional area is not the diameter of the circular area of 24, but 353 mm2, called the effective area.

Normal Bolt Grade C (grades 4.6 and 4.8) The tensile strength is 170 N / mm 2.
Then the carrying capacity is: 170×353 = 60010N. Conversion, 1 ton equivalent to 1000KG, equivalent to 10000N, then M24 bolts that can withstand about 6 […]


Austrian clients visit to discuss silo bolts order

Last week,  Austrian clients visited and we discussed the new project,they want to buy soil bolts with red plastic cover ,the material is    Class8.8,surface treatment is HDG,size is M12*30.I have added the drawings, you can see the drawings which send by our clients.
This is a regular product for us and we are good at doing this,We are very happy to talk about this cooperation reached an intention,Customers promise to give us an order after returning home.
This is the start […]

Special head bolts ,SS socket head bolts

How to test bolt??

How to test bolt??
Bolts :mechanical parts, cylindrical threaded fasteners with nuts.A fastener consisting of two parts of the head and the screw (the cylinder with the external screw) shall be fitted with the nut to tighten the connection of two parts with a pass hole.This form of connection is called bolted connection.If you screw the nut from the bolt, you can separate the two parts, so the bolt connection is a removable connection.Bolt detection can be divided into two […]


Invitation National Industrial Fastener & Mill Supply Expo from T&Y Hardware

Dear Valued customer
We hereby sincerely invite you and your company representatives to visit our booth at  2017 
National Industrial Fastener & Mill Supply Expo  from Oct  18th – 19th ,2017
It would be a great pleasure to meet you at the exhibition.We expect to establish long-term business relations with your company in future.
 Exhibition Center :Convention Center & Sands Expo Las vegas
 T&Y Hardware Booth Number :1377
  Date :Oct  18th – 19th ,2017
Our Sales Manger Jane will attend this fair ,her contact info as below 
 Jane :  Email ; […]

bolts and nuts

The main characteristics of hot dip galvanized bolts and nuts

Common varieties Hot dip galvanized fasteners,Today ,The technique engineer Andrew from shanghai T&Y hardware( sharing some experience : electric galvanized, powder infiltration of zinc, galvanized machinery and hot dip galvanized four. HDG fasteners mainly on commodity production production process for process technique appearance, then it itself what features it?
1 reliability: between zinc coating and steel metallurgy contact, it becomes part of the appearance of the steel, and therefore the durability of the coating is more reliable;

All maintenance: each part […]


Bolt inspection methods

Bolts: mechanical parts, with cylindrical nuts with threaded fasteners. A type of fastener consisting of a head and a screw (cylindrical body with external threads) is to be fitted with a nut for fastening the connection of two parts with through-holes. This type of connection is called bolting. Such as the nut from the bolt on the spin down, and can make the two parts apart, so the bolt connection is a removable connection. Bolt inspection can be divided […]

bolts test

Bolts common hardness index

Bolt hardness indicates the ability of a material to resist the intrusion of a hard object into its surface. It is one of the important performance indicators of metal materials. The higher the general hardness, the better wear resistance. Commonly used hardness index Brinell hardness, Rockwell hardness and Vickers hardness.

Brinell hardness (HB) to a certain load (usually 3000kg) to a certain size (diameter is generally 10mm) hardened steel ball pressed into the surface of the material, to maintain a […]