The exhibition of Zhengzhou Huitong forged flange 316 flange

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.

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.

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.

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.

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

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.

The material has 19% chromium, 17% nickel, 6% molybdenum with carbon, manganese, silicon, copper, sulfur and sulfur in it.

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.

Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.

Alloy 904L is a non-stabilized, high alloy austenitic stainless steel with low carbon content.

After tension testing and three-dimensional vibration test, the tearing of the sewn stainless steel pipe occurs almost far away from the welding point or the heated area. This is because the weld less impurities and nitrogen content is slightly higher, so the strength of the weld better than other parts.
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.”

These are stainless steel washers with high oxidation resistance. Stainless steel 316Ti gaskets are commonly found in areas where oxidation is avoided, including furnaces, paper mill equipment, heat treatment, and more. These applications typically expose gaskets to acetic and citric acids, sulfur dioxide and ammonia to resist corrosion. The stainless steel 316Ti split gasket is designed for higher temperatures because it has a lower carbon content to prevent embrittlement.

Stainless steel 316 flanges are composed of a chrome-nickel-molybdenum alloy and are typically used in conditions prone to chloride ion corrosion. The addition of molybdenum makes the material resistant to corrosion, especially in chloride-rich environments. 316L stainless steel flanges are the standard molybdenum grade, second only to 304 in austenitic stainless steels.

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.

Stainless Steel is recognised as
the premium material for marine
applications, with excellent corrosion
resistance, strength and hardness.
Because 316L stainless resists rusting,
it makes an excellent choice for
architectural applications in aggressive
environments such as industrial and seafront buildings, wharves and piers.
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.”

For 304L stainless steel pipe, the range of carbon content in the steel affects the corrosion resistance of the tank. During the welding of steel, a phenomenon called “chromium carbide precipitation” occurs at temperatures between 800 and 1500¡ãF (425 and 815¡ãC). Chromium combines with carbon in the heat affected zone and precipitates as chromium carbide at grain boundaries. As a result, it significantly reduces the corrosion resistance of the steel in this area. Due to the lower carbon content of 304L steel, the risk of chromium carbide precipitation is greatly reduced.
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.”

Stainless Steel 304L Flanges are made up of the basic 18-8 stainless steel material that has 18% chromium, 8% nickel, carbon, silicon, sulfur, manganese and phosphorus in the composition. The material has good strength and low corrosion resistance. The 304L Stainless Steel Slip on Flanges are made under different specifications and dimensions according to different standards.

For example, material 304 has absolutely excellent corrosion resistance in a dry and clean atmosphere, but it is moved to the seaside area and will soon rust in sea fog containing a large amount of salt. Therefore, it is not any kind of stainless steel that can resist corrosion and rust at any time.
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.”

ASTM A815 UNS S32760 fittings is the one where the strength is excellent and the corrosion resistance is excellent.The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products.

ASTM A403 WP304 Fittings are buttweld fittings made for austenitic stainless steel applications with forged material.

Type 304 is slightly less strong than 302 due to its lower carbon content. Type 304 is widely used in welding applications because the low carbon allows some exposure to carbide precipitation in the 800¡ãF – 1500¡ãF range without the need for post annealing operations.
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 B36.34

Due to their similarity to 316, these ASME SA 276 stainless steel TP316Ti grades can be used at elevated temperatures. Also recognized as a WR 1.4571 grade rod, it maintains the same physical and mechanical properties as standard grade stainless steel 316. It exhibits excellent resistance to various environments and temperatures, as well as to corrosion and oxidation over time. Stainless steel 316Ti bolts are typically used in areas that can withstand higher temperatures than Type 304, and their low carbon makes them resistant to carbon precipitation.

Duplex Steel DIN 1.4462 Socket Weld Flanges demonstrate good fatigue strength, as well as outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe environments. As a referred stockholder we have huge inventory of Duplex Steel ASTM A182 Flanges include Duplex Steel S31803 Weld Neck Flanges

Stainless steel pipes have good intergranular corrosion resistance, excellent corrosion resistance and cold working and stamping properties, and can be used as heat-resistant stainless steel. At the same time, the mechanical properties of the steel are still good at -180¡æ. In the solid solution state, the plasticity, toughness and cold workability of steel have corrosion resistance in oxidizing acid, atmosphere, water and other media. Therefore, 304 stainless steel is the steel with the largest output and usage and the most widely used steel.
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 B36.21

Grade 310S Stainless Steel Butt Weld Pipe Fitting contains low Carbon, with higher Nickel and Chromium content curbing Hydrogen sulphide attack, which used in various industries like heat exchangers, furnace parts, shipbuilding, heat treatment baskets, condensers, offshore etc.
The fittings are shaped up and then heated to a high temperature following a rapid cooling closer to the cooling in still air. This rapid cooling adds to the strength of the Stainless Steel 310 Pipe Fittings and makes them much stronger. The SS 310S Fitting is used in industries like the sea water processing, thermal energy generation plants and much domestic piping as well. 310S SS Weld Fittings is used in different pressure classes to cope up with the pressure containment requirement of the application as well.

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.

These stainless steel 316L threaded flanges perform well in fresh water service even with high chloride levels.

Alloy 304 Studs (Din 1.4301 Studs) Stainless Steel UNS S30400 Studs are commonly used in the brewing industry such as pipes, fermenters, yeast trays, railway vehicles and warehouses. Due to the high work hardening rate of these alloy 304 studs, intermediate annealing may be required to successfully manufacture the part. These annealed grade 304 studs have better heat and corrosion resistance than Type 301 and 302 stainless steels, they are not very conductive or thermally conductive, and are non-magnetic.

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).

While 300 series stainless steels are very popular, they are not universally suitable for all process piping applications. For example, even though they are corrosion resistant, 300 series formulations do not perform well in the presence of chlorides. In these cases, steels with much higher alloy contents such as molybdenum, chromium and nickel are preferred.

AL-6XN alloy is easy to weld using similar parameters as Type 316L stainless steel, including travel speed (IPM) and weld current. It is common to use a weld insert ring for additional alloying when orbital or manual welding in the field.

The high strength and corrosion resistance of the AL-6XN alloy make it a better choice than the conventional duplex stainless steels and a cost effective alternative to more expensive nickel-base alloys where excellent formability, weldability, strength and corrosion resistance are essential.

It is common practice for 304L to be dual certified as 304 and 304L. The low carbon chemistry of 304L combined with an addition of nitrogen enables 304L to meet the mechanical properties of 304.

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.

We manufacture Stainless steel 304/ 304L pipe fittings for end-users such as marine engineering, chemical processing, hydro-carbon processing, heat exchangers, valves and pumps. and ship worldwide.

Alloy steel A182 F5 grade WNRF flanges have welded necks for added strength and grip. These can be used under high pressure gas and liquid flows as they are leak proof. They can also be used at very high and very low temperatures, as the welded neck can greatly reduce leakage. Raised faces provide great grip for bolting or welding.