.

Petrochemical Nuts And Bolts

The standard refers to the American ASTM or ASME standard with new and unique technical clauses added, which is suitable for a type of petrochemical fasteners used in high temperature and high-pressure environments, including bolts, studs, nuts, etc.

The mechanical properties and materials specified in GB/T3098/8 "Mechanical Properties of Carbon Steel Fasteners Part VIII Heat-resistant Threaded Connections" are suitable for fasteners that can withstand high temperature, alternating loads, and to a greater extent. Be sure to tighten the axial force.

High temperature and high-pressure petrochemical fasteners- commodity fasteners and special fasteners

  1. wind energy fasteners:
  • The type and size of hexagon head bolts meet the requirements of GB/T5782, A and B grades. The mechanical properties of these petrochemical fasteners refer to the performance grades of carbon steel bolts according to GB/T3098/1 standard: A2-50, A4-50, A2-70, A4-70;

  • The nut type conforms to GB/T6170 I-type nut and special nut (pipe flange nut). Its mechanical properties refer to the performance grades of carbon steel according to the GB/T3098/2 standard: grades 6 and 8; the performance grades of stainless steel nuts of GB/T3098/15 are A2-50, A4-50, A2-70, A4-70 ;

  1. Fasteners:
  • In order to be suitable for the conditions of high-temperature resistance, low-temperature resistance, and environmental corrosion resistance, formulate suitable special fasteners, such as full-threaded studs for pipe flanges, in accordance with the provisions of GB/T901. The dimensions of hexagon head bolts and nuts shall be carried out according to national standards.

  • Selected materials (grades) include medium carbon alloy steels: 35CrMo (applicable temperature +100-525℃); 25Cr2MoV (applicable temperature>-20--575℃); 42 CrMo (applicable temperature +100-525℃). The strength is between 690~890Mpa, that is to say, the medium carbon alloy steel is tempered at high temperature (550℃<=tempering temperature<=600℃) to obtain comprehensive mechanical properties to meet the service of high-temperature environment.

  • Stainless steel materials selected are: 0Cr18Mi9 (applicable temperature -196--800 ℃); 0Cr17Mi12Mo2 (applicable temperature +196--800 ℃); the strength of stainless steel material obtained by solution treatment is between 690~890Mpa, and the performance level is A2- 70 A4-50 A4-80 grade.

  • Using American standards, using stainless steel grades and materials: ASTM A193 B8 CL.2 (for temperature +196-525℃); A193 B8M CL.2 (for temperature +196-525℃); A453660 (for temperature +29- 525℃); also includes A320L7 suitable for low temperature and high-pressure environment (applicable temperature -100℃).

  • Special grade nut material (grade) can choose medium carbon alloy steel: 30CrMo, 35CrMo; guaranteed load

There are many fastener manufacturers, but we are one of the best choices for you.



Send product request

To: Jiangsu Aokai New Material Technology Co., Ltd
Your E-mail:
Message text:


Send to other suppliers

Other supplier products

PTFE and Silicone Fabric Applied in Transportation Industry
PTFE and Silicone Fabric Applied in Transportation Industry PTFE coated fiberglass combine nonstick property of PTFE with exceptional strength of glass fabric, make it well suitable as release sheet during t...
GB/T 12868 T Nuts
GB/T 12868 T Nuts GB/T 12868 Black T NutsFeatures: The principle of the inclined plane is adopted, the deformation of the inclined plane is integrated to form a thre...
Petrochemical Nuts And Bolts
Petrochemical Nuts And Bolts The standard refers to the American ASTM or ASME standard with new and unique technical clauses added, which is suitable for a type of petrochemica...
Silicone Coated Mesh Fabric
Silicone Coated Mesh Fabric Silicone mesh fabricis a new high performance and versatile composite material. It can be used as a grid conveyor belt, which is resistant to high ...
PTFE Series Welding Machine Belt
PTFE Series Welding Machine Belt The seamless stringer belt is made of military Kevlar (aramid) or imported high-strength glass fiber yarn through circular weaving equipment to w...
All supplier products

Same products

NSF H-1 Food Grade Fluorine PFPE Grease for Chemical and High Temperature, Extreme Pressure
NSF H-1 Food Grade Fluorine PFPE Grease for Chemical and High Temperature, Extreme Pressure Seller: Dongguan Vnovo New Material Technology Co., ltd ●NSF H1 certificatedas non-toxic and no stimulating or volatile chemical materials; ●Great cost p...
Food Grade Silicone Grease with PTFE for O-rings Bearings Gears
Food Grade Silicone Grease with PTFE for O-rings Bearings Gears Seller: Dongguan Vnovo New Material Technology Co., ltd ●Silicone base oil, provides long-lasting lubrication in humid environments; ●With PTFE added, g...
NSF H-1 Food Grade Silicone Grease for O-rings
NSF H-1 Food Grade Silicone Grease for O-rings Seller: Dongguan Vnovo New Material Technology Co., ltd ●Great performance of long-term lubricating in humid environment; ●Adopted hydrophobic thickener...
Petrochemical Nuts And Bolts
Petrochemical Nuts And Bolts Seller: Jiangsu Aokai New Material Technology Co., Ltd The standard refers to the American ASTM or ASME standard with new and unique technical clauses a...
sillicon carbide
sillicon carbide Seller: Zhenhuan Metallurgical Refractory Co. ltd. Silicon carbide Silicon carbide is made of quartz sand, petroleum coke (or coal coke), wood chips...