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GNEE is a professional supplier of austenitic stainless steel, super austenitic stainless steel, duplex steel, super duplex steel and other materials. The product implementation standards include: national standard, American standard, Japanese standard, German standard, European standard, Russian standard, etc. At the same time, non-standard products can be customized according to customer requirements.

304 304L Stainless Steel Round Tube
Name:304 304L stainless steel pipe. Type:Seamless/welding. Technique:Cold rolled/Hot rolled. Material:Stainless Steel. Surface Treatment:Polished,2b, Ba, No.1, No.4, Hl, 8K, etc. Section Shape:Round.
316 316L Stainless Steel Round Tube
Name:316 316L 1.4401 1.4404 Tube. Type:Seamless/welding. Technique:Cold rolled/Hot rolled. Material:Stainless Steel. Surface Treatment:Polished,2b, Ba, No.1, No.4, Hl, 8K, etc. Section Shape:Round.
310 310S Stainless Steel Round Tube
Name:310 310S stainless steel pipe. Type:Seamless/welding. Technique:Cold rolled/Hot rolled. Material:Stainless Steel. Surface Treatment:Polished,2b, Ba, No.1, No.4, Hl, 8K, etc. Section Shape:Round.
Duplex 2205 Stainless Steel Round Tube
Name: 2205 uns s32205/s31803 stainless steel round tube . Type:Seamless/welding. Technique:Cold rolled/Hot rolled. Material:Stainless Steel. Surface Treatment:Polished,2b, Ba, No.1, No.4, Hl, 8K,
ASTM A790 UNS S32750 Super Duplex Steel Pipe For Oil And Gas
Name: UNS S32750 Super Duplex Steel Pipe . Shape：round. Technique：Cold Rolled. Surface Treatment：Sanded /Mirror/Hairline Brushed. Thickness：0.3-30mm. out Diameter：8-219mm. Length：5.8/6m or Custom.
TP904L Stainless Steel Seamless Pipe
Name：ASTM A213 UNS N08904 Stainless Steel Seamless Pipe. Shape：round. Technique：Cold Rolled. Surface Treatment：Sanded /Mirror/Hairline Brushed. Thickness：0.3-30mm. out Diameter：8-219mm.
AISI 304 Stainless Steel Cold-rolled Sheet
Name: AISI 304 1.4301 SUS304 Stainless Steel Sheet Plate. Technique：Cold Rolled. Specification:0.5-3.0mm. Surface Treatment：Mirror, Golden Mirror, Hairline, No.4 Satin etc.. Certificates：SGS, TUV and
316 316L 2b Stainless Steel Plate
Name: AISI 316 AISI 316L 1.4401 1.4404 Stainless Steel Plate. Technique：Hot /Cold Rolled. Specification:0.5-3.0mm. Surface Treatment：Mirror, Golden Mirror, Hairline, No.4 Satin etc..
AISI 430 Stainless Steel Cold Rolled Coil
Name：430 stainless steel coil. Surface Technology：No.1 2b, N0.4, Hl, Ba, 8K, Etched, Brushed etc.. Rolling Technique：Hot Rooled and Cold Rolled. Transport Package:Sea-Worth Package. Transport
309 309S Stainless Steel Round Tube
Name:309 309S Stainless Steel Round Tube. Type:Seamless/welding. Technique:Cold rolled/Hot rolled. Material:Stainless Steel. Surface Treatment:Polished,2b, Ba, No.1, No.4, Hl, 8K, etc. Section
Stainless Steel Welding Processing
Stainless steel welding is a critical process in manufacturing pressure vessels, pipelines, kitchen equipment, medical devices, and structural components. GNEE offers advanced welding services with
Stainless Steel Cutting
Stainless steel cutting is a core processing step widely used in construction, equipment manufacturing, energy, food processing, and custom fabrication. GNEE offers precision cutting services for

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Why Choose Us?

Our factory

At present, the total investment is RMB 30 million, the plant area is more than 35,000 square meters, and the number of employees is more than 200 and exports 5 million tons of steel products and accessories to overseas customers each year, with annual sales exceeding US$800 million.

Our certifications

GNEE Group has passed SGS certification and has successively obtained ISO9001, ISO14001, ISO45001 system certification, ensuring that all steel pipes and accessories meet quality requirements.

Sales market

It has exported steel pipes to more than 150 countries and regions including the United States, Mexico, Venezuela, Kuwait, Colombia, Turkey, Italy, Brazil, France, Iran, Russia, Vietnam, etc.,

Our products

Its main products include stainless steel pipes, stainless steel plates, stainless steel coils, stainless steel bars and stainless steel pipe fittings, etc., with competitive quality and price.

