Stainless Steel Seamless Tube


Mcneil Instruents Inc. is one of the Best leading Stainless Steel Tube manufacturers, Suppliers and Exporters in India. Stainless Steel Seamless Tube is made up of stainless steel materials. There are different stainless steel grades. The 304 grade is the most used and the 304 stainless steel tubes are cost effective.

There are several different types of stainless steel, including austenitic, duplex, and pipes made of economically pure metal. Mcneil Instrumnts Inc. is a manufacturer of Stainless Steel Seamless tube in different types, shapes and methods. Our stainless steel Seamless tubes are utilized in various applications where easier installation and greater dimensional precision are necessary.

Leading Manufacturer of Stainless Steel Seamless Tube

Mcneil Instrument, a renowned manufacturer, supplier, and exporter in India, specializes in producing high-quality Stainless Steel Seamless Tubes. Our seamless tubes are crafted with precision using premium-grade stainless steel, ensuring exceptional durability, corrosion resistance, and long-lasting performance. With a commitment to delivering excellence, we cater to various industries, offering a wide range of sizes, grades, and specifications to meet diverse application requirements. As a trusted manufacturer, Mcneil Instrument prioritizes stringent quality control measures, ensuring that our Stainless Steel Seamless Tubes adhere to international standards and surpass customer expectations. Whether you need tubes for fluid transportation, heat exchangers, or structural applications, our seamless tubes provide reliable and efficient performance in demanding environments. Rely on Mcneil Instrument for top-notch Stainless Steel Seamless Tubes that guarantee superior quality, strength, and reliability for your projects.

Stainless Steel Seamless Tube Tolerances

NPS DesignatorPermissible Variations in Outside Diameter
Over In.Under In.
1/8 to 1-1/2, incl1/64 (0.015)1/32 (0.031)
Over 1-1/2 to 4, incl1/32 (0.031)1/32 (0.031)
Over 4 to 8, incl1/16 (0.062)1/32 (0.031)
Over 8 to 18, incl3/23 (0.093)1/32 (0.031)

Stainless Steel Seamless Tubes Specification

Specification Format of Stainless Steel Seamless Tubes:-

Specification AspectDescription
StandardASTM, ASME, JIS, EN, DIN, etc.
Material Grade304, 304L, 316, 316L, 321, 347, 310S, etc.
Outer Diameter (OD)Specified in inches or millimeters (e.g., 1/8″ to 24″ or 6mm to 610mm)
Wall Thickness (WT)Specified in inches or millimeters (e.g., SCH 5, 10, 40, 80, 160, or 0.5mm to 25mm)
LengthStandard lengths (e.g., 6m, 12m) or custom lengths
Manufacturing ProcessCold drawn, hot rolled, or cold finished
Surface FinishAnnealed and pickled, bright annealed, polished, etc.
Mechanical PropertiesYield strength, tensile strength, elongation, hardness
Chemical CompositionPercentages of elements like C, Mn, Si, P, S, Cr, Ni, Mo, etc.
Testing RequirementsHydrostatic test, eddy current test, ultrasonic test, etc.
CertificationMill test certificates, third-party inspection reports
End FinishesPlain ends, beveled ends, threaded ends
Special RequirementsTolerances, straightness, ovality, etc.

Example Specifications Table for a Specific Tube

StandardASTM A312
Material Grade316L
Outer Diameter (OD)1″ (25.4 mm)
Wall Thickness (WT)SCH 40 (3.68 mm)
Length6 meters
Manufacturing ProcessCold drawn
Surface FinishAnnealed and pickled
Mechanical PropertiesYield strength: 205 MPa, Tensile strength: 515 MPa, Elongation: 35%, Hardness: 90 HRB
Chemical CompositionC: 0.03%, Mn: 2.00%, Si: 0.75%, P: 0.045%, S: 0.03%, Cr: 16.00-18.00%, Ni: 10.00-14.00%, Mo: 2.00-3.00%
Testing RequirementsHydrostatic test, Eddy current test
CertificationMill test certificate
End FinishesPlain ends
Special RequirementsDimensional tolerances as per ASTM A999


Stock of Stainless Steel Seamless Pipe

SS TP 304 Seamless PipesStainless TP 304L Seamless Tubing
ASTM A213 Stainless Welded PipeA249 SS TP Welded Tubes
ASTM A358 310S Stainless ERW PipeA312 SS 310 Rectangular Seamless Pipe
ASTM A213 316 SS Rectangular TubesTP 316L SS ERW Tubes
TP 316H Stainless Coiled Seamless TubingSS Heat Ex-changer Tubes
Stainless 317L Round TubingASTM A213 317 Stainless Square Seamless Pipes
ASME TP Stainless Electric Fusion Welding PipesTP 321 SS EFW Tubing

