Stainless Steel Blind Steel Flange in 304

September 16, 2025

Model NO.: Flange
Connection: Welding
Material: Carbon Steel
Function: Connect with Pipe
Type: Blind Flange
Trademark: Tianjin U-ideal Instrument
Specification: ASTM, ASME, DIN, JS, GOST
Origin: Tianjin, China
HS Code: 730799000
Types' Specification Welding Neck 1. Ideal for high-pressure, subzero, or elevated temperature environments. 2. The hub is tapered and bored to match the pipe's inside diameter, ensuring smooth flow and reducing turbulence and erosion. 3. Easy to radiograph and provides excellent stress distribution. Slip-on 1. Not typically used in high-stress applications due to limited hub and weld attachment strength. 2. Slips over the outside of the pipe. 3. The inside of the flange is welded at the hub and the end of the pipe. Lap Joint 1. Used where bolt alignment or access for cleaning is required. 2. Similar to a slip-on flange when paired with a lap joint stub end. 3. Features a radius at the intersection of the flange face and bore to match the lap joint stub end. Threaded 1. Used where welding could be hazardous. 2. Designed for low-pressure and non-cyclic applications. 3. The bore is threaded to match the pipe thread. 4. Tapered to seal both the pipe and flange. Socket Welding 1. Suitable for small-diameter chemical processes, hydraulic, and steam distribution lines. 2. Similar to a slip-on flange. 3. The counterbore matches the pipe bore, allowing unrestricted flow. 4. The counterbore from the hub side fits the pipe’s outer diameter; the pipe can be inserted into the socket with a fillet weld at the hub. Blind 1. Used to close the ends of piping systems. 2. Has no bore. 3. Allows access to sealed lines. Other Flanges Orifice, Expander, Reducing, Lightweight, Studding Outlets, Long Weld Necks, Metric, Navy Drawings, Customer Drawings
Full Name Flanges
Material Stainless Steel 304, 304L, 316, 316L, Carbon Steel
Standard: ANSI, BS, DIN, EN1092-1, JIS
ANSI Flanges
Dimension: ANSI B16.5, B14.47, B16.36, B16.48
Material Spec.: ASTM A182, A351, DIN, ASTM A105, A216 WCB
Material Grades: F305, F304L, F316, F316L, CF8, CF8M, CF3M
DIN1.4301, DIN1.4306, DIN1.4401, DIN1.4404
DIN1.4308, DIN1.4408, DIN1.4306, DIN1.4409
DIN1.0402, DIN1.0460, DIN1.0619
Class: 150, 300, 400, 600, 900, 1500, 2500
Flange Type: Weld Neck, Threaded, Slip-on, Lap Joint, Socket Weld, Blind
BS Flanges
Dimension: BS4504
PN: 2.4, 6, 10, 16, 25, 40
Flange Type: Weld Neck, Threaded, Slip-on, Lap Joint, Socket Weld, Blind
DIN Flanges
Description: 1) Blind Flange
DIN2527, Pressure Rating: 6 - 100 bar
2) Flat Flange for welding (Slip on)
6Bar DIN2573, 10Bar DIN2576, 16Bar DIN2502, 25/40Bar DIN2503
3) Welding Neck Flange
1/2.5Bar DIN2630, 6Bar DIN2631, 10Bar DIN2632, 16Bar DIN2633,
25Bar DIN2634, 40Bar DIN2635, 64Bar DIN2636, 100Bar DIN2637,
160Bar DIN2638, 250Bar DIN2628, 320Bar DIN2629, 400Bar DIN2627
4) Lapped (lapped joint) flange, Plain collar
6Bar DIN2641, 10Bar DIN2642,
5) Loose flange and ring for welding (slip-on flange and plain collar)
6Bar DIN2652, 10Bar DIN2653, 25Bar DIN2655, 40Bar DIN2656,
6) Loose flange and ring with neck for welding
10Bar DIN2673
7) Oval plain threaded flange
6Bar DIN2558
8) Oval plain, with neck threaded
10/16 Bar DIN2561
9) Thread flange with neck
6Bar DIN2565, 10/16 DIN2566, 25/40Bar DIN2567,
64Bar DIN2568, 100Bar DIN2569
10) Long neck welding flange
10/25Bar DIN28115
11) Hubbed slip-on flange for welding
10Bar DIN86029, 16Bar DIN86030
EN1092-1 Flanges
Description: 1) Plate (Slip on) flange for welding
6/10/16/25/40/63/100 Bar
2) Loose plate flanges with weld-on plate collar
6/10/16/25/40/63 Bar
3) Loose plate flanges with weld-neck collar
6/10/16/25/40/63 Bar
4) Blank (Blind) Flange
6/10/16/25/40/63/100 Bar
5) Welding Neck Flange
6/10/16/25/40/63/100 Bar
6) Hubbed slip-on flange for welding
6/10/16/25/40/63/100 Bar
7) Hubbed threaded flanges
16/40/63/100 Bar
8) Integral Flanges
6/10/16/25/40/63/100 Bar
9) Weld-on plate collars
6/10/16/25/40 Bar
10) Lapped pipe ends
6/10/16/25/40 Bar
11) Weld-Neck Collars
6/10/16/25/40 Bar
JIS Flanges
Description: 2/5/10/16/20/30/40/63 kg/cm²

HF Induction Heating

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.

Induction annealing,metal heat treatment services, induction hardening equipment, heating technology, industrial furnace

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