Difference between 304 and 420 stainless steel pipe?
November 6, 2023
Ductile Iron Water Pipe Systems Examination : Construction, Installation, and Properties
November 9, 2023
Stainless Steel 304L/316 Butt Welded Seamless Con Reducer
A Stainless Steel 304L/316 Butt Welded Seamless Con Reducer is a type of pipe fitting used in piping systems to connect pipes of different diameters. The term “con reducer” is short for “concentric reducer,” which maintains a centerline common to both the larger and smaller pipe.
| Reducer | |
| Type | concentric reducer(con reducer) , eccentric reducer(ecc reducer), seamless reducer , butt welding reducer,carbon steel reducer(CS reducer), mild steel reducer(MS reducer), alloy steel reducer(AS reducer), stainless steel reducer(SS reducer)… |
| Size | 1/2″-48″(DN15-DN1200) |
| Varieties | SCH5,SCH10,SCH20,SCH30,STD,SGP, SCH40, SCH60, XS, SCH80, XXS,SCH100,SCH120,SCH140,SCH160 |
| Standred | ANSI B 16.9/ANSI B16.28/MSS SP43/MSS P75/JIS2311/JIS 2312/JIS2313/ DIN2615 /GB-12459/GB-T13401,Gost17378 |
| Material | Carbon steel: ASTM A234 GR WPB , ST37.2 , ST35.8… |
| Alloy steel: A234 WP5/WP9/WP11/WP22/WP91, A420 WPL6, A860 WHPY 42/52/60/65/70/80… |
|
| Stainless steel: A403 WP304/TP304 , WP304L/TP304L , WP316/TP316 , WP316L/TP316L, WP321/TP321 , WP310/TP310….. |
|
| Surface treatment | 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 | |
| Application Fields | Chemical Industry /Petroleum Industry /Power Industry/Metallurgical Industry Building Industry /Ship-building Industry |
| PACKING | plywood cases, pallets, nylon bags or according to the customers’ requirements |
I. 304L and 316 Stainless Steel
304L and 316 are types of austenitic stainless steel known for their excellent formability and weldability.
304L stainless steel is a low-carbon variant of 304 stainless steel. The “L” in 304L stands for “Low carbon.” Lower carbon content reduces the risk of chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion.
316 stainless steel has a similar composition to 304 stainless steel but includes molybdenum, which improves its resistance to corrosion, particularly in chloride environments. This makes it suitable for use in marine applications or environments with high chloride exposure.
II. Butt Welded Seamless Con Reducer
In the context of a Stainless Steel 304L/316 Butt Welded Seamless Con Reducer:
- Butt Welded: This refers to the method of connecting the reducer to the pipe. In butt-welding, the pipes and the reducer are aligned end-to-end (or “butt to butt”) and then welded together. This creates a strong, seamless connection that can withstand high pressures and temperatures.
- Seamless: This indicates that the reducer is made from a single piece of metal with no seams. This increases its strength and resistance to leaks.
- Con Reducer (Concentric Reducer): This is a type of reducer that maintains the centerline alignment of the piping on both the inlet and outlet ends. It is shaped like a cone, with the diameter gradually decreasing from one end to the other.
III. Application
A Stainless Steel 304L/316 Butt Welded Seamless Con Reducer is primarily used in piping systems where the pipe diameter needs to be changed. The applications can range from food processing, pharmaceutical companies, petrochemical plants, to oil and gas pipelines, where the fluid or gas being transported needs to be reduced in volume or forced into a smaller diameter pipe.
IV. Advantages
The advantages of a Stainless Steel 304L/316 Butt Welded Seamless Con Reducer include:
- Corrosion Resistance: Both 304L and 316 stainless steel offer excellent corrosion resistance, making them suitable for a wide range of environments.
- Weldability: These materials are easy to weld, allowing for strong, seamless connections.
- Strength: The butt-welded, seamless design provides a high level of strength, enabling the reducer to withstand high pressures and temperatures.
- Versatility: The concentric reducer design can be used in a wide variety of piping systems, making it a versatile choice for many applications.
Related posts
ASTM A554 specification covers ferritic, welded austenitic and austenitic-ferritic duplex stainless steel mechanical tubing intended for use in structural, ornamental, exhaust and other applications where mechanical properties, appearance, or corrosion resistance is needed. ASME SA554 Tubing is commonly shipped without protective coating. ASTM A554 specification covers as welded or cold-reduced mechanical tubing in sizes to 16 inch (406.4 mm) outside dimension and in wall thicknesses 0.020 inch (0.51 mm). ASTM A554 Welded Mechanical Tubing made from flat-rolled steel by an automatic welding process without the addition of filler metal. ASTM A554 Tubes furnished in one of the following shapes – square, round, rectangular, or special.
Duplex-grade stainless steel alloys have ferritic/austenitic properties, giving these materials superior strength and excellent resistance to oxidation. While the duplex-grade family includes a wide range of specific formulations, duplex S31803 (2205) and super duplex S32750 (2507) stainless steel are two of the most common. These stainless steel products are extremely versatile, with many applications in the oil and gas, petrochemical, and chemical processing industries.
S31803 is the Unified Numbering System (UNS) designation for the original duplex stainless steel. The UNS system was created by a number of trade groups working together in the 1970’s, to reduce confusion from the same alloy being called different things or vice-versa. Each metal is indicated by a letter followed by five numbers, where the letter indicates the family of metals i.e. S for stainless steels.
Alloy 347 stainless steel belongs to the family of austenitic stainless steels and is known for its exceptional stability due to the presence of stabilizing elements. This alloy is highly weldable, and in most cases, annealing is not necessary after welding unless stress relief is desired. The remarkable resistance to oxidation and corrosion exhibited by 347 stainless steel makes it a reliable choice for various applications. Its high creep strength allows it to perform optimally at temperatures up to 1600 °F.
