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Durable Stainless Steel Pipe: TP316L & AISI 304/316 Certified
Durable Stainless Steel Pipe: TP316L & AISI 304/316 Certified
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Durable Stainless Steel Pipe: TP316L & AISI 304/316 Certified
Product Overview
Our stainless steel pipe solutions are engineered for unmatched durability, certified to meet AISI 304/316 and TP316L standards. Designed for industrial, chemical, and construction applications, these pipes excel in high-pressure, corrosive, and extreme-temperature environments. With stainless steel pipe dimensions ranging from 1/8" to 48" OD and Sch5s to Sch160 thickness, our products ensure versatility across projects.
Technical Specifications
| Property | TP316L | AISI 304 | AISI 316 |
|---|---|---|---|
| Outer Diameter (OD) | 1/8"–10" (6mm–219mm) | 1/8"–48" (13.7–1067mm) | 1/8"–48" (13.7–1067mm) |
| Thickness (WT) | Sch5s–Sch160 (0.38–12.7mm) | Sch5s–XXS (0.38–12.7mm) | Sch5s–XXS (0.38–12.7mm) |
| Length | 6m–11m (Customizable) | 5.8m–12m | 5.8m–12m |
| Hardness (HV) | <200 HV | <200 HV | <200 HV |
| Surface Finish | Annealed, Pickled, Polished | 2B, BA, Mirror (400–800G) | 2B, BA, Mirror (400–800G) |
| Standards | ASTM A312, A269, A270 | ASTM A312, A358, EN 10217 | ASTM A312, A358, EN 10217 |
Key Mechanical & Chemical Properties
Tensile Strength
- TP316L: Minimum 485 MPa (70,300 psi), ensuring resistance to deformation under high stress.
- AISI 304/316: Exceeds 515 MPa (74,700 psi), ideal for structural and pressure applications.
Yield Strength
- TP316L: ≥170 MPa (24,600 psi), optimized for load-bearing systems.
- AISI 304/316: ≥205 MPa (29,700 psi), suitable for dynamic industrial environments.
Elongation
- TP316L: 40% elongation (50mm gauge), preventing brittle fractures.
- AISI 304/316: 35–40% elongation, balancing flexibility and rigidity.
Bending Strength & Fatigue Resistance
Our stainless steel pipe exhibits superior bending strength due to its austenitic microstructure. TP316L and AISI 316 pipes withstand cyclic stress without cracking, making them ideal for piping systems in oil refineries and chemical plants. The addition of 2–3% molybdenum in TP316L enhances resistance to chloride-induced stress corrosion cracking.
Weight Calculation Formula
Calculate pipe weight using:
Example: For a 6" Sch40S pipe (OD=168mm, WT=7.11mm):
Why Stainless Steel Pipes Rust?
While stainless steel pipe is highly corrosion-resistant, localized rusting may occur due to:
- Chloride Exposure: Prolonged contact with seawater or de-icing salts can break down the passive chromium oxide layer.
- Mechanical Damage: Scratches or weld splatter disrupt surface integrity, accelerating oxidation.
- Low Oxygen Environments: Stagnant water or crevices reduce oxygen availability, inhibiting self-repair of the oxide layer.
- Carbon Contamination: Improper welding or grinding introduces carbon, leading to intergranular corrosion.
Identification & Marking
Each pipe is laser-etched with:
- Material Grade (e.g., TP316L, AISI 304).
- Standard (ASTM A312, EN 10217).
- Dimensions (OD, WT, length).
- Heat Number for traceability.
Manufacturing Process
- Seamless Production: Solid billets are perforated and cold-drawn for uniform stainless steel pipe sizes and wall thickness.
- Welded Production: Coils are formed and TIG-welded, followed by annealing and pickling.
- Surface Treatment: Polishing (up to 800G mirror finish) or brushing for aesthetic and functional needs.
Why Choose Our Stainless Steel Pipes?
- Certified Quality: Compliant with ASTM, EN, and ASME standards, backed by ISO 9001 and PED certifications.
- Precision Tolerances: OD ±0.1mm, WT ±10%, ensuring seamless integration into complex systems.
- Custom Solutions: Tailored stainless steel pipe dimensions, lengths (1–12m), and surface finishes.
- Global Trust: Over 15 years of export expertise, serving oil & gas, pharmaceuticals, and food industries.
- Competitive Pricing: Direct factory rates with MOQ as low as 1 ton and rapid 7–45-day delivery.
