Stainless Steel Pipes

Seamless Pipes Size: OD: 1/8 Inch - 32 Inch,DN6mm - DN800mm.
Wall Thickness: 0.5-100mm,Sch10, 10s, 40, 40s, 80, 80s, 120, 160 or Customized.
Welded Pipes Size: OD: 1/8 Inch - 80 Inch, DN6mm - DN2000mm.
Wall Thickness: 0.3-45mm, Sch10, 10s, 40, 40s, 80, 80s, 120, 160 or Customized.
Length: Single Random, Double Random & Cut Length.
End: Plain End, Beveled End.
Surface: Annealed and Pickled,Bright Annealed,Polished,Mill Finish,2B Finish,No. 4 Finish, No. 8 Mirror Finish,Brushed Finish,Satiny Finish,Matte Finish.
Seamless Standards: ASTM A213, ASTM A269, ASTM A312, ASTM A358, ASTM 813/DIN/GB/JIS/AISI etc...
Steel Grades: 304, 304L, 310/S, 310H, 316, 316L, TP310S,321, 321H,904L,S31803 etc...
Welded Standards: ASTM A249,A269,A270,A312,A358,A409,A554,A789,/DIN/GB/JIS/AISI etc...
Steel Grades: 304, 304L, 310/S, 310H, 316, 316L, TP310S,321, 321H,904L,S31803 etc...
Delivery time: Within 5-25 days depends onorder quantity,Regular items available with stocks.

Stainless steel pipes/tubes are a vital component in modern industrial applications, renowned for their exceptional durability, corrosion resistance, and seamless construction. Comprising a unique alloy of iron, chromium, and other elements like nickel and molybdenum, these pipes exhibit unparalleled strength and longevity.

The Stainless Steel Pipes/Tubes produced by Womic holds Nine Major Classification Society Certifications, including CCS, ABS, BV, DNV, LR, NK, KR, RINA, and RS, demonstrating our strong capability to meet the most stringent international standards in marine and offshore applications.

The seamless Stainless Steel Pipesmanufacturing process involves extruding solid billets of steel to form hollow tubes without any welded joints. This construction method eliminates potential weak points and enhances structural integrity, making stainless seamless steel pipes highly reliable for various applications.

Stainless steel welded pipes are integral components in a wide range of industries due to their durability, corrosion resistance, and versatility. These pipes are fabricated through a welding process, joining stainless steel sheets or strips to form cylindrical tubes. Here's a comprehensive overview of stainless steel welded pipes.

Advantages of Stainless Steel Pipes/Tubes by Womic:

Corrosion Resistance: Resistant to a wide range of corrosive media and environments.

Strength: High mechanical strength ensures structural integrity.

Versatility: Available in various sizes, grades, and finishes to suit different applications.

Hygiene: Well-suited for industries with stringent sanitary requirements.

Longevity: Exhibits exceptional durability, resulting in extended service life.

In summary, stainless steelpipes are essential components across industries, providing durability, corrosion resistance, and versatility for a variety of applications. Proper selection of grade, manufacturing method, and adherence to industry standards are critical for ensuring optimal performance and safety of the welded pipe systems.

Hot Rolling (Extruded Seamless Steel Pipe) Process:

Round tube billet→heating→perforation→three-roller cross-rolling, continuous rolling or extrusion→tube removal→sizing (or reducing diameter)→cooling→straightening→hydraulic test (Or flaw detection)→mark→storage

Cold Drawn (Rolled) Seamless Steel Tube Process:

Round tube billet→heating→perforation→heading→annealing→pickling→oiling (copper plating)→multi-pass cold drawing (cold rolling)→billet→heat treatment→straightening→Hydraulic test (flaw detection)→Marking→Storage.

Electric Fusion Welding (EFW): In this process, a longitudinal seam is welded by applying electrical energy to the welding arc.

Submerged Arc Welding (SAW): Here, the weld is made by melting the edges with a continuous arc submerged in flux.

High-Frequency Induction (HFI) Welding: This method employs high-frequency currents to create a weld seam in a continuous process.

