What certifications does the manufacturer hold?

Certifications include ISO9001, ISO/TS16949, ISO4001, OHSAS18001, CE Mark, JIS MARK, and KS MARK.

What are the typical applications for this steel bar?

Typical applications include fasteners, high-strength bolts and nuts, thread rods, shafts, connecting rods, and gears.

What is the minimum order quantity or MOQ?

The product description does not specify a minimum order quantity; please contact the supplier for details.

Premium AISI 4140 Cold Drawn Round Bar for Industrial Use

Name: Premium AISI 4140 Cold Drawn Round Bar for Industrial Use
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 738121622

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$700.00-1,000.00

10 Tons

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Type

Alloy Steel Bar

Standard

AISI, ASTM, DIN, JIS, GB

Model NO.

alloy steel bar

Composition

Ferrous Steel Scrap

Technique

Cold Drawn

Shape

Bar

Surface Treatment

Polished

Special Use

High-strength Steel Plate, Cold Heading Steel

Application

Structural Steel Bar

Main Grade

4140 4142 B7 B16 5140 1020

Supply Condition

Qt/Qt+Cold Dawn/Cold Drawn

Dia Tolerance

H9,H10,H11

High Strength Bolts

Fanstner

Smoothly Surface

Threaded Bar

Transport Package

Anti-Rust Packaging

Specification

5mm-310mm

Trademark

customized

Origin

China

Production Capacity

1000

Key features

Customizable Tolerances: Size tolerance available in h9, h10, h11 or according to client's requirement.

Wide Size Range: Round bars 5mm-130mm, Square 6x6mm-100x100mm, Flat 3x20mm-50x100mm.

Multiple Surface Finishes: Options include Peeled, Cold Drawn, Turned & Polished, and Centreless Ground.

Fast Delivery: 7-10 days for stock items, 30 days for new material orders.

Free Samples: Free samples are available for quality verification before bulk orders.

Strict Quality Control: Includes Spectral, Microstructure, Hardness, Macrostructure, and UT tests.

Global Certifications: ISO9001, ISO/TS16949, CE Mark, JIS MARK, and KS MARK certified.

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: ≤8.06hTerms 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.