China Top stainless steel pipe Supplier

Gnee is a leading ISO certified stainless Pipe supplier, manufacturer, exporter, manufacturer, wholesaler, distributor in China. We offer superior quality stainless steel welded pipe and seamless pipes that are durable, corrosion resistant and manufactured to the highest industry standards. With prompt delivery, expert technical support and competitive pricing, our pipes are available in a variety of grades and sizes and can be customized to your exact requirements. Gnee is your reliable partner to meet your stainless steel pipe needs, welcome to contact us!

Hot Sale Stainless Steel Tube With Large Stock
Stainless Steel Pipes Grade Information
  • 304(UNS S30400,EN 1.4301)
  • 304L(UNS S30403,EN 1.4307)
  • 316(UNS S31600,EN 1.4401)
  • 316L(UNS S31603,EN 1.4404)
  • 317(UNS S31700,EN 1.4449)
  • 317L(UNS S31703,EN 1.4438)
  • 321(UNS S32100,EN 1.4541)
  • 347(UNS S34700,EN 1.4550)
  • 410(UNS S41000,EN 1.4006)
  • 430(UNS S43000,EN 1.4016)
  • 439(UNS S43035,EN 1.4510)
  • 441(UNS S44100,EN 1.4509)
  • 201(UNS S20100,EN 1.4372)
  • 202(UNS S20200,EN 1.4373)
  • 2205(UNS S32205,EN 1.4462)
  • 2507(UNS S32750,EN 1.4410)
  • 904L(UNS N08904,EN 1.4539)
  • 17-4PH(UNS S17400,EN 1.4542)
  • 15-5PH(UNS S15500,EN 1.4545)
  • 13-8PH(UNS S13800,EN 1.4534)
ASTM StandardASTM A312, ASTM A358, ASTM A269, ASTM A376
ASME StandardASME SA312, ASME B36.10M, ASME B36.19M, ASME B31.1, ASME B31.3
ASTM A312This standard specifies the requirements for seamless, welded, and heavily cold worked austenitic stainless steel pipes that are intended for high-temperature and general corrosive service.
ASTM A358This standard provides the requirements for electric-fusion-welded austenitic chromium-nickel stainless steel pipes for high-temperature and corrosive service.
ASTM A269This standard specifies the requirements for seamless and welded austenitic stainless steel tubing for general corrosion-resisting and low- or high-temperature service.
ASTM A376This standard specifies the requirements for seamless austenitic steel pipe for high-temperature central-station service.
More Stainless Steel Pipe information

Gnee factory has the largest inventory of stainless steel pipe at its warehouse in Tianjin, China headquarters. It’s Widely used in oil and gas, the chemical industry, ships, seawater and other fields that require high corrosion resistance, strength and other complex environments.

Standard Types Provided:
  • SUS
  • UNS
  • ASTM
  • JIS
  • SAE
  • AISI
  • BSEN
  • DIN
  • ASME

Stainless Steel Weld Pipe:
Outside Diameter OD: 6 – 304.8 mm
Wall Thickness Range: 0.8 – 12.7 mm
Length: Single, Double Random & Cut Length
Customize: Available

Stainless Steel Seamless Pipe:
Outside Diameter OD: 3.00 – 219.10 mm
Wall Thickness Range: 0.40 – 12.70 mm
Length: Single, Double Random & Cut Length
Customize: Available

Processing Technology:

  • Polishing
  • Surface Coating
  • Pickling
  • Electropolishing
  • Passivation
  • Surface Texturing
  • Heat Treatment
  • Sandblasting
  • Chemical coloring
  • Cutting
  • Bending & Forming
  • Welding
  • Hole Turning And Machining
  • Surface Treatment

Manufacturing Technology:

  • Hot Rolling
  • Welding (ARC Welding, TIG, Laser Welding, Plasma Welding)
  • Cold Drawing
  • Extrusion
  • Cold Rolling
  • Cold Bending
Product NameStainless Steel Tube, Stainless Steel Pipe
TypesStainless steel welded pipe, stainless steel seamless pipe
Surface TreatmentAnnealed/Pickling/Polished/Brushed/Bright/Sand-blasted Finished
Surface FinishedNO.1, NO.2D, NO.2B, BA, HL, 8K, Mirror, or as required
Material200 series, 300 series, 400 series
FormsRound, Square, Rectangle
TechnologyHot Rolled, Cold Rolled
Value Added ServicesCutting
Polishing (Electro & Commercial)
Draw & Expansion as per required Size & Length
Non Destructive
Ultrasonic Testing
Annealed & Pickled Bending
Ends1) Plain
2) Beveled
3) Thread with Coupling or cap
Processing ServiceCutting, bending, stamping, welding
Packaging Stainless Steel Metal PlateExport sea-worthy package
CertificationSGS ISO MTC CE BV
Supply Ability50000KGS
  • Construction and Architecture
  • Oil and Gas Industry
  • Chemical and Petrochemical Industry
  • Seawater and Marine Engineering
  • Pharmaceutical Industry
  • Water and Wastewater Treatment
  • Automotive and Transportation
Why Choose Gnee Stainless Steel pipe Company?

