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Quality Schedule 40 80 Stainless Steel 304 Seamless Pipe ASTM A312 TP304 factory
Quality Schedule 40 80 Stainless Steel 304 Seamless Pipe ASTM A312 TP304 factory

Schedule 40 80 Stainless Steel 304 Seamless Pipe ASTM A312 TP304

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Sch 80 Stainless Steel 304 Seamless Pipe
Product Summary
Our Stainless Steel 304 Seamless Pipe is manufactured to ASTM A312 TP304 standards, offering exceptional corrosion resistance, high-temperature strength, and dimensional precision. Produced by extruding solid billet without any weld seam, this seamless stainless steel pipe is the preferred choice ...

Product Details

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Sch 80 Stainless Steel 304 Seamless Pipe

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Schedule 80 304 Stainless Steel Pipe

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304 SS Schedule 40 Pipe
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

Our Stainless Steel 304 Seamless Pipe is manufactured to ASTM A312 TP304 standards, offering exceptional corrosion resistance, high-temperature strength, and dimensional precision. Produced by extruding solid billet without any weld seam, this seamless stainless steel pipe is the preferred choice for critical applications in chemical processing, food & beverage, pharmaceutical, oil & gas, and power generation industries where weld integrity is a primary concern.

Available in a full range of schedules (Sch 10, Sch 40, Sch 80, Sch 160) and sizes from 1/8″ to 24″ NPS, our SS 304 seamless pipe delivers reliable performance in both high-pressure and high-temperature environments.

What is Stainless Steel 304 Seamless Pipe?

Stainless Steel 304 is the most widely used austenitic stainless steel grade, known for its excellent formability, weldability, and corrosion resistance. When manufactured as a seamless pipe (per ASTM A312 TP304), the product contains no longitudinal weld seam, eliminating the risk of weld-related failures in critical service conditions.

The seamless manufacturing process involves heating a solid stainless steel billet and piercing it to create a hollow tube, which is then rolled and drawn to achieve precise dimensions. This results in a pipe with uniform wall thickness, superior mechanical properties, and complete material homogeneity.

Key Specifications at a Glance:

Specification Details
Standard ASTM A312 / ASME SA312
Grade TP304, TP304L , TP304H
Type Seamless (SMLS) – No weld seam
Size Range 1/8″ to 24″ NPS (DN6 to DN600)
Schedules Sch 5S, 10S, 20, 30, 40S, 60, 80S, 100, 120, 140, 160, XXS
Lengths Single Random (16-22 ft), Double Random (35-40 ft), or Custom
End Finish Plain Ends, Beveled Ends, Threaded
Surface Finish Mill Finish, Pickled & Annealed, Bright Annealed, Polished
Chemical Composition of SS 304 Seamless Pipe (ASTM A312 TP304)
Element TP304 TP304L TP304H
Carbon (C) ≤ 0.08% ≤ 0.035% 0.04 – 0.10%
Manganese (Mn) ≤ 2.00% ≤ 2.00% ≤ 2.00%
Phosphorus (P) ≤ 0.045% ≤ 0.045% ≤ 0.045%
Sulfur (S) ≤ 0.030% ≤ 0.030% ≤ 0.030%
Silicon (Si) ≤ 1.00% ≤ 1.00% ≤ 1.00%
Chromium (Cr) 18.0 – 20.0% 18.0 – 20.0% 18.0 – 20.0%
Nickel (Ni) 8.0 – 11.0% 8.0 – 12.0% 8.0 – 11.0%
Mechanical Properties
Property TP304 TP304L TP304H
Tensile Strength (min) 75 ksi (515 MPa) 70 ksi (485 MPa) 75 ksi (515 MPa)
Yield Strength (min) 30 ksi (205 MPa) 25 ksi (170 MPa) 30 ksi (205 MPa)
Elongation (min) 35% 35% 35%
Hardness (max HRB) 90 90 90
Physical Properties of SS 304 Seamless Pipe
Property Value
Density 8.0 g/cm³ (0.289 lb/in³)
Melting Point 1400 – 1450°C (2550 – 2650°F)
Modulus of Elasticity 193 GPa (28 x 10⁶ psi)
Thermal Conductivity (100°C) 16.2 W/m·K
Specific Heat (0-100°C) 500 J/kg·K
Electrical Resistivity 72 μΩ·cm
Mean Coefficient of Expansion (0-315°C) 17.2 µm/m·K
Dimensions: 304 Seamless Pipe Schedule Chart

SS 304 seamless pipe follows the dimensional standards of ASME B36.10 (for heavy wall) and ASME B36.19 (for stainless steel). Below are common dimensions:

NPS OD (inches) Sch 10S Sch 40S Sch 80S Sch 160
1/2″ 0.840 0.083″ 0.109″ 0.147″ 0.188″
3/4″ 1.050 0.083″ 0.113″ 0.154″ 0.219″
1″ 1.315 0.109″ 0.133″ 0.179″ 0.250″
1-1/2″ 1.900 0.109″ 0.145″ 0.200″ 0.281″
2″ 2.375 0.109″ 0.154″ 0.218″ 0.344″
3″ 3.500 0.120″ 0.216″ 0.300″ 0.438″
4″ 4.500 0.120″ 0.237″ 0.337″ 0.531″
6″ 6.625 0.134″ 0.280″ 0.432″ 0.719″
8″ 8.625 0.148″ 0.322″ 0.500″ 0.906″
10″ 10.750 0.165″ 0.365″ 0.594″ 1.000″
12″ 12.750 0.180″ 0.375″ 0.687″ 1.125″

Note: Sch 40S and Sch 80S are the standard schedules for stainless steel pipe. The "S" designation indicates stainless steel dimensions.

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