Grade 4140 L7 B16 B7 Steel Rods for Threaded Rod with Pitch Size

Name: Grade 4140 L7 B16 B7 Steel Rods for Threaded Rod with Pitch Size
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 2177070622

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$1,050.00

2 Tons

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Type

Alloy Steel Bar

Standard

AISI, ASTM, JIS, ASTM A193 B7 B16,ASTM A320 L7

Model NO.

round bar

Technique

Cold Drawn

Application

ASTM A193 B7 B16,ASTM A320 L7

Surface Treatment

Polished

Alloy

Special Use

ASTM A193 B7 B16,ASTM A320 L7

Main Grade

4140 B16 304 316 Steel

Quality Level

B7 L7 B16 B8m

Ready Stock

Yes

Factory Directly

Yes

Transport Package

Anti-Rust Pacaking

Specification

1/2''-4''

Trademark

dajin

Origin

China

Key features

Thread Rolling Ready: Precision cold drawn bars with optimal grain flow for high-speed thread rolling.

Comprehensive MTR Included: Full Material Test Report verifying chemical composition and mechanical properties.

Customizable Lengths: Tailored bar lengths adapted for container loading and specific client fabrication lines.

High Strength Performance: Minimum tensile strength of 125 ksi ensuring durability for high-pressure bolting.

Strict Dimensional Tolerances: Adherence to h9-h11 diameter tolerances minimizing material waste during processing.

Factory Direct Supply: Direct mill access ensuring competitive pricing and stable long-term supply.

Global Export Packaging: Expert anti-rust bundling and moisture-proof packaging for safe long-distance shipping.

Versatile Grade Portfolio: Supply of ASTM A320 L7, B8/B8M, and matching heavy hex nuts for complete assembly.

Company profile

Shandong Dajin Metal Material Co., Ltd.

Shandong, China

Business Type: Manufacturer/FactoryExport Year: 2017-03-04Nearest Port: Qingdao port, Tianjin port, Shanghai portAverage Response Time: ≤6.91hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, FAS, DDP, CPT, FCA, EXW

AI-Powered supplier vetting

SummaryShandong Dajin Metal Material Co., Ltd. is identified as a Chinese manufacturer/factory based in Shandong, with four production lines, stated production capacities for several steel-bar categories, and export activity across multiple regions. It holds ISO 9001 and OHSAS/OHSMS 18001 certifications and states that it can supply multiple international standards and customized steel products. The supplier reports export activity since 2017 and that exports represent 51%–70% of total sales. Evidence supports production scale, certification, customization, and international trading capability. However, the provided information does not sufficiently establish after-sales service processes, innovation capability, or financial credibility. Trade records show named buyers and shipments involving Brazil and Pakistan, but the limited transaction evidence does not establish broad or sustained customer performance.

Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory and operates as Shandong Dajin Metal Material Co., Ltd., a limited company located in Shandong, China. This directly supports its status as a manufacturing supplier rather than only a trading entity.

CertificationsThe supplier reports holding ISO 9001 and OHSAS/OHSMS 18001 management-system certifications. These stated certifications provide explicit evidence of quality-management and occupational health and safety systems, although certificate validity dates and scope are not provided.

Production capacityThe supplier reports four production lines, 11–20 years of total R&D-engineer experience, 11–20 quality-control staff, and substantial stated capacities for steel bar, carbon steel round bar, and cold-drawn steel bar. It also reports ready stock of 1,000–1,500 tons for specified products and exports to multiple global regions, providing explicit evidence of meaningful production and fulfillment capability.

Customization capabilityThe supplier explicitly states that it can provide products to GB, American, German, Japanese, industry, and special steel standards and can offer customized services according to customer requirements. Its listed grades and 5 mm–300 mm size range for certain stocked products further support product configuration flexibility.

Client casesTrade records associate the supplier with named buyers in Brazil and Pakistan and show shipments involving steel-related products through Qingdao, including a recorded transaction count of one for one buyer and two for another. These records provide evidence of actual international customer transactions, but the limited number of documented cases does not establish a broad, long-term, or independently verified customer portfolio.

Product Q&A

Q:Are your B7 steel bars ready for direct thread rolling?

Yes. Our Cold Drawn Qt Steel Round Bars are precision-processed with exact dimensional tolerances and optimal grain flow, making them thread rolling ready for high-speed industrial fastener production. We also control the B7 Pitch Size for Threading to ensure seamless manufacturing.

Q:Do you provide a Material Test Report (MTR) with each shipment?

Absolutely. Every batch of ASTM A193 B7 raw material is delivered with a full MTR (Material Test Report), fully verifying chemical composition, heat number, and mechanical performance (such as tensile strength and hardness).

Q:What surface treatments and export packaging do you offer?

We supply bars in plain finish, or with customized anti-rust oil protection. For export, our Customized length 4140 alloy steel bars are securely bundled, moisture-proofed, and packed to withstand long-distance container shipping to the Middle East, Southeast Asia, and global markets.

Q:Can you supply associated grades alongside B7?

Yes, we provide a comprehensive portfolio of industrial fastener raw materials, including ASTM A320 L7 Low Temperature Studs, ASTM A193 B8 / B8M Stainless Steel, and matching Heavy Hex Nuts (such as Grade 2H) for complete project compatibility.

Q:Do you have ready stock

Yes,in order to get a good properties for the final QT steel bar,the raw materail must be keep in our warehouse more than one month.So we alway keep 3000tons stocks.