Types of Stainless Steel Welding Processing：

Stainless Steel Coil With 200 Series Material

Prime Quality Customized 304 304L Stainless Steel Coil Price

TIG welding (GTAW)

TIG welding is widely used in the fabrication sector for stainless steel since it has a stable arc and the process is automated. In the TIG process, the heat applied to the weld can precisely be controlled through a foot pedal or finger control, minimising the possibility of warping. TIG welding machines can also switch between AC and DC polarities, offering flexibility and convenience simultaneously.

MIG welding (GMAW)

MIG welding is another popular choice for welding stainless steel. It offers faster speeds than TIG welding mainly thanks to its continuously fed electrode. One downside of this technique is that it doesn’t look as pleasing to the eye as properly executed TIG welds.

A Teflon wire liner in the MIG gun allows for a consistent wire feed to the weld pool and added protection from contamination. Backstepping, staggering or allowing the joint to undergo a bit of the cooling process helps avoid warpage since stainless steel retains heat well.

Shielded metal arc welding (SMAW)

Stick-welding stainless steel is often the practical choice regarding cost, portability and simplicity. SMAW can be performed in almost any environment and thus is great for various repair jobs and welding stainless steel outdoors.

Thicker pieces of stainless steel (above 2mm) are most suitable for SMAW since it is harder to control the heat input than with other methods. Selecting the electrode (typical grades: 316, 308, or 312) is an important part of the project. Beware of slag removal after the welding as it might be a bit of a struggle.

Flux cored arc welding (FCAW)

Flux-cored arc welding stainless steel is sometimes preferred over SMAW since it generally creates a more uniform weld bead. FCAW can be performed with a shielding gas when working with varying material thicknesses or in demanding welding conditions.

A 10° drag angle allows the flux to rise at the weld pool and gives enough bead coverage.

Resistance welding

Resistance welding (spot welding, seam welding) stainless steel creates clean welds compared to arc welding processes since it doesn’t use filler material and has no risk of weld spatter. The high electrical resistance of stainless steel is also favorable since it can complete a weld in a short amount of time.

A good quality welder with sufficient power output is necessary for resistance welding stainless steel to prevent the areas close to the HAZ from deformities. It is recommended to have higher current and voltage values when welding stainless steels compared to, for example, copper and aluminium alloys due to the difference in electrical conductivity.

Friction welding

Friction welding stainless steel, similar to resistance welding, doesn’t use consumables, making it an economical choice when the part geometries allow for it. It is most suitable for welding austenitic stainless steel due to its composition of chromium (16-26%) and nickel (8-22%).

Some factors that need to be considered are friction pressure, burn-off length and rotational speed. Some sub-types of friction welding may be suitable for specific applications: friction hydro pillar processing (FHPP), friction stir welding (FSW) and friction plunge welding.

Applications of Stainless Steel Welding Processing：

Food processing and handling:

Stainless steel’s hygienic properties make it perfect for food processing equipment, tanks, piping, and utensils. Welding ensures smooth, crevice-free joints that prevent bacterial contamination and facilitate easy cleaning.

Medical and pharmaceutical:

Surgical instruments, implants, and medical equipment require precise and sterile welds. Stainless steel’s biocompatibility and corrosion resistance make it an excellent choice for these applications.

Architecture and construction:

Stainless steel is used for structural components, facades, railings, and decorative elements in buildings. Welding provides strong and visually appealing joints that can withstand weather and environmental exposure.

Automotive and transportation:

Exhaust systems, fuel tanks, and other components in cars, trucks, and trains are often made of stainless steel. Welding ensures leak-proof joints and structural integrity.

Chemical processing:

Reactors, storage tanks, piping, and other equipment used in chemical processing industries rely on stainless steel’s corrosion resistance. Welding creates strong and reliable joints that can withstand harsh chemicals and high temperatures.

Oil and gas industry:

Offshore platforms, pipelines, and refinery equipment utilize stainless steel for its strength and corrosion resistance in harsh environments. Welding ensures the integrity of these critical structures.

Kitchen and appliances:

Sinks, countertops, appliances, and cookware are often made of stainless steel for its durability and easy cleaning. Welding is used to create seamless joints and ensure a hygienic surface.

Consumer goods:

Bicycles, cutlery, jewelry, and other consumer products are made of stainless steel for its aesthetic appeal and resistance to wear and tear. Welding is used to join components and create intricate designs.

Energy production:

Nuclear power plants, solar panels, and wind turbines utilize stainless steel for various components. Welding ensures reliable connections and structural integrity in demanding environments.

