Import Round Bar Aisi 4140 Steel Pipe — Buy in wholesale FOB from Supplier in China
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ASTM/AISI Standard Alloy Round Bar AISI 4140 is a chromium molybdenum alloy steel specification widely used in the oil and gas industry. Similar to grade AISI 4130 but with a slightly higher carbon content. American Iron and Steel Institute (AISI 4140) is a member of the low alloy tool steel family characterized by small quantities of trace elements added to an otherwise simple steel. These trace elements, when compared with more simple steel such as 1040, improves the characteristics of 4140 . However, because 4140 remains relatively simple, it is used in a wider range of applications than more specialized tool steels like the D or S series of steel. Specifications · Grade: Alloy steel · Standard: AISI, ASTM, BS, DIN, GB, JIS · OD:10-500mm · Thickness: Max:800mm · Width: 205mm~2300mm · Length: 1000mm~6000mm · Place of Origin: China (Mainland) · Model Number: 1.7220 / SCM430 / 30CrMo4 / 4130 ; 4140/42CrMo4/1.7225; En24 34CrNiMo6 1.6582 4340. · Application: Mould steel · Technique: Forged · Special Use: Mold Steel ,Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears. · Shape: Round bars/Flat bar/Plate · Technology: Hot Rolled/Forged/Clod Draw · Heat treatment: Annealing/Q+T · Surface treatment:Black/Peeling/Polishing/Machined · Delivery condition: Hot rolled or forged/ Peeled or black surface/annealed or QT · Customer's logo: Available · Test: SGS/UT100%/Elements testing · Certificate: ISO/Mill certificate · Experience: Ten years manufacturer experience General Scope One of the most popular alloys for Oil Field applications, a high proportion of which is in Tubular form for downhole tools and accessories.
| HS Code | 7228.70 |
| Material | Chromium Molybdenum Alloy Steel AISI 4140 |
| Grade/Type | AISI 4140 / ASTM A29 / 42CrMo (Chinese Equivalent) |
| Purity/Composition | C: 0.38-0.43%, Cr: 0.80-1.10%, Mo: 0.15-0.25%, Mn: 0.75-1.00%, Si: 0.15-0.30% |
| Size/Dimensions | Diameter 10mm - 300mm; Length 3m - 6m (or cut-to-length) |
| Standard | ASTM A29, A322, A519 / AISI 4140 / DIN 42CrMo / EN 10083 |
| Application | Oil and gas drilling components, automotive parts, fasteners, axles, machinery shafts, spindles, hydraulic cylinders |
| Packaging | Bundled with steel straps, rust preventive coating, paper interleaving, seaworthy export packaging |
| Origin | China, India, Germany, Japan, USA (varies by supplier) |
AISI 4140 round bar is a chromium molybdenum alloy steel bar widely specified in the oil and gas industry for its high strength and toughness. It is similar to AISI 4130 but with slightly higher carbon content, making it ideal for shafts, fasteners, and drill collar components under high stress. This alloy steel bar meets ASTM and AISI standards and is traded globally in diameters from 12mm to 300mm, commonly supplied in bundles or loose bundles for industrial export and distribution.
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Sourcing Round Bar AISI 4140 Steel Pipe from China
Round Bar AISI 4140 Steel Pipe is offered by Big Co., Ltd., a Supplier based in China, in wholesale quantities for importers, distributors, and trade buyers. Contact the supplier to request pricing, minimum order quantity, and shipping terms for your destination.
When importing Round Bar AISI 4140 Steel, confirm trade terms such as FOB or CIF, packaging, and any certification or documentation you need directly with the supplier before placing a bulk order.
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30 suppliersBuy Round Bar Aisi 4140 Steel in Bulk — Verified Supplier in China
When sourcing Round Bar Aisi 4140 Steel Pipe 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 / ASTM A29 / 42CrMo (Chinese Equivalent), C: 0.38-0.43%, Cr: 0.80-1.10%, Mo: 0.15-0.25%, Mn: 0.75-1.00%, Si: 0.15-0.30%, and Diameter 10mm - 300mm; Length 3m - 6m (or cut-to-length). 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 7228.70, making it a staple in the Steel Pipes sector with strong demand from importing countries worldwide.
Round Bar Aisi 4140 Steel Specifications, Trade Terms & Pricing
Importing Round Bar Aisi 4140 Steel 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 7228.70 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 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 Round Bar Aisi 4140 Steel 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 Pipes category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Import Round Bar Aisi 4140 Steel — Shipping, Logistics & Customs
Importing Round Bar Aisi 4140 Steel 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 7228.70 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 Round Bar Aisi 4140 Steel
What is the wholesale price of Round Bar Aisi 4140 Steel Pipe?
The current listed wholesale price for Round Bar Aisi 4140 Steel Pipe 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 Round Bar Aisi 4140 Steel?
The supplier, Big Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Round Bar Aisi 4140 Steel. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Round Bar Aisi 4140 Steel Pipe?
For international shipping and customs clearance, Round Bar Aisi 4140 Steel Pipe is classified under HS Code 7228.70. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Round Bar Aisi 4140 Steel from China?
To import Round Bar Aisi 4140 Steel from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Big Co., Ltd.. Ensure you have the necessary import licenses for Steel Pipes 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 Round Bar Aisi 4140 Steel Pipe?
The key specifications for Round Bar Aisi 4140 Steel Pipe supplied by Big Co., Ltd. include AISI 4140 / ASTM A29 / 42CrMo (Chinese Equivalent), C: 0.38-0.43%, Cr: 0.80-1.10%, Mo: 0.15-0.25%, Mn: 0.75-1.00%, Si: 0.15-0.30%, and Diameter 10mm - 300mm; Length 3m - 6m (or cut-to-length). 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 Round Bar Aisi 4140 Steel?
Big Co., Ltd. offers Round Bar Aisi 4140 Steel with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Round Bar Aisi 4140 Steel the most?
Round Bar Aisi 4140 Steel 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 Round Bar Aisi 4140 Steel supplier hold?
Big Co., Ltd. maintains international quality certifications. These ensure that the Round Bar Aisi 4140 Steel meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Round Bar Aisi 4140 Steel Pipe 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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