Views: 21 Author: Site Editor Publish Time: 2025-01-07 Origin: Site
304 stainless steel pipe fittings are a general term for various pipe fittings made of 304 stainless steel. 304 stainless steel is a universal stainless steel material, belonging to austenitic stainless steel, with good corrosion resistance, heat resistance, low temperature strength and mechanical properties. It does not rust in weak corrosive media such as air, water, and steam. Therefore, 304 stainless steel pipe fittings are widely used in various fields.
Since 304 stainless steel is non-toxic, odorless, easy to clean and corrosion-resistant, it is widely used in food processing equipment, such as pipelines, storage tanks, mixers, etc. In the chemical industry, 304 stainless steel pipe fittings are often used to transport corrosive liquids and gases, such as acids, alkalis, salt solutions, etc.
What are stainless steel 304 pipe fittings?
Stainless steel 304 pipe fittings include stainless steel butt weld pipe fittings, socket weld fittings and threaded fittings. Stainless steel pipe fittings are widely used in the production of various equipment and parts due to their excellent corrosion resistance and formability. It is mainly composed of iron, chromium, nickel and other elements, of which the chromium content is about 18% and the nickel content is about 8%. This chemical composition enables stainless steel pipe fittings to exhibit good corrosion resistance in most environments, especially in oxidizing environments. In addition, stainless steel 304 pipe fittings also have good mechanical properties and heat resistance, and can maintain stable performance in a certain high temperature environment.
What are 304 stainless steel pipe fittings used for?
Stainless steel 304 pipe fittings are widely used in many fields due to their good comprehensive performance.
Chemical industry:
stainless steel 304 pipe fittings can be used to transport various chemical media, such as acid, alkali, salt solution, etc. Although the corrosion resistance of 304 stainless steel in some highly corrosive media is limited, it can still meet the use requirements for some weakly corrosive or moderately corrosive chemical media. In the connection of chemical production equipment, 304 stainless steel pipe fittings play an important role.
Mechanical manufacturing field:
In the hydraulic system of the machine, stainless steel 304 pipe fittings are used to connect hydraulic pipelines, transfer hydraulic oil, and realize the power transmission and control of the machine. Its high strength and corrosion resistance can withstand the high pressure and complex working environment in the hydraulic system, ensuring the reliability and stability of the hydraulic system.
What is the code for stainless steel pipe fittings?
HS Code used for Stainless steel fittings - Export
Hs Code | Description | No of Shipments |
73072100 | Flanges | 832 |
73072200 | Threaded elbows, bends and sleeves | 1112 |
73072900 | Other | 6420 |
73079990 | Other | 766 |
Stainless Steel 304 Butt Weld Pipe Fittings
Stainless steel 304 butt weld pipe fittings are made of stainless steel and connected to stainless steel pipes by welding. They include elbows, tees, crosses, reducers and other types, which are used to change the direction of the pipeline, branch or connect pipelines of different diameters.
When connecting the pipeline, align the welding part of the pipe fitting with the end of the pipeline, and then use the welding process to melt and fuse the metal materials of the two together to form a firm connection. This welding connection method can ensure the sealing and strength of the pipeline system, enabling it to withstand higher pressures and temperatures.
A403 WP304 Specification
Size Range | 1/2" - 80" / DN15 - 2000 |
Thickness Schedule | SCH 10, 20, 40, STD, XS, 80, 100, 120, 140, 160, XXS |
Standard | ANSI / ASME B16.9, MSS SP 43 |
Stainless Steel Grades | ASTM A403 WP304/304L/304H, 316/316L, 310S, 317, 347, 904L |
Stainless Steel 304 Pipe Fittings Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr |
| ASTM A403 WP304 | MIN | 8 | 18 | |||||
| MAX | 0.08 | 2 | 0.045 | 0.03 | 1 | 11 | 20 |
Mechanical Properties of 304 Stainless Steel Pipe Fittings
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| ASTM A403 WP304 | 515 min | 205 min | 28 min |
ASTM A403 WP304 Fittings Available Types
Application Areas
◆ Petrochemical industry
◆ Food and beverage industry
◆ Medical and health industry
◆ Construction field
Stainless Steel 304 Forged Pipe Fittings
Stainless steel 304 forged pipe fittings refer to pipe fittings made of stainless steel materials and processed into specific shapes and sizes through forging processes. During the forging process, the metal billet undergoes plastic deformation under pressure, making its internal structure denser, thereby improving the strength and performance of the pipe fittings.
