{
  "name": "Stainless & alloy tube and bar",
  "sku": "AVX-1804",
  "brand": "Averinox",
  "summary": "Stainless and higher-alloy tube, round bar and flat bar as material for fabrication. Sawn to length and marked, EN 10204 3.1 on request.",
  "definition": "Stainless tube and bar is semi-finished long product — tube, round bar and flat bar — supplied in standard mill forms to be machined, welded, bent or fabricated into a finished part. Three things define it together: the grade, the product standard it is made and tested to, and the delivery condition (seamless or welded, hot or cold finished, pickled, annealed or ground). A length of tube or bar does its job as long as those three match the duty it ends up in, and as long as the material certificate stays traceable to the piece you actually cut.",
  "alsoKnownAs": [
    "stainless steel tube",
    "stainless steel round bar",
    "stainless flat bar",
    "seamless and welded tube",
    "316L tube supplier",
    "bar stock for machining"
  ],
  "url": "https://averinox.com/solutions/alloy-semi-finished/",
  "image": "https://averinox.com/og/solutions-alloy-semi-finished.png",
  "language": "en",
  "localizedVersions": [
    {
      "language": "en",
      "name": "Stainless & alloy tube and bar",
      "url": "https://averinox.com/solutions/alloy-semi-finished/"
    },
    {
      "language": "nl",
      "name": "RVS buis, rondstaf en platstaf",
      "url": "https://averinox.com/nl/solutions/alloy-semi-finished/"
    },
    {
      "language": "de",
      "name": "Edelstahl Halbzeug: Rohr und Stab",
      "url": "https://averinox.com/de/solutions/alloy-semi-finished/"
    },
    {
      "language": "it",
      "name": "Tubi e barre inox e in lega",
      "url": "https://averinox.com/it/solutions/alloy-semi-finished/"
    },
    {
      "language": "fr",
      "name": "Tubes & barres inox et alliages",
      "url": "https://averinox.com/fr/solutions/alloy-semi-finished/"
    },
    {
      "language": "es",
      "name": "Tubo y barra de acero inoxidable y aleación",
      "url": "https://averinox.com/es/solutions/alloy-semi-finished/"
    }
  ],
  "materialNotes": "Standard in 304/304L and 316/316L, the grades that cover most fabrication. 321 and 316Ti for the sensitisation window, Duplex 1.4462 where chlorides and higher strength meet, and nickel alloys such as Inconel, Incoloy, Monel and Hastelloy where the medium demands them. The higher alloys are sourced per order rather than held as a general range; availability, the forms obtainable and lead time for those are confirmed at quotation.",
  "specifications": [
    {
      "property": "Forms supplied",
      "value": "Long product: tube, round bar and flat bar"
    },
    {
      "property": "Tube outside diameter",
      "value": "6–168.3 mm (common commercial span); larger as welded tube"
    },
    {
      "property": "Tube wall thickness",
      "value": "typically 1.0–12.5 mm, set by diameter and schedule; seamless or welded"
    },
    {
      "property": "Bar dimensions",
      "value": "round 6–250 mm Ø; flat bar 20 × 3 mm to 150 × 30 mm (common commercial sizes)"
    },
    {
      "property": "Delivery lengths",
      "value": "commercial mill lengths, typically 3–6 m; sawn to length on request"
    },
    {
      "property": "Surface condition",
      "value": "tube pickled or bright annealed; bar hot rolled, cold drawn, peeled or ground"
    },
    {
      "property": "Grades",
      "value": "1.4301/304, 1.4404/316L, 1.4541/321, 1.4571/316Ti, 1.4462 Duplex; nickel alloys per order"
    },
    {
      "property": "Product standards",
      "value": "tube ASTM A312 / A213 / A269, EN 10216-5 / 10217-7; bar ASTM A276 / A479, EN 10088-3"
    },
    {
      "property": "Material certificate",
      "value": "EN 10204 3.1 on request; 3.2 (mill plus your own or a designated inspector) by arrangement"
    }
  ],
  "specificationsNote": "Values shown are standard industry ranges for stainless and alloy tube and bar — not a commitment and not a stock statement. The exact specification — form, grade, dimension, tolerance class, delivery condition and certificate level — is confirmed per application after technical review, and availability and lead time are confirmed at quotation.",
  "applications": [
    "Machined parts, shafts and spindles in corrosive service",
    "Process pipework, spools and fabricated fittings",
    "Frames, skids, supports and guarding in stainless",
    "Handrails, balustrades and access platforms in stainless",
    "Hygienic equipment for food and pharmaceutical duty",
    "Replacement and repair parts made during a shutdown"
  ],
  "selectionCriteria": [
    {
      "title": "Grade, or the duty that decides it",
      "body": "304 covers dry and mildly corrosive work. Chlorides, acids and welded assemblies move it to 316L; strength plus chlorides moves it to Duplex; high temperature or an aggressive medium moves it to a nickel alloy. If the grade is fixed by your customer's specification, quote it. If it is not, send the medium, its concentration and the design temperature and let the grade follow from those."
    },
    {
      "title": "Form, dimension and the tolerance that matters",
      "body": "Every form has several dimensions, and rarely more than one of them is critical. Say which: outside diameter, wall, bar diameter, flat-bar width and thickness, or cut length. Say whether the figure is finished size or carries machining allowance. A tolerance stated once at RFQ costs nothing; a tolerance discovered at goods-in costs a delivery."
