Petrochemical Nuts And Bolts
Cantidad : 10,000pcs/ Precio : unit price $15-20
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. Common Commodity 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 ;
2. Special Petrochemical 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</span>℃) 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.
Persona a contactar : hky bjb, 010 87973098
Buen trato: comprar del vendedor
Por favor, lea nuestras condiciones de uso. También puede visitar nuestras preguntas frecuentes y ver nuestra información sobre los riesgos relacionados con la falsificación.
|
Esta página es acerca de los importadores y exportadores de Petrochemical Nuts And Bolts Buscar en la categoria : Varios / Descuento Buscar en la categoria : bolts, nuts, petrochemical |
Thursday 15 January 2009
Desiccated Coconut Desiccated coconut high fat fine and mediumg grades: - Moisture: 3% max, - FFA: 0.3 % max, - Oil content: 62% min, - Free from ecoli or bactereia, no foreign matterUbicación : 20/5 Dinh Bo Linh str Binh Thanh Distr, 84 Ho Chi Minh, Persona a contactar : Smith Nguyen...
vietdelta industrial co.,ltd
- smithvn
- 84 - Ho Chi Minh
- 84(08)35114928
- 09 19 89 60 89
Sunday 24 August 2008
Precio : fob
we are an italian off-shore firme operating in the textile sector with an italian experience of 25 years we offer a wide range of services: dyeing and finishing cloths for the fashion market. we meet our client 's high expectation by delivering the best service at the compétitif price...
Wednesday 16 January 2013
Cantidad : 100 - Precio : USD5279
Engine Type 686cc liquid-cooled w/fan, 4-stroke; SOHC, 4 valves Bore x Stroke 102.0mm x 84.0mm Compression Ratio 9.2: 1 Fuel Delivery Yamaha Fuel Injection (YFI), 44mm Ignition 16-Bit ECU Starting System Electric Transmission 5-speed w/reverse; wet multiplate clutch Drive Train 2WD...
KRAMBA TRANSPORTATION
- 29431 - Batam
- 6285762075388