ASTM A182 F304 Specification
Standard | ASME B16.11 |
Size Range | 1/8″ to 4″ |
Pressure Rating | Class 2000LBS,3000LBS, 6000Lbs, 9000lbs. |
Alloy Steel | ASTM A182 F11 / 12 / 22 / 5 / 9 / 91 / 92 / 22 |
Stainless Steel | ASTM A182 F304 / 304L / 304H, 316 / 316L, 321, 310S, 317, 347, 904L |
Duplex Stainless Steel | ASTM A182 F51, F53, F44 |
Stainless Steel 304 Pipe Fittings Chemical Composition
CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | N |
ASTM A182 F304 | MIN | 8.0 | 18.0 | ||||||
MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 11.0 | 20.0 | 0.10 |
Mechanical Properties of F304 Stainless Steel Pipe Fittings
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % |
ASTM A182 F304 | 515 min | 205 min | 30 min | 50 min |
Socket Weld Pipe Fittings Types
Advantages of Stainless Steel Socket Weld Pipe Fittings
◆ No welding required
◆ Easy to adjust
◆ Reasonable sealing structure design
◆ Strong corrosion resistance
Threaded Pipe Fittings Types
Advantages of stainless steel threaded pipe fittings
◆ Reliability of threaded connection
◆ Convenient multiple disassembly and installation
◆ Unified standards and specifications
◆ Applicable to a variety of pipe materials
What is the difference between 304 and 316 stainless steel pipe fittings?
Corrosion resistance
304 stainless steel pipe fittings: have good atmospheric corrosion resistance, can remain stable for a long time in ordinary indoor environment, dry air and weak corrosive media (such as fresh water), and are not easy to rust.
316 stainless steel pipe fittings: due to the addition of molybdenum, it has stronger corrosion resistance to chloride ions. In the marine environment, chemical industry and some harsh environments with high humidity and containing chemical substances, the corrosion resistance of 316 stainless steel pipe fittings is significantly better than that of 304 stainless steel pipe fittings, which can effectively resist the erosion of chloride ions and extend the service life of the pipe fittings.
Processing performance
304 stainless steel pipe fittings: good processing performance, easy to cold and hot processing. In the cold processing process, such as bending, stamping, stretching, etc., 304 stainless steel can better adapt to the processing technology and is not prone to cracking and other defects. During hot processing, its thermoplasticity is also ideal, which is convenient for forging, rolling and other processes.
316 stainless steel pipe fittings: The processing performance is similar to 304, but due to the presence of molybdenum, its processing difficulty is relatively greater. During cold processing, the deformation resistance of 316 stainless steel is slightly higher than that of 304, and greater processing force is required. During hot processing, the control requirements for processing temperature and process parameters are more stringent to ensure the quality of pipe fittings.
Application areas
304 stainless steel pipe fittings: widely used in the field of building decoration. In ordinary industrial piping systems, 304 stainless steel pipe fittings are also widely used, such as water supply and gas supply pipelines.
316 stainless steel pipe fittings: mainly used in fields with extremely high requirements for corrosion resistance. In marine engineering, 316 stainless steel pipe fittings can resist the corrosion of seawater; in the chemical industry, they are used for pipelines, reactors and other equipment for conveying various corrosive chemical media; in the medical field, some medical devices also use 316 stainless steel pipe fittings, because of their good biocompatibility and corrosion resistance, they can ensure the safety and stability of the equipment.