Marine applications:

Stainless steel is used for boat hulls, propellers, and other marine components due to its resistance to saltwater corrosion. Welding creates strong and watertight joints.

We Specialize In Welding A Wide Range Of Stainless Steel Types:：

Type	Typical Grades
Austenitic	304 / 1.4301, 304L / 1.4307, 316L / 1.4404, 321 / 1.4541
Ferritic	430 / 1.4016, 441 / 1.4509
Duplex / Super Duplex	2205 / 1.4462, 2507
High-alloy & special steels	904L / 1.4539, 310S / 1.4845, Inconel, Hastelloy (on request)

Processing Highlights：

Item	Specification Description
Thickness Range	0.5 mm – 50 mm
Joint Types	Butt, lap, T-joint, corner, edge
Automation	CNC welding stations for high-efficiency batch production
Weld Inspection	Visual inspection + optional dye penetrant, X-ray, or ultrasonic tests
Post-processing	Pickling & passivation, polishing, surface finishing

Different Types of Stainless Steel Sheet Bending：

V bending. This is the most common bending process and is named so because of the V-shaped punch and die used in the process. The punch presses the metal sheet into the lower die, resulting in a V-shaped workpiece.

Bottoming. The Upper punch completely presses the metal sheet into the Lower die, so the angle of the mold determines the final angle of the workpiece. Bottoming can reduce sheet rebound and provide good accuracy.

Air bending. Air bending provides greater flexibility, helping you achieve results between 90 and 180 degrees with multiple bends as adjustments. Of course, its accuracy will be lower than Bottoming’s.

Coining. Coining has been popular in the past, but with the development of CNC Press Brake, its application has gradually decreased.

U bending. U bending is similar to V bending in that it also uses the Upper punch to press down on the Lower die. But its shape is U-shaped and is mostly used for manufacturing U-shaped channel steel.

Step bending. Step bending is the multi-V bending, which can make the workpiece bend a large radius, but also can perform several small V bending in succession.

Roll bending. This process is used for bending workpieces with large curls and involves the use of three rolls driven by a hydraulic system to bend the sheet. For example, it allows the sheet to be bent into tubes and cones. If necessary, large radius bending can also be manufactured, which can be rolled once or multiple times simultaneously.

Wipe Bending. This method is similar to edge bending, namely bending the edge of sheet metal, and the width bending tool also determines the inner radius of the bending. The plate is placed on the lower die and pressure is applied to the protruding metal by a pressure pad and punch, resulting in bending.

Edge bending. This method involves the use of upper and lower molds that move up and down for bending. It’s usually used for shorter stainless steel plates to reduce sharpness and prevent damage to the bending edge.

Rotary bending. This method can bend the workpiece with a degree of more than 90. The final profile is similar to a V-bend, but the profile surface is smoother.

Application of Stainless Steel Sheet Bending：

Automotive industry :

In automotive manufacturing, bending is used to create various components, including chassis parts, brackets, and exhaust systems. The ability to bend sheet metal with precision is crucial for maintaining vehicle safety and performance.

Aerospace industry :

Aerospace manufacturers rely on sheet metal bending for the production of aircraft components, such as wing sections and fuselage panels. The lightweight, high-strength properties of bent sheet metal are invaluable in this sector.

Construction and architecture :

Architectural designs often require complex, aesthetically pleasing shapes that can be achieved through sheet metal bending. Bending also enhances the structural integrity of building components.

Electronics and appliances :

Sheet metal bending is instrumental in the production of electronics enclosures, kitchen appliances, and hvac systems. It allows for the creation of custom shapes that fit seamlessly into the final products.

Package And Shiping:

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FAQ

Q: Could you give me your best price?

A: Of course yes, we are a professional manufacturer, so we could supply the best price without many middlemen.

Q: If my quantity is very small, could you do my products?

A: Yes, we can. Do not worry about the quantity. We will provide different production ways based on your quantity.

Q: How long would the delivery time?

A: It is based on all of your requirements about the products.

Q: How can you guarantee the quality?

A: We have a powerful QC team to control the quality in every production process. We believe the best quality is our enterprise life.

That’s why we have lots of big group companies.

Q: I want to buy your products, how can I make the payment?

A: We can accept the T/T, LC and Western Union.

Q: I didn’t find the products I want, can you OEM for me?

A: Yes, we are a professional OEM and ODM manufacturer with more years’ experiences. We can OEM and ODM the products which you need.

We're professional business manufacturers and suppliers in China, specialized in providing high quality customized service. Be free to wholesale business in stock here and get free sample from our factory. For price consultation, contact us.

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