254 SMO pipe fabrication with pitting and crevice corrosion resistance

316L 1.4401 S31603 Stainless Steel Pipe is a highly versatile and durable pipe option commonly used in a wide range of industrial and commercial applications. This SS UNS S31603 pipe is made from high quality 316L stainless steel with excellent resistance to corrosion, oxidation and staining, making it ideal for harsh environments or high stress applications.

The 316 stainless steel pipe has become an indispensable material for the industrial sector. This alloy of iron and chrome is recognized for its high resistance to corrosion, as well as its durability. 316 stainless steel tubing can be produced in both seamless and welded tubes to meet specific customer needs.

ASTM A312 TP316 is a standard specification for seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipes used in high-temperature and general corrosive service applications. The 316 Seamless Industrial Steel Pipe is made from a combination of chromium, nickel, and molybdenum, which gives SS 316 Seamless Tube excellent resistance to corrosion and rust.

304 Piping Spools are made of 304 Stainless Steel, a common and popular material in many industrial applications that require resistance to corrosion and oxidation. These S30400 Piping Spools are prefabricated using specialized machinery and processes, which ensure that they are highly accurate and reliable.

SMO 254 Pipes can withstand high mechanical stress and Alloy 254 SMO Pipe high pressure work in high temperatures and corrosive environments.

UNS N08367 also commonly referred to as alloy AL6XN is a low carbon, high purity, nitrogen-bearing “super-austenitic” nickel-molybdenum alloy with excellent resistance to chloride pitting and crevice corrosion.

ASME B36.19M is the standard specification for stainless steel pipes, which specifies the dimensions, tolerance, and manufacturing requirements for both welded and seamless pipes.

AL6XN is a superaustenitic stainless steel with outstanding resistance to chloride pitting, crevice corrosion and stress corrosion cracking. AL6XN is a 6 moly alloy that was developed for and is used in highly aggressive environments. It has high nickel (24%), molybdenum (6.3%), nitrogen and chromium contents that give it excellent resistance to chloride stress corrosion cracking, chloride pitting, and exceptional general corrosion resistance. AL6XN is primarily used for its improved pitting and crevice corrosion resistance in chlorides. It is a formable and weldable stainless steel.

seamless stainless steel tube meets ASTM A269 and ASTM A511 standard specificatins. Seamless stainless tube provides a high level of strength and corrosion resistance for applications in harsh industrial environments whether hot or cold. We provide additional custom services such as tube cutting and tube polishing services to meet your specifications. Stainless Steel Seamless TubeStainless Steel Seamless Tube
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.20

Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.
Type “Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size “OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”

SMO 254 ERW piping is commonly used in seawater desalination, flue-gas cleaning, heat exchangers, etc. SMO 254 Welded Pipe is a very high end molybdenum and nitrogen alloyed super austenitic stainless steel with a low carbon content.

The anti-corrosion properties that make 316 steel unique come from the molybdenum in its composition. These properties make 316 the first choice for some specific applications where extreme corrosion resistance is required. Such applications include heavy duty marine projects and industrial applications where steel is often in contact with harsh corrosive substances.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.65

stainless steel has good corrosion resistance, it can make structural members permanently maintain the integrity of engineering design.

Grade 316 pipe bend also has given excellent service in potable water. Pitting and crevice corrosion may occur in waters with higher chloride content, and 2000 ppm is accepted as the upper limit. The higher molybdenum content of 316 make it significantly more corrosion resistant than grade 304.

Stainless steel grade 317L is a low carbon version of grade 317 stainless steel.Our Stainless Steel 317/317L Pipe Elbow are available in several end types, like threads, bevelled ends, bended, seamless, etc. and in different diameters and thicknesses.

The flange is second most used joining method after selding. Flanges are used when joints need dismantling. It provides flexibility for maintenance. Flange connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance in required during plant operation.
A flanged joint is composed of three separate and independent although interrdlated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter. Special controls are required in the selection and application of all there elements to attain a joint, which has acceptable leak tightness.
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term “flange” is also used for a kind of tool used to form flanges.

904L stainless steel combines molybdenum and copper with iron for tremendously increased resistance to reducing acids like sulphuric acid. It stands up extremely well to chlorides in the environment for low pitting and crevice corrosion, as well as stress corrosion cracking.

254SMO made of high concentration of molybdenum, chromium and nitrogen has good resistance to pitting and crevice corrosion. Copper improves corrosion resistance in certain acids. In addition, 254SMO has good stress strength corrosion cracking properties due to its high content of nickel, chromium and molybdenum.

Although chemically similar to 316 grade austenitic stainless steel, 317 alloy has a slightly higher molybdenum content in its alloy. Above 3% molybdenum, the properties of stainless steel 317 sheet and plate are enhanced, making it particularly suitable for applications that cannot be met with 316 alloy.

Applications and Materials
Normalizing is mainly used for normalizing the structure of carbon steel and low alloy steel after forging, hot rolling or casting. The hardness obtained after normalizing depends on the steel dimensional analysis and the cooling rate used (approximately 100-250 HB).

Stainless steel, thanks to its passive chromium oxide coating, does not react with other substances. Thanks to this, it can be freely used in contact with food. Strict HACCP standards require the use of stainless steel in contact with food. All because steel is non-toxic and easy to keep clean. Stainless steel elements can be cleaned with most common detergents and we do not have to worry that the steel surfaces will lose their properties or change their appearance.