1. Austenitic Stainless Steel Tubes

Applicable Standards:

ASTM A312 / ASME SA-312 (Seamless/Welded Austenitic Stainless Steel Pipes)

ASTM A213 / A269 / A249 (Heat Exchanger & General Purpose Tubing)

EN 10216-5 / EN 10217-7 (European Pressure/Structural Tubes)

OST “08X18H10” series, “12Kh18N10T”, etc

Common Grades: 304 / 304L / 316 / 316L / 321 / 347 / 310S / 317L / 904L / 254 SMO

Dimensional Range (Typical):

OD: 6.35 mm (1/8”) to 760 mm (30”)

Wall Thickness: SCH 5S–SCH XXS or as per ASTM tables

Length: Up to 12 m (or customized)

2. Duplex Stainless Steel Tubes

Applicable Standards:

ASTM A789 / A790 / A928 (Duplex and Super Duplex Stainless Steel Tubes)

EN 10216-5 / EN 10217-7 (European Standards)

Common Grades: UNS S31803 / S32205 (Duplex 2205), UNS S32750 / S32760 (Super Duplex 2507), 1.4462 / 1.4410

Dimensional Range (Typical):

OD: 10.3 mm to 1219 mm (up to 24”)

Wall Thickness: 1.2 mm to 60 mm (depending on size)

Length: Up to 12 m (customized available)

Duplex offers higher strength + better chloride SCC resistance than standard austenitic grades

Super duplex (e.g. 2507) extends corrosion resistance further at the cost of higher alloying

3. Nickel Alloy Tubes

Applicable Standards:

ASTM B163 / B165 / B167 / B622 / B626 / B444 (Nickel & Nickel Alloy Tubes)

Common Grades: Inconel 600 / 625 / 718, Hastelloy C276 / B2 / G30, Monel 400 / K500, Incoloy 800 / 825, Alloy 20 / 28

Dimensional Range (Typical):

OD: Few mm to several hundred mm depending on alloy

Wall Thickness: <1 mm to 50 mm typical

Length: 6 m, 12 m or per request

4. Heat Exchanger Tubes

Applicable Standards:

ASTM A213 / A269 / A249 / A268, EN 10216-5

Common Grades: 304 / 316 / 321 / 347, Duplex 2205, Super Duplex 2507, Inconel 625, Hastelloy C276

Dimensional Range (Typical):

OD: 6 mm to 114 mm or per exchanger design

Wall Thickness: 0.5 mm to 10 mm typical

Length: 6 m, 12 m, U-bent or coil type

5. Superalloy Steel Tubes

Applicable Standards:

ASTM B167 / B444 / B775 and related high-temperature alloy specifications

Common Grades: Inconel 625 / 718, Hastelloy X / 230, Nimonic 80A / 90, Waspaloy, Rene 41, Haynes 230

Dimensional Range (Typical):

OD: 6 mm to 400 mm (depending on capability)

Wall Thickness: 1 mm to 20 mm typical

Length: 6 m, 12 m or custom

6.Bimetal / Clad / Lined Piping

Typically combinations: base-metal pipe standard (e.g. ASTM A106, ASTM A312, EN pipe/ tube standards) + cladding / overlay / liner material standard (e.g. stainless, nickel alloy spec)

In some cases, project / industry specs define clad / explosion bond / overlay requirements

API / NACE / corrosion standards often apply to inner layer in corrosive environments

Representative Material Combinations

Carbon steel (e.g. A106, A333) + Stainless steel liner (304, 316, 2205, etc.)

Stainless steel base + Nickel alloy inner lining

Duplex / Superduplex base + high corrosion resistant lining or overlay

Overlay / clad layers of Inconel, Hastelloy, etc.

Notes / Highlights

In site presentation, this category is “Clad / Lined Tubes & Pipes”

Emphasize composite advantage: structure + corrosion protection

Provide typical pairings and allowable standards / specs for both base and liner

Applicable Standards:

Combination of ASTM / ASME / EN base pipe + cladding layer standards

Structure: Carbon steel + Stainless steel liner; Stainless + Nickel alloy liner; Duplex + Corrosion resistant overlay

Dimensional Range (Typical):

OD: Same as base pipe range

Cladding thickness: 1–5 mm typical

Total wall thickness: Base + Clad layer

Length: Same as base pipe (usually 6–12 m)

Raw Material Checking,Chemical Analysis,Mechanical Test,Visual Inspection,Dimension Check,Bend Test,Impact Test,Intergranular Corrosion Test,Non-Destructive Examination（UT,MT,PT) Flaring and Flattening Test,Hardness Test,Pressure Testing,Ferrite Content Test, Metallography Testing, Corrosion Testing,Eddy Current Testing,Salt Spray Testing,Corrosion Resistance Testing, Vibration Test,Pitting Corrosion Test,Painting and Coating Inspection,Documentation Review…

Stainless steel seamless pipes are a crucial material widely used across various industries due to their exceptional corrosion resistance, high strength, and ability to withstand high temperatures. Here are some primary applications of stainless steel seamless pipes:

Oil and Gas Industry: Stainless steel seamless pipes are commonly employed in oil and gas exploration, transportation, and processing. They are used for well casings, pipelines, and processing equipment due to their corrosion resistance against liquids and gases.

