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Hexagon Socket Head Bolts External Hexagon Bolt


Hexagonal bolt actually refers to a fastener composed of a head and a screw. Bolts are mainly divided into iron bolts and stainless steel bolts according to their materials. In terms of iron, it is classified by grade, with the common ones being 4.8, 8.8, and 12.9. Stainless steel is classified by material as SUS201, SUS304, and SUS316 bolts. A complete set of hexagonal bolts consists of a bolt head, a nut, and a flat washer Hexagonal head bolt, also known as hex head bolt (partially threaded) - c hex head bolt (fully threaded) - c grade, also known as hex head bolt (rough) hex head bolt, black iron screw. The commonly used standards are: sh3404, hg20613, hg20634, etc. Hexagonal head bolt (referred to as hexagonal bolt) consists of a head and a threaded rod (<external threaded bolt), with the threaded rod equipped with a nut, used to tighten two parts with through holes. This type of connection structure is called bolt connection. If the nut and bolt rotate, the two parts can be separated, so the bolt connection is a detachable connection. The comprehensive performance grades of bolt materials used for connecting steel structures are divided into more than 10 grades, including 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, grade 8.8 and above bolts made of low-carbon alloy steel or medium carbon steel and subjected to relevant heat treatment (quenching, tempering) are generally referred to as high-strength bolts, while the rest are commonly referred to as ordinary bolts. The bolt performance grade symbol consists of two parts of numbers, representing the nominal tensile strength value and yield ratio of the bolt material.

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Hexagon Socket Head Bolts External Hexagon Bolt

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Founded in 1990, TongYang is a professional company specializing in developing and manufacturing chemical machinery and equipment for customers ,It has manufacturing license of grade A2 (the third type of pressure vessel) issued by state general administration of market supervision, license Key: :TS2210D94-2023. Tongyang has always been committed to the research and development, production, application of chemical machinery and equipment in fine chemical, petrochemical, food, biological and pharmaceutical industries. Our technology in develop distillation tower and separation equipment attain domestic leading level, Keep pace with international advanced level.

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Provide turnkey projects

Our team can provide you with turnkey engineering, you do not have to worry about the installation is not professional, we will complete the installation and debugging according to your specific requirements, at the same time, a professional training, to solve your worries.

 

Competitive Advantage

Abundant experience: more than 30 years experience in non-ferrous metal cladding and production;
Technical consulting service: technical consulting on material, welding, NDE, Welding, Heat treatment ;
Independent inspection service; in-process inspection, final inspection; Hydrostatic testing etc;
Transportation: have own export license, Yangzhou Port and Shanghai Port ,  2.4 kilometers away from Yangzhou Port and 226 kilometers away from Shanghai Port.

 

Varieties of manufacturing standards to meet the needs of the global market

GB150-2011; 
ASME U, U2 Certificate;
GOST 34347; 
ISO14001 , ISO 45001, ISO 9001; 
ASME SEC VIII DIV.1,ASME SEC VIII DIV.2 ; f.PED 97/23/EC with CE certificate; 

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