Schedule List of Stainless Steel Seamless Tubes

ScheduleOuter Diameter (OD)Wall Thickness (WT)
SCH 51/8″ to 24″0.035″ to 0.500″
SCH 101/8″ to 24″0.049″ to 0.500″
SCH 201/8″ to 24″0.065″ to 0.500″
SCH 301/8″ to 24″0.083″ to 0.500″
SCH 401/8″ to 24″0.109″ to 0.500″
SCH 601/8″ to 24″0.134″ to 0.500″
SCH 801/8″ to 24″0.154″ to 0.500″
SCH 1001/8″ to 24″0.179″ to 0.500″
SCH 1201/8″ to 24″0.218″ to 0.500″
SCH 1401/8″ to 24″0.250″ to 0.500″
SCH 1601/8″ to 24″0.281″ to 0.500″
XXS1/8″ to 24″0.307″ to 0.500″


Stainless Steel Seamless Tube Size Inch

Here’s a detailed table showing the standard sizes of stainless steel seamless tubes in inches, including the outer diameter (OD) and corresponding wall thicknesses for various schedules:

Nominal Pipe Size (NPS)Outer Diameter (OD)SCH 5SSCH 10SSCH 40S (STD)SCH 80S (XS)SCH 160XXS
1 1/41.6600.0650.1090.1400.191
1 1/21.9000.0650.1090.1450.200
2 1/22.8750.0830.1200.2030.276
3 1/24.0000.0830.1200.2260.318

This table provides a comprehensive overview of the sizes and wall thicknesses for various schedules of stainless steel seamless tubes, helping you choose the right specifications for your needs.

Mcneil instruments provide their services all over the world. We are supplying it to their esteemed and valued clients with the best prices and services. These Stainless Steel Tubes are available from us at very competitive and suitable pricing. All our products are designed and developed using high-grade raw material and latest technology to ensure that final output meets with international quality norms & standards. Moreover, we check all products on various parameters to assure zero defect.

  • Corrosion resistant
  • Temperature resistant
  • Easy formability and fabrication
  • Low-maintenance (long lasting)
  • Attractive appearance
  • Environmentally friendly (recyclable)
  • Durable
  • High tensile strength
  • Longer service life
  • Minimal maintenance

The cleanliness and purity of materials that come into direct touch with stainless steel can be ensured by stainless steel seamless tube’s resistance to high temperatures. Stainless steel tubing is applied in chemical facilities, aviation areas, marine equipment, cryogenic transportation, medicinal and architectural industries.

  • Chemical plants
  • Aviation fields
  • Marine equipment
  • Medical & architectural industries
  • Cryogenic transportation
Product NameExucative StandardDimensionSteel Grade
Seamless Austenitic Stainless Steel PipesASTM A312/A312M, ASME SA312/SA312MOD: 6.0~914.0mm WT: 0.5~88mmTP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Austenitic Stainless Steel Tubing for General ServiceASTM A269, ASME SA269OD: 6.0~50.8mm WT: 0.8~10.0mmTP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Austenitic Alloy-Steel Boiler, Super Heater and Heat-Exchanger TubesASTM A213/A213M, ASME SA213/SA213MOD: 6.0~50.8mm WT: 0.8~10.0mmTP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Duplex Stainless Steel Tubing for General ServiceASTM A789 / A789MOD: 19.0~60.5mm WT: 1.2~5.0mmS31803, S32205, S32750
Seamless Duplex Stainless Steel PipesASTM A790 / A790MOD: 3/4″~10″ WT: SCH5S~SCH80SS31803, S32205, S32750
Seamless Stainless Steel Mechanical TubingASTM A511OD: 6.0~50.8mm WT: 1.8~10.0mmMT304, MT304L, MT304H, MT310, MT310S, MT316, MT316L, MT317, MT317L, MT321, MT321H, MT347
Seamless Stainless Steel Tubes for Pressure PurposesEN 10216, DIN 17456, 17458OD: 6.0~914.0mm WT: 0.5~88mm1.4301, 1.4307, 1.4541, 1.4401, 1.4404, 1.4571, 1.4878, 1.4432, 1.4462
Steel No.TypeChemical composition