Anti Rust Treatment Method of Dacromet Hexagon Bolt

Anti rust treatment method of Dacromet hexagon bolt: 1. Rust removal: The derusting process in Dacromet bolt treatment is different from the general pre-treatment method of coating, and acid pickling is used for derusting. This is because most of the parts treated by Dacromet are high-strength bolts, nuts and high-strength stamping parts, which will produce [...]

By |April 17th, 2021|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Head Screws, Hexagon Bolt, Lag Screw Bolts, Screws, Structural Bolts|Comments Off on Anti Rust Treatment Method of Dacromet Hexagon Bolt

Hardness Grade of Hexagon Socket Bolts

What are the hardness grade of hexagon socket bolts? The cylindrical head of the hexagon socket bolt is in the shape of hexagon socket. There are many kinds of hardness grades. Users can choose according to their different needs to ensure the tightening effect of the bolt. The hardness grade of hexagon socket bolt will [...]

By |April 9th, 2021|A325, A490, ASTM International Standard, Bolt Types, Hex Bolts, Hexagon Bolt, High Strength Bolts, Socket Head Bolts|Comments Off on Hardness Grade of Hexagon Socket Bolts

The Difference Between Hexagon Bolt and Screw

The difference between hexagon bolt and screw Hexagon bolts and screws are commonly used fasteners, which are very common in our life. Their main function is to connect and fix them. However, many people can't tell the difference between them, or even confuse them. Today we will explain the differences between them. Differences between hexagon [...]

Anti Corrosion Treatment Method of Hexagon Socket Bolts Surface

Anti corrosion treatment method of hexagon socket bolts surface In the production of hexagon socket bolts, one of the most important links is to carry out anti-corrosion treatment on the surface. You may ask "how to carry out anti-corrosion treatment?" in fact, different corrosion conditions lead to different anti-corrosion treatment methods. Today, we will briefly [...]

By |March 19th, 2021|A490, A563, ASTM International Standard, Bolt Types, F3125, High Strength Bolts, High Tensile Bolts, Plow Bolts, Ring Bolts, Socket Head Bolts, Square Head Bolt|Comments Off on Anti Corrosion Treatment Method of Hexagon Socket Bolts Surface

How to Process Bolt Head and Thread

How to Process Bolt Head and Thread? The forming of bolt head adopts cold heading plastic processing. Compared with cutting, the metal fiber (metal wire) is continuous along the shape of the product, and there is no cutting in the middle. Therefore, the strength of the product is improved, especially the mechanical property is excellent. [...]

High Strength Dacromet Hex Bolts

High Strength Dacromet Hex Bolts are processed by Dacromet, so what are the advantages? 1. Excellent corrosion resistance. In the salt spray test, the UN etched zinc coating will corrode 1 μ m ~ 3 μ m thick rainbow colored film in 10 hours and wear out in 200 hours. The corrosion resistance of Dacromet [...]

By |January 13th, 2021|A325, A490, ASTM International Standard, Bolt Types, Bracket Bolt, Elevator Bolts, Heavy Hex Bolts, Hex Bolts, Lag Screw Bolts, Plow Bolts, Socket Head Bolts, Square Head Bolt|Comments Off on High Strength Dacromet Hex Bolts
  • High-Strength Grade 8.8, 10.9, 12.9 Hexagon Bolts

High-Strength Grade 8.8, 10.9, 12.9 Hexagon Bolts

High-Strength Grade 8.8, 10.9, 12.9 Hexagon Bolts Steel Structral bolts are a kind of high strength bolts and also a standard part. Fastening performance is better, for steel structure, engineering, so that the role of fastening. General steel structure, the requirements of the steel bolts are 8.8 or more, there are 10.9, 12.9, all of [...]

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 [...]

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. [...]

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

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

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

Construction of High Strength Bolts

The following problems should be paid attention to in the construction of high strength bolts: (1) Surface rust, oil stain, burr and weld bead on bolt hole wall shall be cleaned. (2) After treatment, the contact friction surface shall meet the requirements of anti scratch coefficient. The high-strength bolts used shall be matched with nuts [...]

By |July 23rd, 2020|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts|Comments Off on Construction of High Strength Bolts

High Strength Wind Power Bolt

As one of the most widely used connection methods in wind power equipment, high-strength wind power bolt and nut connection has the advantages of simple construction, disassembly and replacement, good stress and fatigue resistance. The domestic high strength bolt connection construction method generally adopts the torque method. At present, most of the domestic mainstream wind [...]

By |July 12th, 2020|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts|Comments Off on High Strength Wind Power Bolt

Blackening Treatment of High Strength Bolts

The blackening treatment of high strength bolts mainly requires the appearance, including the following points: 1. The appearance of blackening treatment is blue black or dark black. 2. The crystal of the film is compact and uniform, and the product has no exposed bottom, no obvious color difference, no whitening and other abnormal phenomena. If [...]

By |July 10th, 2020|A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Bolts, High Strength Bolts, High Strength Structure Bolts|Comments Off on Blackening Treatment of High Strength Bolts

About Hot-dip Galvanized Hexagon Screw

The hot-dip galvanized hexagon screw is to place the bolt in the high-temperature zinc solution of 600 ℃ so that its surface is coated with a dark gray surface. The advantages of hot-dip galvanized hexagon screw are strong adhesion of zinc coating, thick coating and strong corrosion resistance. Hot dip galvanized bolts are used for [...]

By |June 25th, 2020|A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hexagon Bolt, High Strength Structure Bolts|Comments Off on About Hot-dip Galvanized Hexagon Screw

About High Strength Black Bolt

Production process of high strength black bolt: Rack mounting → oil removal by boiling alkali solution → water cleaning → rust removal by hydrochloric acid solution → water cleaning → boiling water heating → oxidation → water cleaning → saponification → water cleaning → self drying → hot oil soaking → oil control → inspection [...]

By |June 23rd, 2020|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts|Comments Off on About High Strength Black Bolt

Difference between High Strength Hexagon Bolt and Ordinary Bolt

From the following three aspects, the difference between high strength hexagon bolt and ordinary bolts is introduced. In terms of strength grade High strength hexagon bolts are widely used. The strength grades of 8.8s and 10.9s are commonly used, of which 10.9 is the most. The strength grade of ordinary bolts is lower, generally 4.4, [...]

By |June 15th, 2020|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Difference between High Strength Hexagon Bolt and Ordinary Bolt

Material and Performance of High Strength Hexagon Socket Bolt

As a small hardware component, high strength hexagon socket bolt is widely used, ranging from a small electronic product and mechanical equipment to automobiles, airplanes, ships, etc., which need to move to high-strength hexagon bolts. In addition, the high-strength hexagon bolt is applied to the following industries: electronic industry, electrical industry, electrical industry, power industry, [...]

By |June 13th, 2020|A307, A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Material and Performance of High Strength Hexagon Socket Bolt