A106 Gr.B Carbon Steel Round Bar
Our mill direct production network supplies premium-grade ASTM A106 Grade B seamless carbon steel round bars engineered for structural pressure, high-stress machining, and thermal structural components. We guarantee exact diameter straightness limits and verified uniform grain stability 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 structural carbon rods that crack under heavy machining, fail critical site inspections, and ruin your career reputation? Secure your mill-verified testing records instantly.
PRODUCT DETAILS
Carbon Steel Round Bar Three-Standard Cross Matrix
| American Standard (ASTM) | European Standard (EN) | Japanese / Chinese Equivalent (JIS/GB) | Diameter & Condition Scope | Application / Pressure Limits |
|---|---|---|---|---|
| ASTM A105 | C21 / 1.0432 Forged | SF490A / 20Mn Forging Grade | 10mm – 400mm / Forged Black Bar | Ambient High-Temp Flanges/Valves |
| ASTM A106 Grade B | P265GH / 1.0425 Pressure | STPT410 / 20# Seamless Structural Solid | 8mm – 350mm / Hot Rolled, Smooth Finished | Severe High-Temperature & Pressure |
| ASTM A350 LF2 | P285NH / 1.0487 Low-Temp | SFL2 / 16Mn Forged Structural | 12mm – 300mm / Normalized Finish | Low-Temperature Impact Hardness |
Technical QA/QC Verification
• EN 10204 3.1 Material Test Certificates (MTC) & Mechanical Profiles: All incoming allocations are paired with verified original MTC tracking data sheets, itemizing comprehensive heat numbers, mechanical yield-stress boundaries, elongation ratios, and chemical composition data. Fully aligned to accommodate independent third-party inspection reviews 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 Cradle Palletization & Timber-Choked Chocking: Finished bundles are arranged inside heavy iron alignment frame cradles or robust wooden end-boxes to completely eliminate linear bending or shifting during terminal crane operations. The total container configuration is cross-braced using heavy steel straps and internal wood block locks to handle high-seas rolling.
• 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.
A106 GrB strength grade 415MPa. ASTM A106Gr. B carbon steel round bar is a kind of low carbon steel widely used in petroleum, chemical and boiler industries. The material has good mechanical properties. Carbon steel round bar for high-temperature operation ASTM A106 GR. B, steel grade: SA106B, Specification: 1/4 ″ – 28 ″, 13.7-711.2mm Steel grade: GRAD B, Standard: ASTM A106 – American Society for Testing and Materials.
Now the common round steel processes are hot rolling, forging and cold drawing. The steel quality and application scope of these three processing modes will also have some differences. For example, the specification of hot rolling is generally 5.5-250MM, and the appropriate steel can be selected according to the actual needs.
Generally, parts are manufactured by machinery or used as seamless steel pipe blanks, and steel is also used in some building construction.
Round steel has relatively high strength, high hardenability and very good toughness, so its pressure bearing capacity is also guaranteed. Even if it is used at high temperature, the creep strength is high and the durability is also guaranteed.
A106 Gr. B Steel Specifications
| Item | Description |
|---|---|
| Material | A106 Gr. B |
| Thickness | 0.1mm-300mm or as required |
| Standard | AISI, ASTM, DIN, BS, JIS, GB, SUS, EN, etc. |
| Technique | Hot rolled, cold rolled |
| Surface Treatment | Clean, blasting and painting according to customer requirement |
| Thickness tolerance | ±0.1mm |
| Application | It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts. |
| 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 Carbon Steel Nesting Optimization Analysis & Pressure Structural Drawing BOM Audit
Designing industrial structural shafts, machine tool gears, high-pressure processing lines, or replying to a high-volume global carbon steel procurement tender? Upload your target rod lengths, precision engineering 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.
