A179 Carbon Steel Round Bar
Our mill direct production network supplies premium-grade ASTM A179 seamless cold-drawn carbon steel round bars explicitly engineered for structural thermal components, high-pressure heat exchangers, and condenser core processing. We guarantee exact microstructural uniformity, critical dimensional straightness, and cross-sectional density backed by our direct 2-Hour Rapid Quote technical protocol.
Tired of waiting days for price quotes while your strict project bidding deadline runs out? Terrified of low-grade thermal steel rods that crack under cold-forming processes, fail destructive flattening site tests, and ruin your professional reputation? Secure your mill-verified testing records instantly.
PRODUCT DETAILS
Thermal & Pressure Carbon Steel Round Bar Three-Standard Cross Matrix
| American Standard (ASTM Spec) | European Standard (EN 10216) | Japanese / Chinese Equivalent (JIS/GB) | Diameter & Processing Scope | Thermal Performance Focus |
|---|---|---|---|---|
| ASTM A106 Grade B | P265GH / 1.0425 Pressure | STPT410 / 20# Seamless Solid | 8mm – 350mm / Hot Rolled | High-Temp Structural Pressure Line |
| ASTM A179 (Low-Carbon Cold Drawn) | P195GH / 1.0348 Thermal Grade | STB340 / 10# Custom Heat Exchanger Solid | 6mm – 250mm / Cold Drawn & Annealed | Extreme Thermal Exchange & Condenser Core |
| ASTM A192 | P235GH / 1.0345 Boiler | STB410 / 20G High-Pressure Solid | 10mm – 300mm / Bright Finished | High-Pressure Boiler Drum Components |
Technical QA/QC Verification
• EN 10204 3.1 Material Test Certificates (MTC) & Mechanical Profiles: All commercial orders are accompanied by verified original MTC tracking sheets, itemizing comprehensive heat codes, tensile strengths, yield boundaries, and chemical composition thresholds. Fully aligned to accommodate independent third-party inspection audits from SGS, Bureau Veritas, or Intertek.
• Sovereign Capital Security Framework: To insulate commercial engineering contractors and procurement firms from international currency changes and delivery scheduling anxieties, we execute all high-volume productions under 100% Irrevocable Letters of Credit (L/C) at sight financial protocols.
Internal Protection & Ocean Logistics
• Reinforced Rigid Iron Cradle Palletization & Cross-Timber Bracing: Finished bundles are arranged inside robust iron frame chassis or heavy solid wooden end-boxes to eliminate linear bending or shifting during crane terminal processing. The container lot is heavily cross-braced with continuous steel tension straps and interlocked timber chocks.
• Complimentary 14-21 Days Extended Destination Port Demurrage Buffer: SXY Steel Group proactively secures pre-cleared, extended 14 to 21 days of container free-time demurrage parameters on your ocean Bill of Lading, giving your customs agent an open window to handle processing without incurring costly storage fines.
A179 is an ASTM standard specification for seamless cold-drawn low-carbon steel tubes for heat exchangers and condensers. It is not a standard grade for “round bar”. Round bars of similar low-carbon composition are typically supplied under standards such as ASTM A29 for general purpose.
ASTM A179 / ASME SA179 Seamless Tubes Specifications
| Parameter | Description |
|---|---|
| Material | Low-Carbon Steel (for cold-drawn tube application). Note: “A179” is a standard for seamless cold-drawn low-carbon steel tubes, not a plate/round bar material designation. |
| Thickness | For Tube Wall Thickness: Typically 0.83mm (0.0325 in) to 12.7mm (0.500 in) as per standard. The stated range (0.1mm-300mm) is incorrect for this product. |
| Standard | ASTM A179 / ASME SA179 |
| Technique | Cold Drawn, Seamless (for tubes). “Hot rolled, cold rolled” is incorrect for ASTM A179 tubes. |
| Surface Treatment | Clean, blasting and painting according to customer requirement. (Note: Standard finish is bare/cold drawn.) |
| Thickness tolerance | Per ASTM A179, wall thickness tolerance is +20%, -0% of the nominal wall for most sizes. The stated ±0.1mm is incorrect. |
| Application | Seamless cold-drawn low-carbon steel tubes for heat exchangers, condensers, and similar heat transfer equipment. The description related to automotive structural parts is incorrect for ASTM A179. |
| Shipment time | Within 7-15 workdays after receiving deposit or L/C |
| Export packing | Waterproof paper, and steel strip packed. Standard Export Seaworthy Package. Suit for all kinds of transport,or as required |
| Capacity | 250,000 tons/year |
Round steel belongs to carbon structural steel for construction and machinery, while square steel belongs to carbon structural
steel for machinery. Both of them are simple section steel, and their section shapes are respectively round and square. Low carbon is mainly used for
drawing wire, forging rivets, bolts, nuts and other metal products of raw materials. Medium carbon round steel and square steel
are generally used to make mechanical structural parts.
Packing and shipping
Our company has passed ISO9001 quality management system certification, Our Mill product with CE/EN10204 / ASTM/Classification society certificate/CASO/BIS etc certificate.All the customers give good appreciation to our products.We are glad to be your good partner.
Application Areas
Steel is widely used in steel structure workshops, bridge frames, main structures of high-rise buildings, and infrastructure construction (such as highways, oil and gas pipelines). Its high strength properties ensure load-bearing stability and seismic performance. In ship manufacturing, steel is used to build hull structures, decks, and internal components. Hot-rolled coils rely on their load-bearing capacity to adapt to harsh environments.
Factory workshop
With a commitment to excellence, innovation, and sustainability, the company has established itself as a trusted partner in the international steel industry.After nearly two decades of relentless endeavour, our client base now spans over 110 countries and regions across Europe, the Middle East, South America, and Southeast Asia.
Free Thermal Component Nesting Optimization Analysis & Heat Exchanger Drawing BOM Audit
Designing industrial condenser units, thermal process equipment, pressure vessel flanges, or replying to a high-volume global carbon steel procurement tender? Upload your target rod lengths, precision h-tolerances, cut plans, or raw engineering Bill of Materials (BOM) drawing files below. SXY Steel Group’s engineering department will execute a complete nesting calculation to cut scrap metal losses and safeguard your production budget.
