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These threaded rods are manufactured to ASTM A320 specifications in grades L7, L7M and B8M, designed for low-temperature and cryogenic applications where toughness and resistance to brittle fracture are critical. Supplied in stainless steel and alloy steel, they are available with a black or plain finish. Standard sizes include 1/4"-20 and M6x1.0, with custom threading options on request. Samples are provided free of charge when in stock, allowing buyers to verify dimensional accuracy and material finish before bulk orders.
ASTM A320 L7 and L7M rods are typically produced from chromium-molybdenum alloy steel, while B8M is a stainless steel variant, often 304 or 316, selected for corrosion resistance in aggressive environments. The alloy steel grades are quenched and tempered to meet the standard’s mechanical properties, including tensile strength and hardness typical for low-temperature service. Surface finishes such as black oxide are applied to enhance durability, though additional coatings like zinc or HDG can be specified for added protection.
These rods are used in pressure vessel assemblies, flange connections and structural joints in oil and gas, petrochemical and power generation industries. Buyers typically source them in bulk for large-scale projects, with packaging options including cartons sized 36x24x16 cm or 36x24x12 cm, and standard Euro pallets of 110x80x90 cm. Lead time is 7 to 15 working days, depending on order volume and customization. The port of shipment is Ningbo, simplifying logistics for importers in Asia and beyond.
| Standard | ASTM A320 |
| Grades | L7, L7M, B8M |
| Material | Stainless steel, alloy steel (chromium-molybdenum typical) |
| Finish | Black, plain |
| Size Range | 1/4"-20, M6x1.0 (custom sizes available) |
| Tensile Strength (typical for L7/L7M) | 900 MPa minimum |
| Yield Strength (typical for L7/L7M) | 725 MPa minimum |
| Hardness (typical for L7/L7M) | 22-32 HRC |
| Thread Type | UNRC (coarse) or UNRF (fine) for imperial, metric coarse/fine as per order |
| Packaging | Carton: 36x24x16 cm or 36x24x12 cm; Pallet: 110x80x90 cm (Euro standard) |
| Port of Shipment | Ningbo, China |
Ningbo Yongbiao International Business Co., Ltd is based in Jiulonghu Town, Zhenhai District, Ningbo, Zhejiang Province, China. The company operates from postal code 315200 and specializes in the supply of fasteners, including high-specification threaded rods for industrial applications. Its location in Ningbo, a major port city, provides efficient access to global shipping routes, facilitating timely exports.
The supplier’s profile indicates a harbor trust tier, reflecting a basic level of verification. While the response rate and average response hours are currently unrecorded, the company states it can provide samples free of charge if stock is available. This allows potential buyers to assess quality and specifications before committing to larger orders. The focus remains on delivering standardized products with options for customization in size and finish.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Before ordering, verify the material grade and heat treatment process to ensure compliance with ASTM A320. Request the supplier’s Material Test Reports (MTRs) for each batch, as these documents confirm the chemical composition and mechanical properties. For cryogenic applications, also check that the rods have undergone the required low-temperature impact testing, typically at -46°C for L7/L7M or -196°C for B8M.
Confirm logistics details such as packaging, labeling, and port of shipment. Ningbo is the specified port, so coordinate with your freight forwarder to arrange pickup and shipping via sea or air. Clarify Incoterms (e.g., FOB Ningbo) and payment terms upfront to avoid delays. Lead time is 7 to 15 working days, but this may extend for custom sizes or large volumes, so plan accordingly.
Quality checks should include dimensional verification, thread gauge testing, and visual inspection for surface defects or inconsistencies in finish. For critical applications, consider third-party inspection at the supplier’s facility or upon arrival at your port. Ensure all documentation, including MTRs and certificates of origin, is complete and accurate to facilitate customs clearance and traceability.
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When sourcing Astm A320 Grade L7, L7m,B8m Threaded Rods for your business, securing the right balance of quality and cost is essential. Ningbo Yongbiao International Business Co., Ltd, a supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $0.5/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Nuts sector with strong demand from importing countries worldwide.
Importing Astm A320 Grade L7, L7m,B requires careful attention to shipping logistics, customs compliance, and secure payment terms. Ningbo Yongbiao International Business Co., Ltd offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. 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 import export marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Astm A320 Grade L7, L7m,B for business registration and quality documents before ordering. 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 manufacturers and exporters across 200+ countries. Explore similar products in the Nuts category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Importing Astm A320 Grade L7, L7m,B 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 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Astm A320 Grade L7, L7m,B8m Threaded Rods from Ningbo Yongbiao International Business Co., Ltd is $0.5/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 Ningbo Yongbiao International Business Co., Ltd through EximNext.
The supplier, Ningbo Yongbiao International Business Co., Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Astm A320 Grade L7, L7m,B. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
The HS Code classification for Astm A320 Grade L7, L7m,B8m Threaded Rods depends on the specific grade and form. Contact Ningbo Yongbiao International Business Co., Ltd through EximNext for the exact HS Code and customs documentation required for your destination country.
To import Astm A320 Grade L7, L7m,B from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Ningbo Yongbiao International Business Co., Ltd. Ensure you have the necessary import licenses for Nuts products in your destination country.
Open the Ningbo Yongbiao International Business Co., Ltd company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Ningbo Yongbiao International Business Co., Ltd through EximNext.
Ningbo Yongbiao International Business Co., Ltd offers Astm A320 Grade L7, L7m,B with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Astm A320 Grade L7, L7m,B is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Ningbo Yongbiao International Business Co., Ltd through our platform.
Ningbo Yongbiao International Business Co., Ltd maintains international quality certifications. These ensure that the Astm A320 Grade L7, L7m,B meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Ningbo Yongbiao International Business Co., Ltd will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
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 Ningbo Yongbiao International Business Co., Ltd.
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