Application: A307B Bolts are commonly used for flange joints in piping systems with cast iron flanges. A307B Bolts have a tensile strength range of 60-100 KSI. These are very similar to A307 Grade A, only the head dimensions are different; A307A uses a standard Hex head where as the A307B Bolts use a Heavy hex [...]
ASTM A193 Alloy Steel Bolts WINDO METAL Inc. is your source for ASTM A193/A320 Alloy Steel Bolts from 3/8” to 4” Diameter in a wide variety of lengths, thread lengths and finishes Hot Dip Galvanized, Mechanical Galvanized, Zinc Plated, Yellow Zinc Plated, Cadmium Plated, Yellow Cadmium Plated, Blue Xylan® , Blue Teflon®, Green Xylan®, Green [...]
We keeps ASTM A307 and A307B hex bolts in stock. We also stock the ASTM A563 Hex Nuts (Heavy and Finish) to go with these bolts. ASTM A307 SIZES & SPECIFICATIONS The ASTM A307 specification covers carbon steel bolts, rods/studs and anchor bolts ranging from 1/4″ through 4″ diameter. This is your everyday, run of [...]
ASTM A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. It defines mechanical properties for bolts that range from 1⁄2 to 1 1⁄2 inches (13 to 38 mm) in diameter. The equivalent metric standard is ASTM A325M, which is [...]
DIN 6914 Hex Bolts For High Strength Struct. Bolting DIN 6914 – Hex Bolts For High Strength Struct. Bolting manufacturers & suppliers in india, Carbon Steel/ Alloy Steel/ Stainless Steel DIN 6914 – Hex Bolts For High Strength Struct. Bolting manufacturers in india ISO 9001:2008 Certified Manufacturer & Suppliers Of SS DIN 6914 – Hex [...]
Heavy Hex Bolts are designed for use in a variety of high temperature, high strength industrial applications, such as with steel fabrication and general construction. They feature a thicker head than standard or regular hex bolts, and offer a greater bearing surface that distributes the clamping load over a wider area. Heavy hex bolts can [...]
Attention Problems in Installation of High Strength Hexagonal Bolts In the installation of high strength hexagonal bolt, we need to pay attention to the following matters to ensure the quality of high strength (including internal and external) hexagonal bolts. 1. Installation and construction of high-strength hexagonal bolt should be avoided in rainy and snowy weather [...]
There are five main ways to distinguish high strength national standard bolts from fake bolts: 1. Look at the logo, the packing box of the general bolt has the logo. It is divided into 8.8, 10.9 and 12.9 grades. Generally, there is no grade mark on the hexagonal plane of hexagonal bolts. Generally, high strength [...]
How are the bolt heads and threads processed? The forming of bolt head adopts cold heading plastic processing. Compared with cutting processing, the metal fibers are continuous along the shape of the product without cutting in the middle, which improves the strength of the product, especially the mechanical properties. Cold upsetting process includes cutting and [...]
Heavy external hexagonal bolts: Standard: A325M. Level: 4.8/5.8/6.8/8.8/10.9/12.9; Grade 2/5/8. Specification: M6-M24; 1/4 inch-1 inch. Length: 10mm-270mm; 1/2inch-10inches. Surface treatment: natural color, blackening, galvanizing, hot galvanizing, dacromet. Packing: 25 kg in bulk and 36 cases in pallets. Or according to customer requirements. Heavy external hexagonal bolts application: It is suitable for fixing heavy loads on [...]
High strength galvanized bolt is galvanized, so what are their advantages? Hot dip galvanizing is also used to prevent corrosion on the surface of screw, bolt and nut. High strength galvanized bolt has better corrosion resistance than galvanized screw, but the cost is higher, and high strength structure is not suitable for hot dip galvanizing. [...]
High strength Dacromet bolt is treated by Dacromet, so what are the advantages? 1. Superior corrosion resistance. Unetched galvanized coatings are usually corroded by rainbow colored film with thickness of 1-3 micron for 20 hours in salt spray test. The corrosion resistance of Dacromet treated metal surface is about 10 times higher than that of [...]
Ultra-long bolts are usually constructed by the method of torque-one-axis force. They are divided into two stages: initial and final twisting. Torque coefficient refers to the coefficient between the torque and the axial force of the bolts in the process of tightening. Generally speaking, it has a great relationship with the friction coefficient of the [...]
Points for Attention in Connecting of Building Steel Structures Bolts 1 In order to make the connection reliable, the number of permanent bolts should not be less than two for each member on the joint and at the end of the splice joint. However, one end connection can be used for the patches of composite [...]
High-strength wind power bolt-nut connection has no requirement for bolt fastening axial force, so the bolt fastening construction is based on operator's hand feeling and the shape control of connecting joint. Generally speaking, an operator can tighten the nut with ordinary wrench by his own strength to ensure that the connecting contact surface can be [...]
The blackening process of blackened hexagonal bolts has the advantages of safety, no electricity, high efficiency, low cost, simple equipment, easy operation and strong process adaptability. The specific process is as follows: 1. Cleaning 2. Degreasing: the workpiece must be completely immersed in the degreasing solution; the concentration of the degreasing solution is 12-14, the [...]
High strength galvanized bolts can be divided into high-strength hot-dip galvanized bolt and high-strength cold-dip galvanized bolt according to different production processes. Generally, hot-dip galvanized bolts are used a little more, because the cold-dip will drop after a long time. Surface treatment of high strength galvanized bolts is generally based on customer requirements, the commonly [...]
In our work, we often use hot galvanized hexagonal bolts, which have many advantages and are loved by customers and developed rapidly in the market. Generally speaking, the top surface of hot-dip galvanized hexagonal bolts is marked with convex or concave characters, or concave characters are used on the side of the head, including performance [...]
High strength hex bolts refer to performance grades above 8.8. They are usually more common in 8.8 and 10.9 and have greater tensile strength. Therefore, they are mainly used in outdoor projects such as wind power and dynamic machinery. When selecting high-strength hex bolts, it is generally considered from the perspectives of raw materials, strength [...]
In general, there are two Hexagon bolt manufacturing process, the first is the punch and the second is the filature. The advantage of this process is that the cost is lower, but the quality does not meet the high strength requirements. Here is a process for producing a hexagonal bolt using a cold heading machine. [...]