Stainless Steel Buttweld Fittings

Alloy Steel Tubes manufacturing unit’s – original photograph of Stainless Steel Buttweld Fittings

Stainless Steel

A short brief about stainless steel

Stainless steels have traditionally been divided into types depending on their microstructure at room temperature, which gives a rough indication of their composition and properties. Stainless Steel due to its peculiar traits of Weight-to-Strength Ratio, Corrosion Resistance, High Ductility and Durability is one of the most preferred metals in the industry.

Stainless steels can be divided into four main types: ferritic, martensitic, duplex, and austenitic

Martenstic : Are plain chromium alloys with relatively high carbon levels. Are included in the American Iron and Steel Institute (AISI) 400 series. These steels have a moderate corrosion resistance, high strength and hardness developed by heat treatment. They have poor weldability and are magnetic.

Ferritic : Are plain chromium alloys with low carbon levels and are also included in the AISI series. These steel have moderate to excellent corrosion resistance depending on chromium content. They cannot be strengthened or hardened and have poor weldability except in thin gauges. They are magnetic.

Austenitic : These steels are included in both the AISI 300 and AISI 200 series and contain nickel with low to very low carbon contents. These materials have excellent corrosion and high temperature oxidation resistance. Strength and hardness can be increased by cold work. They have excellent cryogenic properties. They are non-magnetic. In steels in the 200 series, the nickel is partially replaced by manganese. These variants have properties similar to the 300 series, but have higher strength and lower corrosion resistance.

Duplex : These steels contain less nickel than the austenitic alloys and have very low carbon contents. They have a duplex (mixed) crystal structure of ferrite and austenite. These steels have excellent corrosion resistance, particularly to pitting, crevice corrosion and stress corrosion cracking. They also have high strength, excellent weldability and are magnetic.

Common stainless steels specification:

Austenitic stainless steel is used extensively in chemical process plant all over the world because of its corrosion resistance, ease of fabrication and availability. In the nuclear fuel reprocessing industry, these qualities alone ensure the widespread use of stainless steel but other additional advantages of the material are ease of decontamination and the low cost maintenance of stainless steel structures. Austenitic stainless steel is also the core material of construction for process vessels and pipework.

Type 316L is also used for slightly reducing conditions or where chloride levels are significant, such as structures subjected to the external atmosphere. Type 316L is also used extensively for intermediate level waste containers because of the need for storage for long periods in the presence of chlorides. Types 309 and 304H are also used under higher temperatures where superior strength levels than the 304L grades are needed.

What is great about Stainless Steel

• Corosion resistance
• Wear Resistance
• Fire and heat resistance
• Hygiene
• Aesthetic appearance
• Strength-to-weight advantage
• Ease of fabrication
• Impact resistance
• Recyclability
• Long term value
• Low carbon foot-print

Grades in Stainless Steel:

304, 304L, 304H, 316, 316L, 316LN, 316Ti, 309, 310S, 317L, 321, 347, 410, 420, 446, 202 Etc.

Stainless Steel Butt weld Fittings

Alloy Steel Tubes is India’s one of largest Stainless Steel Pipe Fittings & Flanges manufacturer. We are supplying 304L(NAG)/ 304/ 304L/ 304LN/ 316/ 316L/ 316LN/ 321/ 310S and EN 1.4550 stainless steel to the Atomic Energy/ Nuclear Sector/ power sector.

Type of Stainless Steel Butt weld Fittings

Below are mostly used stainless steel buttweld fittings, click on below links to get dimensions & diagrams of stainless steel buttweld fittings:

Dealer, distributor & stockist of World’s Top 10 Manufacturers of Stainless Steel Buttweld Fittings

DID YOU KNOW?
Currently, there are 440 commercial nuclear reactors in 30 countries, accounting for about 15% of electric power generation in the world. The world’s fleet of nuclear power plants is, on average, more than 20 years old. UK produces almost 330,000 tonnes of stainless steel in a year. Around 213,000* tonnes are used by manufacturers in sectors from nuclear energy.