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Materials for High Strength Hexagon Bolts

There are three kinds of materials for high strength hexagon bolts, as follows: (1) carbon steel. Generally, hexagonal bolt manufacturers distinguish low carbon steel, medium carbon steel, high carbon steel and alloy steel according to carbon content in carbon steel. 1. Low carbon steel C% ≤ 0.25% is usually called A3 steel in China. It [...]

Hot-dip Galvanized Bolts

The technological process of hot-dip galvanized bolts is as follows: pickling, washing, adding auxiliary plating solution, drying, hanging plating, cooling, medicating, cleaning, grinding and hot galvanizing. Hot dip galvanized hexagon bolt is an effective metal anti-corrosion method, which is mainly used in metal structure facilities of various industries. After rust removal, the bolts are immersed [...]

By |November 6th, 2020|DoWeDo News|Comments Off on Hot-dip Galvanized Bolts

High Quality Hexagon Bolts

High quality hexagon bolts are mainly used to fix pipes, pipelines and other pipe diameter products. The internal radian of hexagon bolt is very important, and its radian is required to be natural and consistent with the radian of the installed pipe diameter, which is close to and wrap the pipe diameter to be fixed. [...]

By |November 2nd, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts, Socket Head Bolts, Structural Bolts|Comments Off on High Quality Hexagon Bolts

How to Avoid Stainless Steel Hexagon Bolt Rusting?

What are the causes of stainless steel hexagon bolt rusting? How to avoid it? 1. The surface of stainless steel hexagon bolt adheres organic juice (such as melon and vegetable, noodle soup, phlegm, etc.) and forms organic acid under the condition of water and oxygen. The corrosion of organic acid on metal surface will rust [...]

By |October 30th, 2020|A193, A307, A325, ASTM International Standard, Bolt Types, Hex Bolts, Stainless Steel Bolts|Comments Off on How to Avoid Stainless Steel Hexagon Bolt Rusting?

Removal of Worn Inner Hexagon Bolts

There are many parts of machinery and equipment that use inner hexagon bolts to fix parts. However, because they are often disassembled, the inner hexagon of the bolts is easy to grind round, and it is difficult to remove them with the hexagon wrench. This paper introduces two methods of hexagonal nut hexagon bolt parts, [...]

By |October 28th, 2020|A563, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, Socket Head Bolts|Comments Off on Removal of Worn Inner Hexagon Bolts

High Strength External Hexagon Combination Screw

Introduction to High strength external hexagon combination screw for buildings and workshops: High strength external hexagon combination bolt for steel structure is mainly used in railway and highway bridge, boiler steel structure, industrial workshop, high-rise civil building, tower and mast structure, hoisting machinery and steel structure where friction type high-strength bolt combination screw is required. [...]

High Strength Steel Structure Bolts Replace High Strength Bolts

What problems should be paid attention to when high strength steel structure bolts replace high strength bolts? 1) When the hole position is not correct, forced alignment will damage the thread of high strength bolt, resulting in the change of torque coefficient and pre tension. 2) It is possible that the internal stress in the [...]

By |October 8th, 2020|Bolt Types, High Strength Bolts, High Strength Structure Bolts, Stainless Steel Bolts, Structural Bolts|Comments Off on High Strength Steel Structure Bolts Replace High Strength Bolts

Advantage of High Strength Dacromet Bolt

The advantage of high strength Dacromet bolt is due to the development of Dacromet, which has become a necessary technical requirement in some workplaces. The main reasons are as follows: 1. Electroplating not only pollutes the air, land and water, but also does great harm to operators. The state has repeatedly declared that it is [...]

By |September 18th, 2020|A563, ASTM International Standard, Bolt Types, F568M, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, Structural Bolts|Comments Off on Advantage of High Strength Dacromet Bolt

Thread Processing Technology of High Strength Bolt

The thread of high strength bolt is realized by receiving hot working method. The thread material within the diameter range is processed through the process of thread rolling plate, and the screw thread of high strength bolts is formed by the pressure of screw plate. If the plastic flow line of the thread part is [...]

By |September 8th, 2020|A325, A490, ASTM International Standard, Bolt Types, High Strength Bolts, High Strength Structure Bolts|Comments Off on Thread Processing Technology of High Strength Bolt

Advantages of Hot-dip Galvanized Bolt

Hot-dip galvanized bolt has many advantages, which are summarized as follows: 1. The cost of hot-dip galvanized bolts treatment is low: the cost of hot-dip galvanizing antirust is lower than that of other coatings; 2. The hot-dip galvanized bolt is durable after hot-dip galvanizing: in the suburban environment, the standard hot-dip galvanized anti-corrosion thickness can [...]

By |August 29th, 2020|Bolt Types, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts|Comments Off on Advantages of Hot-dip Galvanized Bolt

Materials of High Strength Hexagon Bolts

Which materials of High strength hexagon bolts?  they are made of three kinds of materials. The details are as follows: Carbon steel: Generally, hexagonal bolt manufacturers distinguish low carbon steel, medium carbon steel, high carbon steel and alloy steel according to carbon content in carbon steel. 1. Low carbon steel C% ≤ 0.25% is usually [...]

