Inox Steel India supplies ASTM A632 Small-Diameter Stainless Steel Tubing designed for applications that demand tight OD/WT tolerances, exceptional cleanliness, smooth internal surfaces, and reliable corrosion resistance.
These tubes are widely used in instrumentation circuits, hydraulic systems, pharmaceutical equipment, chemical dosing lines, and small-bore heat exchanger applications.
ASTM A632 covers seamless and welded small-diameter austenitic stainless-steel tubes, typically produced in coil form or short straight lengths, with bright annealed finishing to ensure clean fluid flow and minimal contamination risk.
Their lightweight construction and flexibility make them ideal for precision bending, tube routing, and compact system layouts.
These tubes undergo cold drawing, bright annealing, solution annealing, eddy current testing, and surface inspection, ensuring consistent dimensional stability and clean, defect-free performance.
Inox Steel India supplies ASTM A632 tubing across India, the Middle East, Europe, Africa, and South-East Asia — with complete certification, export-grade packaging, and fast dispatch support.
ASTM A632 tubing is engineered for precision flow control, small-bore instrumentation, and clean media transfer in demanding industrial environments.
Its tight tolerances, bright annealed finish, and consistent cold-drawn metallurgy make it suitable for pharma, instrumentation, chemical dosing, heat exchangers, and hydraulic lines.
Recommended Grades: TP316L · TP304L
Best Grades: TP304 · TP316
Recommended: TP316 / TP316L
Key Grade: TP316L (pharma-grade)
| Tubing Type | OD Range | WT Range | Applications |
| Small-Bore Instrumentation Tubes | 3–12.7 mm | 0.20–2.0 mm | Precision measurement & control |
| Coiled Tubes | 1.6–12 mm | 0.25–1.5 mm | Pharma, gas, hydraulic |
| Straight Length Tubes | 6–15.8 mm | 0.5–2.0 mm | Chemical, general service |
| Grade | Approx. Price (₹/kg) |
| TP304 / TP304L | ₹350 – ₹550 |
| TP316 / TP316L | ₹420 – ₹700 |
| Bright Annealed Tubing | +10–25% premium |
| Industry | Uses |
| Instrumentation | Impulse lines, gauges, control tubing |
| Pharmaceutical & Biotech | PW/WFI lines, skids, dosing circuits |
| Chemical Processing | Chemical feed lines, specialty gas distribution |
| Hydraulic & Pneumatic | Actuators, equipment routing |
| Food & Beverage | Clean transfer of liquids and additives |
| Heat Exchanger OEMs | Mini condensers & compact exchangers |
| Automotive & Aerospace | Fuel lines, small-bore testing assemblies |
📞 Call / WhatsApp: +91-XXXXXXXXXX
📧 Email: sales@inoxsteelindia.com
Q1. What sizes are generally available?
Typically 3–15.88 mm OD with 0.10–2.0 mm WT; coil or straight.
Q2. Which grade should be used for chemical dosing?
TP316L offers the best corrosion resistance.
Q3. Do you supply long-length coil tubes?
Yes — seamless & welded coils for continuous installations.
Q4. Can ASTM A632 tubes be used in pharma?
Yes — BA finish & clean ID make them ideal for PW/WFI systems.
Q5. What certifications are provided?
MTC 3.1, NDT reports, chemical/mechanical tests & BA finish validation.