Gnee, as a Chinese stainless steel supplier with 15 years of history, exports to 60+ countries. We provide various shapes of stainless steel, including plates, coils, pipes, bars, and fittings. Gnee is committed to providing comprehensive stainless steel solutions, with excellent after-sales service, we support customization and ensure product quality.

In addition, our stainless steel has been successfully exported to more than 60 countries such as Singapore, Malaysia, The United Arab Emirates, Oman, Turkey, Nigeria, Egypt, Kuwait, Indonesia, Qatar, and Kenya. Many regular customers come to visit our company and factory and make multiple orders.

What‘s The Feature Of Stainless Steel pipe/Tube?

Stainless steel pipes are highly resistant to corrosion and oxidation in various environments. The presence of chromium in stainless steel forms a protective oxide layer on the surface, known as the passive film, which acts as a barrier, preventing corrosion and enhancing durability.

Stainless steel pipes exhibit excellent mechanical strength and durability, making them suitable for demanding applications. They can withstand high pressure, temperature variations, and mechanical stresses while maintaining their structural integrity.

Stainless steel pipes have excellent heat and fire resistance properties. They can withstand high temperatures without deformation or losing their structural integrity, making them suitable for applications involving heat transfer and fire protection systems.

Stainless steel pipes can handle high-pressure fluid or gas transportation and are resistant to temperature extremes. They are commonly used in industries such as oil and gas, chemical processing, and power generation, where reliable performance under demanding conditions is crucial.

What Services Does Gnee Provide?

Gnee can provide the following measurement services for stainless steel:

Dimensional Measurement: Measure dimensional parameters such as length, width and thickness by measuring instruments to ensure that the stainless steel is qualified and meets the design requirements.
Surface Measurement: Measure parameters such as flatness, bumpiness and surface roughness of the stainless steel surface to help ensure that the quality and surface condition of the stainless steel meets the requirements.
Thickness Measurement: Use thickness gauges to accurately measure the thickness of the stainless steel to ensure it meets the design requirements.
Material Measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the stainless steel to ensure that the quality and properties of the stainless steel meet the requirements.
Bending And Deformation Measurements: Use tools such as bending gauges and displacement sensors to measure and monitor the degree of bending and deformation of stainless steel to ensure that it is within the allowable range.

Ask Measurement service

Gnee can customize the size and shape of your stainless steel for your specific project needs. Custom design of stainless steel is carried out by a team of professional engineers and designers. Based on the project requirements and constraints, they will use calculation and simulation tools combined with experience and technical knowledge to optimize the stainless steel design to meet the specific needs of your different projects

● Adjustment of the thickness, width and length of stainless steel based on load calculations and strength requirements for structural design.
● The shape of the stainless steel can be designed according to the demand characteristics.
● If the convenience of installation and maintenance is considered, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

Ask Customized Services

Sourcing Gnee stainless steel can provide the following further processing services. We can customize to meet the specific needs of our customers for different projects.

Cutting Service: Stainless steel can be custom cut to obtain the desired shape and size according to the customer’s needs. For example, flame cutting, plasma cutting, laser cutting, etc., can cut stainless steel into desired plates, blocks, shaped pieces, etc.
Bending & Forming: Stainless steel is bent and formed by applying stress and appropriate processes to obtain the desired shape.
Welding Services: Stainless steel can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Hole Turning And Machining: Stainless steel is turned and holes are machined through the use of machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface Treatments: Surface treatments can be applied to improve the corrosion resistance and aesthetics of the stainless steel. This includes methods such as painting, hot dip galvanizing, and electroplating to add a protective layer and provide corrosion resistance.

Ask Deep Processing Services

Gnee stainless steel can provide testing and the following third-party inspection services. These third-party testing services provide independent and objective verification of stainless steel’s compliance with relevant standards and regulations.

Mechanical Property Testing: Used to determine whether the strength, toughness, ductility and other mechanical properties of stainless steel meet the specified requirements.
Chemical Composition Analysis: Quantitative determination of elements on stainless steel samples through spectral analysis, atomic absorption spectroscopy, inductive coupling and other technologies.
Corrosion Performance Test: Common corrosion performance test methods include salt spray corrosion test, acid-base corrosion test and electrochemical corrosion test.
Tensile Strength Test: Through the tensile test, the parameters such as yield strength, tensile strength and breaking strength of stainless steel during the tensile process are measured.
Non-Destructive Testing: Non-destructive testing is used to evaluate hidden defects, cracks and looseness in stainless steel materials. Common methods include ultrasonic testing, magnetic particle testing, eddy current testing, and radiographic testing.
Pressure Test: By exposing stainless steel products to a specific pressure, it is tested whether there are problems such as leakage or deformation to ensure that its pressure resistance meets the requirements.
Surface Quality Test: Used to evaluate the surface flatness, smoothness and oxide layer of stainless steel products.
Welding Performance Test: Check the appearance, mechanical properties and metallographic microstructure of the weld to ensure that the quality of the stainless steel welded joint meets the requirements.
Metallographic Inspection: Through metallographic inspection, the structure, grain size, non-metallic inclusions, etc. of stainless steel are checked to evaluate its quality and performance.

Ask Testing Services
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