STAINLESS STEEL SS 316/ 316L Hollow Bar
Stainless Steel SS 316 / 316L Hollow Bar Manufacturer & Supplier – Austenitic Pipe & Shafting Tube Stock
We are a professional Stainless Steel 316 / 316L Hollow Bar manufacturer .We supply a wide range of SS 316 and 316L hollow bars in seamless and welded forms. These are widely used in marine, food processing, pharmaceutical, petrochemical, and precision machining industries.
What is a Hollow Bar?
A hollow bar is a circular steel bar with a central bore (hole), offering a cost-effective alternative to drilling from solid round bar or using seamless pipe. It provides better material savings and easier machinability for components like bushings, bearing sleeves, hydraulic cylinders, shafts, and mechanical parts.
Stainles steel Hollow bar Grade Overview
| Grade | Description |
|---|---|
| SS 316 | Austenitic stainless steel with Molybdenum (Mo), providing superior corrosion resistance in chloride environments. |
| SS 316L | Low carbon version of 316, offering excellent weldability and resistance to sensitization (intergranular corrosion). |
| Outer Diameter (OD) | 25 mm to 400 mm |
|---|---|
| Wall Thickness | 5 mm to 50 mm |
| Length | 1 to 6 meters (or custom cut) |
| Tolerances | As per ASTM A511, ASTM A312, or customer request |
| Supply Condition | Cold Drawn, Annealed & Pickled / Polished |
Standards: ASTM A511, ASTM A312, EN 10216-5, DIN 17458
Grades: AISI 316 / AISI 316L / UNS S31600 / UNS S31603 / 1.4401 / 1.4404
Chemical Composition (%)
| Element | SS 316 | SS 316L |
|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.03 |
| Chromium (Cr) | 16.0–18.0 | 16.0–18.0 |
| Nickel (Ni) | 10.0–14.0 | 10.0–14.0 |
| Molybdenum (Mo) | 2.0–3.0 | 2.0–3.0 |
| Manganese (Mn) | ≤ 2.0 | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 | ≤ 0.03 |
Key Features
-
Excellent corrosion resistance in marine, acidic, and chloride-rich environments
-
Outstanding machinability and dimensional stability
-
Great for bored bar machining without the need for deep hole drilling