    },
    {
      "title": "Seamless or welded, and to which standard",
      "body": "Welded tube made and tested to a recognised standard covers a large share of duties at a lower price, and both constructions sit inside the same product standard — ASTM A312 covers each. They are not automatically interchangeable: pressure design applies a lower weld joint quality factor to a welded seam unless that seam is additionally examined, and higher pressure, some sour and cyclic service and plenty of customer specifications call for seamless outright. Name the standard — ASTM A312, A213, EN 10216-5 or EN 10217-7 — and construction, testing and tolerance class are settled in one line."
    },
    {
      "title": "Surface condition and certificate level",
      "body": "The starting surface decides what the finishing work costs. Pickled or bright-annealed tube and hot-rolled, cold-drawn, peeled or ground bar are not interchangeable once a hygienic or polished finish is required. State the surface with the certificate level — EN 10204 3.1 is the usual level and is issued with the material, not added to it afterwards."
    }
  ],
  "faq": [
    {
      "q": "What is the difference between seamless and welded tube?",
      "a": "Seamless tube is formed from a solid billet and has no longitudinal weld. Welded tube is formed from strip and welded along the seam, often cold-drawn afterwards. Both are made and tested to their own standards — ASTM A312 covers both constructions — and for a large share of duties the welded grade is accepted at a lower price. It is not a blanket equivalence: pressure design applies a lower weld joint quality factor to the seam unless it is additionally examined, and seamless is specified outright for higher pressure, certain sour or cyclic service, and wherever a customer specification requires it."
    },
    {
      "q": "Should I specify 304, 316L or Duplex?",
      "a": "304 for dry and mildly corrosive work. 316L where chlorides are present, and the low-carbon grade wherever the part is welded and cannot be solution annealed afterwards. Duplex 1.4462 where chloride resistance has to come with roughly double the minimum yield strength listed for 316L in the EN 10088 tables, which often lets you drop a wall thickness. Send the medium, the concentration and the temperature; the grade is a consequence of those, not a preference."
    },
    {
      "q": "Can you supply cut to length?",
      "a": "Yes. Give the cut length, the quantity per length and the tolerance you need on it — a saw cut and a machined face are different things and priced differently. Marking is transferred to each cut piece, so a bar that leaves as one length and arrives as six is still six traceable pieces."
    },
    {
      "q": "Do you supply material certificates?",
      "a": "EN 10204 3.1 on request: issued by the mill's own inspection representative, independent of the production department, with test results on the material delivered and traceable to the heat. A 3.2 certificate — the same document additionally countersigned by an inspector acting for you or designated by regulation — by arrangement. Ask for the level at RFQ: a certificate is issued with the material, and adding it after the material has shipped is rarely possible."
    },
    {
      "q": "What tolerances apply to the dimensions on this page?",
      "a": "The product standard sets them — ASTM A312 and EN 10216-5 for tube, EN 10088-3 and ASTM A276 for bar. If your part needs tighter than the standard, say which dimension and by how much. That either moves you to a different delivery condition, such as cold-drawn, peeled or ground bar, or it is handled with machining allowance."
    },
    {
      "q": "Which surface condition should I ask for?",
      "a": "It depends on what happens after us. Pickled tube is the matt grey standard after annealing; bright annealed is smoother and the usual choice where the bore stays in contact with the product, as in hygienic and instrument lines. Bar runs hot rolled, cold drawn, peeled or ground, in roughly that order of surface quality and tolerance. If the part is to be polished, passivated or run in hygienic service, say so — the starting surface decides most of that cost."
    },
    {
      "q": "Do you deliver from stock, and how fast?",
      "a": "We do not publish a stock list, because a published list is out of date the day after it is written. Common forms in 304 and 316L are widely available commercial material, and the position for your exact form, grade and dimension is confirmed at quotation. Higher alloys are sourced per order. If a shutdown date depends on it, mark the RFQ urgent and we plan around the window."
    },
    {
      "q": "What data do you need for a quotation?",
      "a": "Form, grade or the duty that decides it, the dimensions with the tolerance that matters, cut length and quantity, the product standard if your specification names one, the surface condition and the certificate level. A drawing or a marked-up spec extract answers most of that at once, and it removes a round of questions before you get a price."
    }
  ],
  "relatedProducts": [
    "https://averinox.com/products/woven-mesh/"
  ],
  "role": [
    "manufacturer",
    "supplier"
  ],
  "manufacturer": {
    "name": "Averinox B.V.",
    "url": "https://averinox.com/",
    "productionModel": "own specification, produced at contracted partner plants"
  },
  "supplier": {
    "name": "Averinox B.V.",
    "url": "https://averinox.com/",
    "email": "mail@averinox.com",
    "address": "Rode Ring 49 M, 1566 HR Assendelft, NL",
    "areaServed": "Europe",
    "foundingDate": "2001-06-01",
    "support": "Business hours Mon–Fri 08:00–18:00 Europe/Amsterdam (CET/CEST); urgent breakdowns by arrangement"
  },
  "rfq": {
    "email": "mail@averinox.com",
    "instructions": "Subject: RFQ Stainless & alloy tube and bar (AVX-1804). Include material, rating/aperture, dimensions, quantity and urgency."
  }
}