What certifications does the factory have?

Our factory holds ISO9001, ISO/TS16949, CE Mark, and JIS/KS certifications, ensuring high manufacturing standards.

High-Strength AISI 4140 Cold Drawn Steel Bar for Shafts

Name: High-Strength AISI 4140 Cold Drawn Steel Bar for Shafts
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 738123342

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$700.00-900.00

10 Tons

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Type

Round

Standard

AISI, ASTM, DIN, JIS

Model NO.

steel bar

Composition

Ferrous Steel Scrap

Technique

Cold Drawn

Shape

Bar

Surface Treatment

Polished

Special Use

Cold Heading Steel, Free Cutting Steel

Application

Structural Steel Bar

Material

Alloy Steel Bar

Main Grade

4140 4145 B7 B16 Steel

1.Main Shape

Round Bar

2.Main Shape

Hex Steel Bar

3.Main Shape

Square Bar

Surface

Bright and Smoothly

Transport Package

Anti-Rust Packaging

Specification

5-310mm

Trademark

customized

Origin

China

Production Capacity

1000

Key features

High Strength & Toughness: Chromium and molybdenum content ensures high hardness penetration, uniformity, and excellent toughness.

Customizable Shapes: Available in Round, Hex, Square, and Flat bars with various dimensions to meet specific needs.

Flexible Surface Treatment: Options include Polished, Bright, Turned & Polished, and Centreless Ground for tighter tolerances.

Strict Quality Control: Comprehensive testing including Spectral, Microstructure, Hardness, Macrostructure, and UT tests.

Fast Delivery Options: 7-10 days for stock items; 30 days for new material orders after confirmation.

Certified Manufacturing: ISO9001, ISO/TS16949, CE Mark, and JIS/KS certified with advanced production equipment.

Free Sample Available: Customers can request free samples to verify quality before placing bulk orders.

Secure Packaging: Bundled and metal-strapped in three places; plastic bag or pallet loading available on request.

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: ≤6.80hTerms 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.