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Stainless-steel-heavy-wall-thickness-tubes
Heavy-Wall Stainless Steel Pipe & High-Pressure Tubing
1. Product Introduction
Our heavy-wall stainless steel pipes are specifically engineered for extreme environments where high pressure, intense heat, and corrosive media are constant challenges. Unlike standard tubing, these thick-walled sections provide the structural mass required for mechanical machining, high-pressure fluid transmission, and heavy-duty industrial framing. We utilize advanced cold-drawing and hot-finishing processes to ensure uniform wall thickness and superior grain structure.
2. Premium Materials & Performance
We offer a range of grades to suit specific industrial requirements:
●Austenitic Series (304/304L, 316/316L): The industry standard for excellent corrosion resistance and weldability. 316L is particularly recommended for marine and chemical processing due to its molybdenum content.
●Duplex & Super Duplex (S31803, S32750): Designed for maximum strength and exceptional resistance to stress corrosion cracking and pitting.
●High-Temperature Alloys (310S, 321, 347H): Maintains mechanical properties and oxidation resistance at elevated temperatures.
3. Technical Parameters & Capabilities
Feature | Specification / Capability |
Imperial OD Range | 1/8" to 24" |
Wall Thickness (WT) | 0.035" to 2.000" (Schedule 40, 80, 160, and XXS) |
Standard Compliance | ASTM A312, ASTM A213, ASTM A269, ASTM A511 |
Tolerances | According to ASTM A450 / ANSI B36.19M |
4. High-Pressure & Extra-Heavy Wall Size Matrix
Nominal OD (Inches) | Decimal OD (mm) | Wall Thickness (Inches) | Wall Thickness (mm) | Type / Pressure Rating |
1/4" | 6.35 mm | 0.065" / 0.083" | 1.65 / 2.11 mm | High Pressure |
3/8" | 9.53 mm | 0.083" | 2.11 mm | Sch 80 / High Pressure |
0.095" | 2.41 mm | UHP (Ultra-High Pressure) | ||
0.109" | 2.77 mm | Extra-Heavy Wall | ||
1/2" | 12.70 mm | 0.083" | 2.11 mm | Sch 80 |
0.109" | 2.77 mm | Sch 160 / Hydraulic | ||
0.120" | 3.05 mm | Super-Heavy Wall | ||
3/4" | 19.05 mm | 0.113" | 2.87 mm | Sch 80 |
0.154" | 3.91 mm | Sch 160 | ||
0.218" | 5.54 mm | XXS (Double Extra Strong) | ||
1" | 25.40 mm | 0.179" | 4.55 mm | Sch 160 |
0.250" | 6.35 mm | Hollow Bar Grade | ||
0.312" | 7.92 mm | Ultra-Thick Machining Wall | ||
1-1/2" | 38.10 mm | 0.200" | 5.08 mm | Sch 80 |
0.281" | 7.14 mm | Sch 160 | ||
0.400" | 10.16 mm | Heavy Mechanical Sleeve | ||
2" | 50.80 mm | 0.343" | 8.71 mm | Sch 160 |
0.436" | 11.07 mm | XXS Grade | ||
0.500" | 12.70 mm | Extreme Duty / Structural |
5. The "Hollow Bar" Advantage
Stop Drilling, Start Machining.
Why buy solid bar stock only to drill out 60% of the material? Our extreme-wall tubing serves as a Hollow Bar replacement, providing:
●Reduced Material Cost: Pay only for the steel you keep.
●Faster Cycle Times: Eliminate deep-hole drilling from your production line.
●Extended Tool Life: Reduced heat generation and chip load on your CNC machines.
●High Concentricity: Guaranteed center-alignment for high-speed rotational parts.
6. Technical Safeguards & Testing
To ensure reliability in high-hazard environments (Subsea, Oil & Gas, Aerospace), every pipe undergoes:
●Ultrasonic Testing (UT): 100% scanning for internal longitudinal and transverse defects (per ASTM E213).
●Eddy Current Testing (ET): Surface integrity verification (per ASTM E309).
●Hydrostatic Pressure: Capacity to test up to 20,000 PSI depending on wall-to-OD ratio.
●Microstructure Analysis: Ensuring uniform grain size for superior weldability and fatigue resistance.
7. Material Performance
●316/316L: Superior chloride resistance and stable non-magnetic properties (u < 1.01)
●Duplex S31803 / S32750: For maximum yield strength and pitting resistance in marine environments.
●Specialty Alloys: 310S (Heat resistant) and 321 (Stabilized) for extreme thermal cycling.
8. Common Applications
●Hydraulic Cylinders & Manifolds
●High-Pressure Hydrogen Refueling Lines
●Downhole Oil Tools & Subsea Housings
●Precision Bushings, Bearings & Spacers
●Medical MRI Components (Non-magnetic series)
