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China, Chinese Stainless Steel Round Bar 1/1.5/2/2.5/3/4/4.5/5/7/20/25/30mm AISI 304 316 Stainless Steel Rod1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Steel ProductsSteel Round BarAISI SS304 Round SteelStainless Steel Round Bar
Jinan Zunkai Materials Co., Ltd.
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Product DescriptionProduct DescriptionThe stainless steel round bar is a circular profile crafted from stainless steel through hot rolling, forging, or cold drawing. Its notable advantage is the blend of high strength and corrosion resistance. The standard shape and adaptable processing properties make it ideal for diverse applications demanding corrosion resistance and strength, including industrial manufacturing, architectural decoration, and medical equipment.The stainless steel bars and rods are available in various sizes ranging from 3mm to 76.2mm, we are also able to provide a cutting service to meet your individual requirements. And we have a variety of materials for you to choose from,such as201,304,316,316l,904l,310s,309s,321,2205,2507 and more.Material Specification include, but are not limited to, ASTM, AMS, ASME & QQ-A.StandardASTM A479,ASTM A276,ASTM A484, ASTM A582,ASME SA276, ASME SA484, GB/T1220, GB4226, etc.Material301, 304, 304L, 309S, 321, 316, 316L, 317, 317L, 310S, 201,202321, 329, 347, 347H 201, 202, 410, 420, 430, S20100, S20200, S30100, S30400, S30403, S30908, S31008, S31600, S31635, etc.Length2m, 5.8m, 6m, or as required.SurfaceBlack, peeled, polishing, bright, sand blast, hair line, etc.StandardAISI, ASTM, GB,BS,EN,JIS,DINApplicationWidely used in petroleum,foodstuff,chemical industry,construction, electric power,nuclear,energy,machinery,biotechnology,papermaking,shipbuilding,boiler fields.Heat treatment:Normalized / Annealed / Quenched / temperedCertificateISO9001,CE or as per customer.Payment TermsT/T,L/C at sight 30%T/T in advance,balance 70% should be paid after receiving the copy of B/LPackingStandard Seaworthy Package or according to customer's requirementsOther StandardStructural steels are steels that meet specific strength and formability grades. Formability is expressed as elongation after the break of tensile test. Structural steels are commonly used for purposes such as load bearing, where the strength of the steel is an important design criterion. Alloyed structural steel This kind of steel, with suitable hardenability, after appropriate metal heat treatment, the microstructure is homogeneous sorbite, bainite or very fine pearlite, thus has higher tensile strength and showed (around 0.85), high toughness and fatigue strength, and low ductile to brittle transition temperature, can be used in the manufacture of section size larger machine parts.Internation Steel GradeCHINA (GB)US (AISI)JAPAN (JIS)GERMANY (W-NR)20CrS120SCR4201.702740CrS140Scr4401.703520CrMo4118SCM4401.726535CrMo41352234SCM43542CrMo41402244SCM44038CrMoAl-SACM6451.850920CrMnTi--1.8401Our Stainless Steel bar Main production technology1. Structure and Form: The core is a "circular cross-section + standardized specifications."Cross-section and Dimensions: The main body has a uniform circular cross-section, with a diameter range of 0.8mm-500mm (common industrial specifications are 5mm-100mm).Surface Condition: Based on processing accuracy and appearance requirements, the surface is divided into three:Hot-rolled surface (No. 1): The surface is rough (Ra ≈ 5-10μm), with some mill scale and a dull finish. It is primarily used for structural parts where appearance is not a priority (such as machinery bases and equipment brackets).Cold-drawn surface (Cold Drawn): The surface is smooth (Ra ≈ 0.8-3.2μm), with high dimensional accuracy (diameter tolerance ±0.02mm), and is free of mill scale. It is used for high-precision components (such as mechanical shafts and fasteners).Polished surface (Polished): Mechanically polished to a bright finish (e.g., mirror polish Ra ≤ 0.2μm, matte polish Ra ≈ 0.4-0.8μm). It is used for decorative or hygienic applications (such as medical equipment and food processing equipment). 2. Core Production Process: Determines Precision and PerformanceDifferent processes correspond to different precision and strength requirements. The mainstream processes are categorized into three types:Hot Rolling: Stainless steel billets are heated to 1000-1200°C and rolled into round steel using a rolling mill. This process offers high production capacity and low cost.Cold Drawing: Hot-rolled round steel is stretched through cold drawing dies at room temperature. This process offers high dimensional accuracy and a smooth surface. Cold working also increases material strength (15%-30% higher than hot rolling).Forging: Stainless steel billets are forged into shape using a forging hammer or press. This process is used for heavy-load, impact-resistant applications (such as large mechanical spindles).ApplicationsProfessional Uses of Stainless Steel Round BarsStainless steel round bars are used professionally for three core properties: corrosion resistance, high strength, easy machinability. They apply to high-precision fields like machinery, chemical engineering, construction, healthcare.1. Mechanical ManufacturingMainly for key load-bearing/power-transmitting parts.Shafts: Motor shafts, machine tool spindles, reducer shafts. 304, 316 (corrosion/fatigue resistance).Fasteners: High-precision bolts/nuts/screws. For food machinery/marine use (avoids rust).Blanks: 400-series (410, 430) for high demand; heat treatment boosts hardness/wear resistance.2. Petroleum, Chemical & EnergyNeeds high pressure/acid-alkali resistance; round bars are core materials.Pipeline/valve parts: Flanges, valve cores, joints. 316L (low-carbon, resists crude oil/acid-alkali).Pressure vessels: Support/stirring shafts (reaction kettles, heat exchangers). Meets GB/T 14976 (safe pressure).New energy: PV bracket connectors, wind turbine rods. Resists humidity/salt spray.3. Construction & DecorationRequires structure, appearance, durability; polished/brushed bars used.Supports: Curtain wall keels, railing columns. 304 (strength + outdoor rust resistance).Decorations: Stair handrails, sculpture frames. Surface treatments (mirror, matte) for design.Municipal: Manhole covers, lamp embedded parts. Resists rain/soil corrosion; 316L in some cases.4. Medical & Food IndustriesNeeds high purity, biocompatibility, easy cleaning; no harmful leaching.Medical gear: Surgical handles, implant parts (e.g., joint shafts). 316L+; surface Ra ≤ 0.8 μm.Food equipment: Pipes, paddles, tank liners. Meets FDA (avoids food metal contamination).5. Aerospace & Precision InstrumentsHigh-value fields; strict on composition, accuracy (tolerance IT6-IT8), mechanics.Aerospace parts: Landing gear connectors, engine guide shafts. 17-4PH (high strength + light weight).Precision gear: Sensor housings, instrument shafts. Low deformation, stable; 304L (low-carbon) mainly.
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