254 SMO pipe fabrication with pitting and crevice corrosion resistance

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.

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.

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.

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.

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.

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.

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.

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

310S stainless steel is the lower carbon version of 310 plate which is less prone to embrittlement and sensitization in service. 310H stainless steel plate is the high carbon version.

Stainless Steel 904L Slip On Flanges
Featuring 304 stainless steel for very good corrosion resistance, this GRAINGER APPROVED weld neck flange can be attached to a system via a circumferential weld at the neck. The welded area can be easily examined by radiography. Matched pipe and flange bore reduces turbulence and erosion inside the pipeline. Flange is excellent for use in your critical applications and is ideal for use with air, water, oil, natural gas, and steam.

Stainless Steel ASTM A182 347 Flanges
Featuring 304 stainless steel for very good corrosion resistance, this GRAINGER APPROVED weld neck flange can be attached to a system via a circumferential weld at the neck. The welded area can be easily examined by radiography. Matched pipe and flange bore reduces turbulence and erosion inside the pipeline. Flange is excellent for use in your critical applications and is ideal for use with air, water, oil, natural gas, and steam.

The Stainless Steel 304 Seamless Pipe nominal bore size ranges from ? inches to 16 inches, the ERW pipes range from ? inches to 24 inches and the EFW pipes range from 6 inches to 100 inches. The sizes of all pipes range from 1/8 inches to 30 inches. The Stainless Steel 304 Welded Pipe is welded from a narrow piece of sheet or a strip. The seamless, welded or LSAW pipes vary in form as round, square, rectangular and hydraulic types.
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 Inconel alloy pipes produced are tested for several mechanical properties like tensile and yield strength, elongation along with both non-destructive electric and hydrostatic tests. These hot finished or cold worked alloy pipes are well suited for use in applications that demand the need for general corrosion resistance properties. Regular welded pipes are susceptible to intergranular corrosion.

Alloy 347 stainless steel plate cannot be hardened by heat treatment, only by cold working.

In order to convey the pipeline, it is necessary to remove the straight hose in the pipeline. When using various pipelines, various pipelines must be used. When the pipeline is used, the elbow must be used to change the size of the pipeline. When bifurcating, the three-way pipe The flange connection used when the joint is used with various pipe joints, in order to reach the long-distance transmission pipeline, in order to reach the thermal expansion and cold contraction joint or effective connection aging of the pipeline, the long-distance expansion and cold contraction joint is used for the connection of the pipeline. , In the connection of various instruments, there are also the connectors and plugs of the instrument phase.

While 316 is not completely rust-proof, the alloy is more corrosion-resistant than other common stainless steels. Surgical steel is made from subtypes of 316 stainless steel.

Grade 304 / 304L stainless steel has a minimum of 18% chromium and 8% nickel. The only difference between them is the carbon content. Type 304 has a maximum carbon of 0.07% .Type 304L has maximum carbon of 0.030 %. This range of carbon in the steels affects the corrosion resistance. 304 / 304L is available in sheet, sheet coil, plate, plate coil, round bar, processed flat bar and tubular products for further manufacturing.

Stainless steel needs to be cold worked to generate higher tensile strength. Type 304 has slightly lower strength than 302 due to its lower carbon content. Stainless Steel 304 Pipes and Tubes Available are following Specification, Grades and Size.
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

A typical AL-6XN weld has non-uniform freeze lines and oxide islands in the weld bead. These oxide islands appear as a thin film, having a varying color with tints from gray to dark brown that adhere to the surface.

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 steel tee is also a kind of pipe fittings, generally there are two kinds. That is, an equal tee, the diameter of the three ends is the same; a reducing tee, the diameter of the branch pipe is different from the other two.

Stainless Steel 304 Sheet is made up of an austenitic stainless steel that has 18% chromium and 8% nickel in the composition. This is the most used grade of all stainless steels in the world.

The fertilizer and chemical processing industry use 310 310S Stainless Steel Flanges for mild cyclic operations. Furnaces, power generation and thermal processing industries function at extremely high temperatures, thus requiring flanges that are tough at such temperatures.

Steel flanges provide an easy access for cleaning, inspection or modification. They usually come in round shapes but they can also come in square and rectangular forms. The flanges are joined to each other by bolting and joined to the piping system by welding or threading and are designed to the specific pressure ratings; 150lb, 300lb, 400lb, 600lb, 900lb, 1500lb and 2500lb.

A flange can be a plate for covering or closing the end of a pipe. This is called a blind flange. Thus, flanges are considered to be internal components which are used to support mechanical parts.

316 stainless steel is a popular alloy that contains molybdenum. Unlike the most common stainless steel, 304 steel, it is more resistant to chlorides and other acids. This makes it ideal for outdoor applications in marine environments or applications that may be exposed to chlorides.
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 Stainless Steel 304 Sheet also has manganese, carbon, silicon, sulfur, nitrogen and phosphorus in the composition. The material is strong and has 205MPa minimum yield strength and 515MPa minimum tensile strength in general.

316 Stainless Steel’s resistance to corrosion and contamination, low maintenance, and a familiar luster make stainless steel an ideal material for many applications that require the strength and corrosion resistance of steel. In addition, stainless steel can be rolled into sheet, plate, bar, wire and tube. These can be used in cookware, tableware, surgical instruments, major appliances, vehicles, construction materials in large buildings, industrial equipment (eg, paper mills, chemical plants, water treatment), and storage tanks and tankers for chemicals and food.
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 B36.49

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.

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.

The benefits of Type 316L stainless steel include low carbon content that eliminates carbon deposits during welding and can be used in severely corrosive environments.

ASTM 182 is use in pressure systems, Included are flanges, fittings and similar parts to specified dimensions or to dimensional standards, such as the ASME specifications.

904L washers are made of a non-stabilized low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. It is also highly resistant to chloride attack ¨C both pitting / crevice corrosion and stress corrosion cracking. This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures. Due to its intrinsic anti-corrosive properties, 904L can be made into bolts, nuts, washers, studs, socket head cap screws, as well as a wide variety of other fasteners.

ASTM A403 WP321 pipe fittings mean the pipe fitting which material is Wrought Austenitic Stainless,they are used for the pressure piping systems of moderate and high temperature services.

The austenitic structure of 316 stainless steel provides excellent toughness even at low temperatures.

Application requiring a combination of high strength and corrosion resistance may consider Incoloy 925 Weld Neck Flanges. All should be done to minimize work hardening of Incoloy 925 Socket Weld Flanges, but can be minimized by reducing the machining speeds and/or the depth of cut.

The solution treatment temperature of 304/304L stainless steel pipe is 1080-1100¡æ, water cooling or air cooling. The intermediate annealing temperature of cold working is 850-970 ¡ã C, and water cooling after a certain period of time. The steel structure is austenite after solution treatment, and sometimes there is a small amount of ferrite.
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 B36.23

AL-6XN is an upgrade to 300 series alloys such as 316L/1.4435 and 304 when high concentration of chlorides, high temperature, acidic pH levels, and time of contact are introduced to the process.

304 stainless steel has excellent resistance to a wide range of atmospheric environments and many corrosive media. It will experience pitting and crevice corrosion in warm chloride environments, and stress corrosion cracking above about 60 ¡ãC. It is considered to be resistant to pitting corrosion in water up to about 400 mg/L chloride at ambient temperature, decreasing to about 150 mg/L at 60 ¡ãC.
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 B36.29