Chemical Industry: In chemical processing and manufacturing, stainless steel seamless pipes are used to convey acids, bases, solvents, and other corrosive substances. They contribute to the safety and reliability of pipeline systems.

Energy Industry: Stainless steel seamless pipes play a critical role in energy production, including nuclear energy, fuel cells, and renewable energy projects, for pipelines and equipment.

Food and Beverage Industry: Thanks to their hygiene and corrosion resistance, stainless steel seamless pipes are widely used in food processing and beverage production, including the conveyance of liquids, gases, and food materials.

Pharmaceutical Industry: In pharmaceutical manufacturing and drug production, stainless steel seamless pipes are utilized for conveying and handling pharmaceutical ingredients, meeting hygiene and quality standards.

Shipbuilding: Stainless steel seamless pipes are used in shipbuilding for constructing vessel structures, pipeline systems, and seawater treatment equipment, owing to their resistance to marine environment corrosion.

Construction and Building Materials: Stainless steel seamless pipes used in construction are employed for water supply pipelines, HVAC systems, and decorative structural components.

Automotive Industry: In the automotive sector, stainless steel seamless pipes find application in exhaust systems due to their high-temperature resistance and corrosion resistance.

Mining and Metallurgy: In mining and metallurgical fields, stainless steel seamless pipes are used to transport ores, slurries, and chemical solutions.

In summary, stainless steel seamless pipes are versatile and offer superior performance, making them suitable for various industries. They play a crucial role in ensuring process safety, enhancing equipment reliability, and extending service life. Different applications require stainless steel seamless pipes with specific specifications and materials to meet their unique requirements.

Stainless steel pipes are packaged and shipped with utmost care to ensure their protection during transit. Here is a description of the packaging and shipping process:Packaging:

Protective Coating: Before packaging, stainless steel pipes are often coated with a layer of protective oil or film to prevent surface corrosion and damage.

Bundling: Pipes of similar sizes and specifications are carefully bundled together. They are secured using straps, ropes, or plastic bands to prevent movement within the bundle.

End Caps: Plastic or metal end caps are placed on both ends of the pipes to provide additional protection to the pipe ends and threads.

Padding and Cushioning: Padding materials such as foam, bubble wrap, or corrugated cardboard are used to provide cushioning and prevent impact damage during transportation.

Wooden Crates or Cases: In some cases, pipes may be packed in wooden crates or cases to provide extra protection against external forces and handling.

Mode of Transportation: Stainless steel pipes are typically shipped using various modes of transportation such as trucks, ships, or air freight, depending on the destination and urgency.

Containerization: Pipes may be loaded into shipping containers to ensure safe and organized transit. This also offers protection from weather conditions and external contaminants.

Labeling and Documentation: Each package is labeled with essential information, including specifications, quantity, handling instructions, and destination details. Shipping documents are prepared for customs clearance and tracking.

Customs Compliance: For international shipments, all necessary customs documentation is prepared to ensure smooth clearance at the destination.

Secure Fastening: Within the transportation vehicle or container, pipes are securely fastened to prevent movement and minimize the risk of damage during transit.

Tracking and Monitoring: Advanced tracking systems may be employed to monitor the location and condition of the shipment in real-time.

Insurance: Depending on the value of the cargo, shipping insurance may be obtained to cover potential losses or damages during transit.

In summary, stainless steel pipes we produced will be packaged with protective measures and shipped using reliable transportation methods to ensure they reach their destination in optimal condition. Proper packaging and shipping procedures contribute to the integrity and quality of the delivered pipes.

Looking for a reliable supplier ofStainless Steel Tubes?

We are ready to support your project with high-quality materials and expert technical service.

Tel: 0086-18390957568

Whatsapp: 0086-15575100681

E-mail:info@womicstainless.com

Website: www.womicstainless.com