SS 304 Seamless Pipes & Tubes
Austenitic Stainless Steel Seamless Piping Solutions

SS 304 Seamless Pipes & Tubes Supplier & Stockist in India

SS 304 Seamless Pipes are manufactured by piercing and processing solid billets without creating a longitudinal weld seam. Made from UNS S30400, they offer good corrosion resistance, formability and toughness for compatible industrial piping and equipment applications.

Metalloy Steel supplies SS 304 Seamless Pipes and Tubes in India for industrial requirements. Buyers can enquire about ASTM A312 SS 304 Seamless Pipes, specifying the required outside diameter, wall thickness, length and quantity to confirm product suitability, availability and pricing.

SS 304 Seamless Stainless Steel Pipes and Tubes
UNS S30400 ASTM A312 / ASME SA312 W.Nr. 1.4301 Cr 18–20% | Ni 8–10.5% 8.0 g/cm³
Technical Overview

SS 304 Seamless Pipe Specifications

Comprehensive standard parameters and dimensions for SS 304 seamless stainless steel pipe and tube products.

Parameter Details
Product Name SS 304 Seamless Pipes & Tubes
Grade Stainless Steel 304
UNS Designation S30400
Material Type Austenitic stainless steel
Manufacturing Process Seamless, formed without a longitudinal weld seam
Product Standard ASTM A312 / ASME SA312
Dimensions Outside diameter and wall thickness as specified
Length Standard or cut lengths, subject to requirements and availability
Supply Details Grade, dimensions, quantity, service conditions and inspection requirements
Material Standards & Metallurgy

Chemical Composition & Mechanical Properties of SS 304

International standard cross-references, chemical composition limits, and mechanical property parameters for UNS S30400.

Equivalent Grades of SS 304 Seamless Pipes
Standard Equivalent Designation
UNS S30400
Werkstoff / W.Nr. 1.4301
AFNOR Z7CN18-09
EN X5CrNi18-10
JIS SUS 304
BS 304S31
GOST 08Х18Н10
SS 304 Seamless Pipe Chemical Composition
Chemical Element Composition (%)
Carbon (C) 0.08 max
Manganese (Mn) 2.00 max
Silicon (Si) 1.00 max
Phosphorus (P) 0.045 max
Sulphur (S) 0.030 max
Chromium (Cr) 18.00–20.00
Nickel (Ni) 8.00–10.50
Iron (Fe) Balance
SS 304 Seamless Pipe Mechanical Properties
Mechanical Property Value
Density 8.0 g/cm³
Melting Range Approximately 1400°C
Tensile Strength 515 MPa
Yield Strength (0.2% Offset) 205 MPa
Elongation 40%
Hardness Approximately 201 HB
Solution Annealing Temperature Approximately 1040°C

For other available stainless steel pipe grades and schedules, explore our Pipes & Tubes range.

Interactive Estimation Tool

SS 304 Seamless Pipes Weight Calculator

Estimate real-time linear mass and total order weight for SS 304 Seamless Pipes and stainless steel tubes with our live 3D visualizer engine.

METALLOY STEEL INDUSTRIAL SUITE

SS 304 Pipe Weight Calculator

Density: 7.93 g/cm3 (7930 kg/m3) | Real-time weight estimator for stainless steel pipes.

Pick a size to auto-fill OD and wall thickness, or choose Custom and enter your own.

Outer Diameter, OD (mm)
Wall Thickness, WT (mm)
Length (M)
Max 12 M per piece.
Quantity (pieces)
3D PIPE VIEWPORT Drag to Rotate

Drag to rotate · updates live | OD 60.3 mm · ID 52.5 mm

Total Weight

32.96 kg

0.033 tonnes · 1 pc × 6.00 M

Weight per metre

5.493 kg/m

Weight per piece

32.96 kg

Inner diameter

52.48 mm

Total length

6.00 M

Specification Summary

Spec: Metalloy Steel | Grade: SS 304 Seamless Pipe | Size: 50 NB (2") SCH 40S | OD: 60.3 mm | WT: 3.91 mm | L: 6 M | Qty: 1 pc | Total: 32.96 kg

Specification copied to clipboard!
SS 304 Seamless Pipes Chemical Composition and Mechanical Properties
Key Benefits & Engineering Features

Key Advantages of SS 304 Seamless Pipes

Engineered for high-integrity pressure containment, structural reliability, and uniform metallurgical properties without welded seams.

No Longitudinal Weld Seam

Suitable for applications where the design specification calls for seamless pipe construction.

Pressure-System Selection

Can be specified for compatible pressure services when the pipe dimensions, design code, temperature and pressure ratings meet requirements.

Fabrication Flexibility

Supports cutting, forming and welding using appropriate procedures for stainless steel.

General Corrosion Resistance

Performs well in many atmospheric and process environments, subject to chemical concentration and operating temperature.

Grade Identification

UNS S30400 and designation 1.4301 help purchasing teams match material requirements across specifications and supply documents.

Alternative Welded Pipe Option

For applications where welded construction meets the project requirements, explore our SS 304 ERW Pipes.

Application Spectrum

Applications & Industries Using SS 304 Seamless Pipes

Typical components and industrial sectors relying on SS 304 seamless stainless steel pipes.

Industry Typical Applications
Oil & Gas Selected utility lines and process systems where SS 304 meets service requirements.
Chemical Processing Piping for compatible chemicals and process fluids.
Food & Beverage Process equipment and transfer lines with suitable surface and cleaning requirements.
Pharmaceutical Utility piping and equipment systems meeting specified hygiene standards.
Power & Utilities Selected water, utility and auxiliary piping systems.
General Engineering Instrumentation connections, equipment piping and fabricated assemblies.
Testing & Verification

Quality Assurance & Testing

Metalloy Steel can discuss inspection and documentation requirements for SS 304 Seamless Pipes according to the purchase specification and order scope.

Material Test Certificate (EN 10204 Type 3.1)

Can be requested, subject to availability.

Positive Material Identification (PMI)

Helps verify alloy grade.

Chemical Analysis

Checks composition against the specified grade.

Mechanical Testing

Testing can be specified according to the applicable standard.

Dimensional Inspection

Verifies outside diameter, wall thickness and length.

Third-Party Inspection

Can be discussed subject to project requirements and availability.

Got Questions?

Frequently Asked Questions

Clarifications on standards, grade equivalents, dimensions, and procurement for SS 304 Seamless Pipes.

The UNS designation is S30400. Other common equivalents include 1.4301, X5CrNi18-10 and SUS 304.

ASTM A312 / ASME SA312 is commonly specified for austenitic stainless steel pipes. Confirm the required grade, dimensions and service conditions before ordering.

Seamless pipes are formed without a longitudinal weld seam, while welded pipes are made by joining formed steel strip or plate. The appropriate product depends on the design code and application.

They may be suitable when the selected dimensions, material condition and allowable pressure meet the governing design code and operating requirements.

Buyers can enquire about required outside diameter, wall thickness and length. Supply options depend on the specification and availability.

Provide the grade, pipe or tube dimensions, length, quantity, applicable standard and intended service conditions.

Request a Quote for SS 304 Seamless Pipes

Contact Metalloy Steel, an SS 304 Seamless Pipes Supplier in India, with your required dimensions, quantity and applicable standard to discuss product suitability, availability and pricing.

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