Import Astm/Aisi Standard Alloy Round Bar — Buy in wholesale FOB from Supplier in China
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ASTM/AISI Standard Alloy Round Bar
The ASTM/AISI Standard Alloy Round Bar from Big Co., Ltd. is a hot-rolled or forged Chrome-Molybdenum alloy steel product, available in diameters from 10mm to 500mm and lengths up to 6 meters. It adheres to AISI, ASTM, BS, DIN, GB, and JIS standards, making it suitable for high-stress applications where reliability is critical. The 4140/SCM440 grade composition ensures a balance of strength, toughness, and wear resistance, ideal for industrial fabrication and engineering projects.
This alloy steel round bar is typically supplied in a hot-rolled finish, which enhances its mechanical properties and surface quality. Standard industry grades for Chrome-Molybdenum bars include AISI 4130, 4140, and 4340, with tensile strengths typically ranging from 655 MPa to 900 MPa depending on heat treatment. The material is often used in machinery manufacturing, automotive components, construction equipment, and oil and gas pipelines due to its ability to withstand heavy loads and cyclic stress.
Buyers of this product are often manufacturers of heavy machinery, construction equipment, or automotive parts. The bars are sourced from established mills in mainland China and shipped in bulk, with packaging typically consisting of bundled rods or palletized coils. Lead times and MOQs vary by mill and order size, so confirmation with the supplier is required. This product is a cost-effective solution for buyers seeking durable alloy steel materials for high-impact industrial applications.
| Material Grade | Chrome-Molybdenum (4140 / SCM440) |
| Standards Compliance | AISI, ASTM, BS, DIN, GB, JIS |
| Diameter Range | 10mm to 500mm |
| Length | Up to 6 meters |
| Form | Hot-rolled or forged round bar |
| Typical Tensile Strength | 655 MPa to 900 MPa (heat-treated) |
| Typical Yield Strength | 415 MPa to 750 MPa (heat-treated) |
| Typical Hardness (Brinell) | 197 to 262 HB |
| Typical Elongation | 15% to 25% in 50mm |
| Typical Packaging | Bundled rods or palletized coils |
Big Co., Ltd. is based in Tongzhou District, Beijing, China, and operates as a supplier of alloy steel products. The company holds a 'harbor' trust tier, indicating a baseline level of verification in the marketplace. Its address is confirmed as 101100, Beijing, though additional operational details such as production capacity or certifications are not explicitly stated in the available data.
The supplier’s profile does not provide specific information on response rates, average response times, or historical performance metrics. Buyers are advised to contact Big Co., Ltd. directly to confirm its current operational status, trade terms, and quality assurance processes. The absence of published certifications or client references means due diligence is essential before placing orders.
ASTM AISI standard alloy round bar is a versatile hot-rolled or forged steel product available in diameters from 10mm to 500mm and lengths up to 6 meters. Complying with AISI, ASTM, BS, DIN, GB, and JIS standards, these bars are widely used in machinery manufacturing, automotive components, construction equipment, and oil and gas pipelines. Sourced from established mills in mainland China, they offer a cost-effective solution for buyers seeking reliable alloy steel materials for industrial fabrication and engineering projects.
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Sourcing ASTM/AISI Standard Alloy Round Bar from Big Co., Ltd. - China Import Guide
Before ordering ASTM/AISI Standard Alloy Round Bar from Big Co., Ltd., verify the mill source and confirm that the material meets the required standards for your application. Request mill test certificates (MTCs) to ensure the chemical composition and mechanical properties align with AISI 4140 or SCM440 specifications. Additionally, check if the supplier provides third-party inspection reports for quality assurance.
Confirm logistics details such as packaging, labeling, and shipping methods. Alloy round bars are typically bundled or palletized, but custom packaging may be required for specific applications. Discuss lead times, which can vary based on mill schedules and order size. Incoterms such as FOB or CIF should be clarified, along with preferred payment methods like L/C or T/T.
Quality checks are critical for alloy steel products. Inspect the bars for surface defects, dimensional accuracy, and straightness upon receipt. Request a pre-shipment inspection if possible, and ensure all documentation, including MTCs and compliance certificates, is provided. For high-precision applications, consider additional testing such as ultrasonic or magnetic particle inspection to detect internal or surface flaws.
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30 suppliersBuy Astm/Aisi Standard Alloy in Bulk — Verified Supplier in China
When sourcing Astm/Aisi Standard Alloy Round Bar for your business, securing the right balance of quality and cost is essential. Big Co., Ltd., a verified supplier based in China, offers this product with key specifications including AISI 4140, 4340, 8620 / Alloy Steel Round Bar, Chromium-Molybdenum (Cr-Mo) alloy; Carbon 0.37%-0.45% (grade dependent), and OD: 10mm - 500mm; Length: 1000mm - 6000mm. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $100/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7228.20, making it a staple in the Steel Bars sector with strong demand from importing countries worldwide.
Astm/Aisi Standard Alloy Specifications, Trade Terms & Pricing
Importing Astm/Aisi Standard Alloy requires careful attention to shipping logistics, customs compliance, and secure payment terms. Big Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 7228.20 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading online B2B marketplace designed to make cross-border trade secure and efficient.
About Big Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Astm/Aisi Standard Alloy has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Steel Bars category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import Astm/Aisi Standard Alloy — Shipping, Logistics & Customs
Importing Astm/Aisi Standard Alloy requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 7228.20 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Astm/Aisi Standard Alloy
What is the wholesale price of Astm/Aisi Standard Alloy Round Bar?
The current listed wholesale price for Astm/Aisi Standard Alloy Round Bar from Big Co., Ltd. is $100/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Big Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Astm/Aisi Standard Alloy?
The supplier, Big Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Astm/Aisi Standard Alloy. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Astm/Aisi Standard Alloy Round Bar?
For international shipping and customs clearance, Astm/Aisi Standard Alloy Round Bar is classified under HS Code 7228.20. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Astm/Aisi Standard Alloy from China?
To import Astm/Aisi Standard Alloy from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Big Co., Ltd.. Ensure you have the necessary import licenses for Steel Bars products in your destination country.
Is Big Co., Ltd. a verified supplier?
Yes, Big Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Astm/Aisi Standard Alloy Round Bar?
The key specifications for Astm/Aisi Standard Alloy Round Bar supplied by Big Co., Ltd. include AISI 4140, 4340, 8620 / Alloy Steel Round Bar, Chromium-Molybdenum (Cr-Mo) alloy; Carbon 0.37%-0.45% (grade dependent), and OD: 10mm - 500mm; Length: 1000mm - 6000mm. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Astm/Aisi Standard Alloy?
Big Co., Ltd. offers Astm/Aisi Standard Alloy with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Astm/Aisi Standard Alloy the most?
Astm/Aisi Standard Alloy is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Big Co., Ltd. through our platform.
What certifications does this Astm/Aisi Standard Alloy supplier hold?
Big Co., Ltd. maintains international quality certifications. These ensure that the Astm/Aisi Standard Alloy meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Astm/Aisi Standard Alloy Round Bar on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Big Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Big Co., Ltd..
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