Steelage Alloys supplies premium-quality Stainless Steel Valex Pipes & Tubes known for ultra-clean surfaces, precise dimensional control, and exceptional corrosion resistance. These tubes are specially designed for semiconductor, pharmaceutical, biotech, and ultra-high-purity (UHP) gas systems, where the highest standards of cleanliness and surface finish are non-negotiable.
Valex-grade pipes undergo advanced cold-working and electropolishing, followed by rigorous testing and cleaning in ISO-certified cleanrooms. These pipes are typically used in environments that demand low particle generation, minimal surface roughness, and chemical compatibility with high-purity process gases and fluids.
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| Standard | Description / Relevance |
|---|---|
| SEMI F20 | Semiconductor Equipment and Materials International standard for high-purity stainless steel tubing used in semiconductor gas distribution systems. |
| ASME BPE | (Bioprocessing Equipment) Specifies hygienic design for pharmaceutical, biotech, and personal care industries * includes surface finish, materials, and dimensional requirements. |
| ASTM A269 | Standard for seamless and welded austenitic stainless steel tubing for general corrosion-resisting and high-purity service. |
| ASTM A270 | Sanitary tubing standard covering specifications for tubes used in food and pharmaceutical industries. |
| ASTM A632 | Specification for seamless and welded stainless steel tubing for general service with particular surface requirements. |
| EN 10357 | European standard for stainless steel tubes used in food and chemical processing, often comparable to ASME BPE. |

Formula: m = (OD - THK) * THK (mm) * L (m) * 0.02491
* For 316, 316L, 310S, 309S, etc., ratio=0.02507
OD = Outer diameter, THK = Wall Thickness, L = Length
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