Monthly Archives: July 2020

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How to Distinguish High Strength Bolts

In order to distinguish high strength bolts, the following three methods are mainly used: With naked eyes, high strength bolts can be divided into high-strength external hexagon bolts and high-strength inner hexagon bolts. These high strength bolts are generally marked with strength grade and hardness grade. Generally, the screw head is marked with bolt grade. [...]

By |July 31st, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on How to Distinguish High Strength Bolts

Process of Stainless Steel Hexagon Bolt

The technological process of stainless steel hexagon bolt is as follows: 1. Normalizing: heat the stainless steel hexagon bolt to the appropriate temperature above the critical point AC3 or ACM, keep it for a certain time, and then cool it in the air to obtain pearlite structure. 2. Annealing: heating the hypoeutectoid stainless steel hexagon [...]

By |July 29th, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, Stainless Steel Bolts|Comments Off on Process of Stainless Steel Hexagon Bolt

Production Process of High Strength Hexagon Bolt

The following content is about the production process of high strength hexagon bolt. The production process of high strength hexagon bolt generally starts with the purchase of bolt wires. If you need to make high-strength hexagon bolts, you should first purchase the same specifications and models of bolts and wires. It is also necessary to [...]

By |July 26th, 2020|Bolt Types, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Production Process of High Strength Hexagon Bolt

How to Identify High Strength Bolts

Identify High Strength Bolts is also skilled, generally in this industry for a long time, you will learn the skill, the following is for everyone to sort out some of the knowledge. 1. Identification: there are obvious strength grade marks on the package of bolts manufactured by regular manufacturers. Such as 8.8, 10.9 and 12.9. [...]

By |July 24th, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts, Stainless Steel Bolts|Comments Off on How to Identify High Strength Bolts

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

Benefits of High Strength Hexagon Bolts

High strength hexagon bolts bring many benefits to various industries, such as Improve the stress condition of the structure. The force of friction type high-strength bolt connection is transmitted by the friction force on the steel plate surface. The large area of transmission force and the phenomenon of stress concentration are improved, and the fatigue [...]

By |July 20th, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts, Socket Head Bolts|Comments Off on Benefits of High Strength Hexagon Bolts

Dacromet Bolt Coating Featurers

Dacromet bolt coating- apply coating (colored coating, Dacromet) on the workpiece as required, with appearance of silver, black or color, and salt spray test for more than 240 hours. Dacromet: the appearance of Dacromet coating is uniform silver gray. The coating contains 80% thin zinc sheet and aluminum sheet, and the rest is chromate. It [...]

By |July 18th, 2020|A325, ASTM International Standard, Bolt Types, Countersunk Bolt, F3125, F568M, Hex Bolts, Hexagon Bolt, Socket Head Bolts, Stud Bolt|Comments Off on Dacromet Bolt Coating Featurers

Hexagonal Bolt Materials

There are three kinds of Hexagonal bolt materials: carbon steel, stainless steel, copper. Carbon steel: We distinguish low carbon steel, medium carbon steel, high carbon steel and alloy steel by carbon content in carbon steel. 1. Low carbon steel C% ≤ 0.25% is usually called A3 steel in China. It is called 1008101510181022 in foreign [...]

By |July 16th, 2020|Bolt Types, Bracket Bolt, Carriage Bolts, Hex Bolts, Hexagon Bolt, Stainless Steel Bolts|Comments Off on Hexagonal Bolt Materials

Stainless Steel Hexagon Bolts Process Introduction

The manufacturing process of stainless steel hexagon bolts is as follows: Normalizing: the screw is 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. Annealing: the hypoeutectoid screw is heated to 20-40 ℃ above AC3 and cooled slowly in [...]

By |July 14th, 2020|A193, ASTM International Standard, Bolt Types, Bolts & Nuts Grade, Grade 8.8, Heavy Hex Bolts, Hex Bolts, High Strength Bolts, Stainless Steel Bolts|Comments Off on Stainless Steel Hexagon Bolts Process Introduction

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

Hexagon Head Bolts Installation and Application

Hexagon head bolts installation and application is directly related to the quality and service life of fasteners, and the safety of bolts is the primary consideration. Main factors affecting hexagon head bolt: the selection of material, thickness of steel plate, processing and cutting, surface coating and installation of steel structure parts shall comply with design [...]

By |July 8th, 2020|Fastener, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Hexagon Head Bolts Installation and Application

Characteristics of Steel Structure Bolts

Steel structure bolts are high strength bolts, and also kinds of standard parts. Good fastening performance, used in steel structure, engineering, so that the tightening effect. General steel structure, the requirements of steel structure bolt are 8.8 grade or above, there are 10.9 grade, 12.9 grade, all of them are high strength steel structure bolts, [...]

By |July 5th, 2020|Bolt Types, Carriage Bolts, Lag Screw Bolts, Stainless Steel Bolts, Structural Bolts|Comments Off on Characteristics of Steel Structure Bolts

Grade 12.9 Hex Bolts Types

According to the items, the Grade 12.9 Hex Bolts can be divided into grade 12.9 external hexagon screw, grade 12.9 hexagon socket head screw (cup head), grade 10.9 countersunk head hexagon screw (flat cup), grade 10.9 semicircular head hexagon socket head screw (round cup), grade 12.9 set screw (machine meter), grade 12.9 hexagon plug screw [...]

By |July 1st, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, Socket Head Bolts|Comments Off on Grade 12.9 Hex Bolts Types