Carbon Steel: Shot Blasted, Black Painting, Rust-Proof Oil, Transparent Oil, Galvanizing, Hot Galvanizing Alloy Steel: Shot Blasted, Black Painting, Rust-Proof Oil, Transparent Oil, Galvanizing, Hot Galvanizing Stainless Steel: Pickled, Polish Company Information: Beijing Yong Hao Technology Co., Ltd. is a professional large-scale supplier of water and plumbing system products. Headquartered in Beijing and Shijiazhuang, we specialize in PPR pipes and fittings, HDPE pipes and fittings, PVC pipes and fittings, valves, water meters, and more. With over 10 years of development, our company has earned a strong reputation for quality products and attentive service, gaining recognition from both domestic and international customers, peers, and experts. We are committed to providing high-quality products and services, supporting the growth of our employees, and creating value for society. We aim to build long-term, responsible partnerships with customers, suppliers, and stakeholders for mutual success. FAQ: Induction annealing,metal heat treatment services, induction hardening equipment, heating technology, industrial furnace Ningbo Dedao Electronic Technology Co., Ltd , https://www.nbdedao.com
Product Name
Blind ASME B16.48 Lap Joint A182 F304 Spacer Flange
Application
Oil, Gas, Chemical, Shipbuilding
Standard
DIN
Color
Black
Size
1/2''-48'' (DN15-DN1200)
Usage
Oil, Gas, Water, Industrial
Surface Treatment
Thread
BSPP, BSPT, NPT
Payment Terms
TT or L/C with Trade Assurance
Shipping Terms
FOB, CIF, CFR
Application:
A: We are a manufacturer based in China.
A: MOQ can be customized according to customer requirements (e.g., FLANGE DN20, MOQ 500KGS).
A: Yes, we can provide free samples, but courier fees are not included.
A: For payments under $5,000, 100% in advance. For payments over $5,000, 50% T/T in advance, and 50% balance before shipment.
Model NO.: Flange
Manufacturing Way: Forging
Product Name: Flange
Size: DN15 to DN600, DN15 to DN600
Brand Name: Yonghao
Model Number: OEM Supported
Application: Pipeline Systems
Usage: Fluid Pipe, Oil Pipe, Gas Pipe
Delivery Time: 15-30 Working Days
Repeat Order: 100%
Certificate: ISO9001
Payment: T/T in Advance, Balance Before Shipment
Trademark: OEM
Transport Package: Customized Based on Customer Needs
Specification: Standard
Origin: Beijing, China (Mainland)
HS Code: 3917400000
Flanges are essential components used in oil and gas equipment, allowing for the easy assembly and disassembly of pipeline systems. These flanges typically feature bolt holes and a gasket profile to ensure a secure and pressure-tight connection. They are widely applied in various industries such as petroleum, chemical, power generation, shipbuilding, and more.
High frequency induction heating system is a technology that uses high-frequency alternating current to generate eddy currents in metal workpieces to achieve heating. Its operating frequency is usually between several kilohertz to several hundred kilohertz, and even up to megahertz level. This heating method not only has fast heating speed and high efficiency, but also can achieve highly concentrated heating of metal workpieces, especially suitable for heating treatment of small-sized and complex shaped components.
working principle
The basic principle of high-frequency induction heating system is to use electromagnetic induction. When high-frequency current passes through an induction coil, a strong magnetic field is generated. When a metal workpiece placed in a magnetic field is subjected to magnetic force, eddy currents, or induced currents, are generated inside. These eddy currents convert electrical energy into thermal energy through Joule effect (resistance heating), resulting in rapid heating of the workpiece. It is worth noting that high-frequency current can cause significant skin effect, which means that heat is mainly concentrated on the surface of the workpiece, which is extremely beneficial for some applications that require surface hardening.
Main components
High frequency power supply: Provides high-frequency alternating current.
Induction coil: forms a high-frequency magnetic field.
Cooling system: Keep the coils and other components at a suitable operating temperature.
Control system: Adjust frequency and power, monitor heating process.
Fixtures: Position workpieces and optimize heating efficiency.
Characteristics and advantages
Fast heating speed: High frequency current can instantly heat the workpiece to the desired temperature.
High thermal efficiency: Most of the energy is directly applied to the workpiece, reducing energy loss.
Precise control: Heating depth and area can be controlled by adjusting frequency and power.
Flexibility: Suitable for workpieces of various shapes and sizes.
Pollution free: No harmful gases are produced, and the operating environment is cleaner.
application area
High frequency induction heating systems are widely used in multiple industries:
Metal processing: including welding, forging, and hot forming.
Heat treatment: surface quenching, tempering, annealing, etc.
Jewelry: Welding of gold and silver products.
Electronic components: Solder heating in semiconductor packaging.
Medical equipment: Welding of small components during the production of medical devices.
Automotive industry: Hot assembly of transmission gears, piston pins, and other components.
Development Trends
With the advancement of technology, high-frequency induction heating systems are developing towards higher frequencies, higher power, and greater intelligence. The application and technological improvement of new materials have further improved the energy efficiency of high-frequency induction heating systems, and also promoted their application expansion in emerging fields such as new energy vehicle battery manufacturing and composite material forming. The intelligent control system makes the heating process more precise, improving overall production efficiency and product quality.
September 18, 2025