Annealing is a specific process of heat treatment that alters the properties of metal. While there are many different types of heat treatment, annealing is popular because it increases ductability and reduces hardness.

321 Stainless Steel (UNS S32100/ASTM A193 B8T) is a very close relative. While 347 stainless steel is stabilized by the addition of niobium and tantalum to resist intergranular corrosion, 321 is stabilized by the addition of titanium. By adding niobium and tantalum, this material prevents the formation of chromium carbides. Since these elements have a stronger affinity for carbon than chromium, niobium-tantalum carbide precipitates within the grains rather than forming at the grain boundaries.

SAE 304 stainless steel is the most common stainless steel. The steel contains both chromium (between 18% and 20%) and nickel (between 8% and 10.5%)[1] metals as the main non-iron constituents. It is an austenitic stainless steel. It is less electrically and thermally conductive than carbon steel. It is magnetic, but less magnetic than steel. It has a higher corrosion resistance than regular steel and is widely used because of the ease in which it is formed into various shapes.[1]

S31803 is the Unified Numbering System (UNS) designation for the original duplex stainless steel. The UNS system was created by multiple trade groups in the 1970s to reduce confusion when the same alloy was called different things, and vice versa. Each metal is represented by a letter followed by five numbers, where the letter represents the metal series, i.e. S for stainless steel.

For paper mill applications requiring lower alloy grades that do not have sufficient corrosion resistance. Based on a 22% chromium content, they have a combined austenitic:ferritic microstructure that provides greater strength, corrosion resistance and cost-effectiveness.

The UNS S31803 (ASTM F51) specification has been largely superseded by UNS S32205 (1.4462, ASTM F60). This reflects their desire to maximize the alloy’s corrosion properties, thanks to the development of the AOD steelmaking process, which allows for tighter control of composition. In addition, it allows to influence the nitrogen addition level rather than just being present as a background element. Therefore, the highest performing duplex grades seek to maximize the content of chromium (Cr), molybdenum (Mo) and nitrogen (N).

When it is given heat treatment, it becomes subjected to the sigma phase precipitations. SS 310S a lower carbon content alloy is used due to its fabrication ease.

SMO 254 Flanges contain larger amounts of chromium in comparison with other steels and thus have good corrosion resistance. SMO 254 Slip-on Flanges contain about 10% of chromium.

Grade 304 Pipe is readily brake or roll formed into a variety of components for application in the industrial, architectural, and transportation fields. Grade 304 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
Type “Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size “OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”

310 and 310s are used in power generation applications; used in gas generator trims, pulverized coal burners and pipe hangers. Sinter plants and cement plants also take advantage of the properties of this stainless steel sheet in burners and burner shrouds, feed, discharge systems and wind boxes.

A flange is a ring of steel (forged, cut from plate, or rolled) designed to connect sections of pipe, or to join pipe to a pressure vessel, valve, pump or other integral flanged assembly. Flanges are joined to each other by bolts, and to the piping system by welding or threading (or loose when stub ends are used). Stainless steel flange simplified as SS flange, it refers to the flanges that made of stainless steel. Common material standards and Grades are ASTM A182 Grade F304/L and F316/L, with pressure ratings from Class 150, 300, 600 etc and to 2500. It used in more industries than carbon steel as stainless steel has better resistant performances on corrosion environment and always provides with a good appearance.

A butt weld pipe fitting is designed to be welded on site at its end(s) to connect pipe(s) together and allow change in direction or pipe diameter, or branching or ending.

This fitting then becomes part of a system for transporting fluids (oil, gas, steam, chemicals, …) in a safe and efficient manner, over short or long distances.

Stainless steels 304 and 304L are also known as stainless steels 1.4301 and 1.307, respectively. Type 304 is the most versatile and versatile stainless steel. It is still sometimes referred to by its old name, 18/8, which is derived from the Type 304’s nominal composition of 18% chromium and 8% nickel.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.37

El tubo SMO 254 esta altamente aleado y tiene una resistencia a la corrosion comparable a los aceros austeniticos de alto rendimiento. La tuberia sin costura SMO 254 no se corroe, oxida ni se moja como el acero normal.

Our complete line of SMO UNS S32760 Plates provides a number of outstanding chemical properties and characteristics like high resistance, Durable finish standards, Toughness etc. However, SMO 254 Plates are produced using brilliant raw materials.

Grade 304 Stainless Steel Pipes are most flexible and commonly used stainless steel grade in the market, Stainless Steel 304 grade is the most commonly used alloy in the industry. Stainless Steel 304 Seamless Pipes is primarily because of advances in steelmaking strategies especially regarding control of nitrogen content.
Type “Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size “OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”

The purpose of preliminary heat treatment: to eliminate some defects in blanks and semi-finished products, and to prepare organization for subsequent cold working and final heat treatment.

Incoloy 926 is also resistant to chloride stress corrosion, with good corrosion resistance in both oxidizing and reducing media.

Alloy 309 (UNS S30900) is an austenitic stainless steel developed for high temperature corrosion resistant applications. The alloy resists oxidation up to 1900¡ãF (1038¡ãC) under non-cycling conditions. Frequent thermal cycling reduces oxidation resistance to approximately 1850¡ãF (1010¡ãC).