By |August 27th, 2020|Bolt Types, Construction Bolts & Nuts, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts, Structural Bolts|Comments Off on Materials of High Strength Hexagon Bolts

Processing of Bolt Head and Thread

How is the bolt head and thread processed? The head of bolt is formed by cold upsetting plastic processing. Compared with the cutting process, the metal fiber (metal wire) is continuous along the product shape without cutting off in the middle. Therefore, the strength of the product is improved, especially the mechanical properties are excellent. [...]

By |August 25th, 2020|Anchor Bolts, Bolt Types, Bracket Bolt, Carriage Bolts, Countersunk Bolt, DIN International Standard, Expansion Bolt, Lag Screw Bolts, Plow Bolts, Ring Bolts|Comments Off on Processing of Bolt Head and Thread

How to Distinguish High Strength National Standard Bolt

The identification method of high strength national standard bolt mainly depends on five aspects: Look at the mark. Generally, the packing box of bolts has identification. It can be divided into 8.8, 10.9 and 12.9 grades. In general, there is no grade mark on the hexagonal plane of hexagon bolt, which is a common grade, [...]

By |August 23rd, 2020|Bolt Types, Carriage Bolts, Construction Bolts & Nuts, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts, Structural Bolts|Comments Off on How to Distinguish High Strength National Standard Bolt

Heat Treatment of American Hexagon Socket Bolts

There are 10 kinds of heat treatment methods for American hexagon socket bolts 1. Normalizing: the steel or steel parts are heated to the appropriate temperature above the critical point AC3 or ACM for a certain time and then cooled in air to obtain pearlite structure. 2. Annealing: the hypoeutectoid steel workpiece is heated to [...]

By |August 20th, 2020|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, Socket Head Bolts|Comments Off on Heat Treatment of American Hexagon Socket Bolts

Requirements for Heat Treatment High Strength Fasteners

Heat treatment high strength fasteners should be quenched and tempered according to the technical requirements. The purpose of heat treatment quenching and tempering is to improve the comprehensive mechanical properties of fasteners, so as to meet the tensile strength value and yield ratio specified by the product. Heat treatment process has a crucial impact on [...]

By |August 17th, 2020|A490, A563, ASTM International Standard, Bolt Types, Fastener, Heavy Hex Bolts, High Strength Structure Bolts|Comments Off on Requirements for Heat Treatment High Strength Fasteners

Advantages of High Strength Galvanized Bolts

High strength galvanized bolts are galvanized, so what are the advantages? Hot dip galvanizing is also used for the surface anti-corrosion of screws, bolts and nuts. The hot-dip galvanized screws have better corrosion resistance than the galvanized screws, but the cost is higher. The structural bolts with high strength are not suitable for hot-dip galvanizing. [...]

By |August 15th, 2020|Bolt Types, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Advantages of High Strength Galvanized Bolts

A325M Heavy Duty Hexagon Bolt Specification

Heavy duty hexagon bolt: 1. Standard: A325M 2. Grade: 4.8 / 5.8 / 6.8 / 8.8 / 10.9 / 12.9 ,  grade 2 / 5 / 8 3. Specification: m6-m24, 1 / 4 inch-1 inch 4. Length: 10mm-270mm,  1 / 2 inch-10 inches 5. Surface treatment: natural color, blackening, galvanizing, hot galvanizing, Dacromet 6. Packing: [...]

By |August 13th, 2020|A325, ASTM International Standard, Bolt Types, Bolts & Nuts Grade, Fastener, Grade 8.8, Heavy Hex Bolts|Comments Off on A325M Heavy Duty Hexagon Bolt Specification

Process of High Strength Blackening Bolt

As for the process of high strength blackening bolt, it is a blackening treatment process at room temperature, which can be divided into the following procedures. The first step is to clean the surface of high strength bolts. After that, the degreasing process is started. The high strength bolt must be completely immersed in the [...]

By |August 11th, 2020|A490, ASTM International Standard, Bolt Types, Construction Bolts & Nuts, Heavy Hex Bolts, Hexagon Bolt, High Strength Structure Bolts|Comments Off on Process of High Strength Blackening Bolt

Application of Countersunk Hexagon Bolt

The countersunk hexagon bolt is often used in machinery, which has the advantages of easy fastening, disassembly and not easy to slide angle. The hexagon wrench is generally a 90 ° bend, one end of the bend is long and the other side is short. When the short side is used to bolt, holding the [...]

By |August 9th, 2020|Bolt Types, Construction Bolts & Nuts, DIN International Standard, Hex Bolts, Hexagon Bolt|Comments Off on Application of Countersunk Hexagon Bolt

Classification of Hot Dip Galvanized Hexagon Bolts

Hot dip galvanized hexagon bolts are divided into ordinary and reamed ones. According to the head shape: there are hexagonal head, round head, square head, sink head and so on. The hexagon is the most commonly used. The countersunk head of hot-dip galvanized bolt is generally used in the place where connection is required. The [...]

By |August 7th, 2020|Bolt Types, Hex Bolts, Hexagon Bolt|Comments Off on Classification of Hot Dip Galvanized Hexagon Bolts