Schedule 40 80 Stainless Steel 304 Seamless Pipe ASTM A312 TP304
Product Details
Sch 80 Stainless Steel 304 Seamless Pipe
,Schedule 80 304 Stainless Steel Pipe
,304 SS Schedule 40 Pipe
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.
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 |
| 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% |
| 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 |
| 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 |
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.
Provide your project requirements and receive a detailed quotation within 24 hours.
Mrs. Zhongcheng Metal
Manager
- Email: zhongcheng@metalsstainlesssteel.com
- Tel: 13309216881
- WhatsApp: 13309216881
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