Which steel grades do you supply?

We supply Carbon, Alloy, Stainless, and Free cutting steels including SAE, JIS, DIN, and GB standards.

What is your quality control process?

We have a full QC system with professional technicians and pre-shipment inspectors testing size, roughness, and hardness.

Do you provide OEM services for steel grades?

Yes, we can produce new grades according to client specifications and provide professional suggestions.

SAE4140 42CrMo4 Cold Drawn Heat Treatment Qt Alloy Steel

Name: SAE4140 42CrMo4 Cold Drawn Heat Treatment Qt Alloy Steel
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 779292082

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$700.00

5-24 Tons

US$680.00

25+ Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Carbon Steel Bar

Standard

AISI, ASTM, JIS, DIN

Model NO.

alloy steel bar

Technique

Cold Drawn

Application

Structural Steel Bar

Surface Treatment

Polished

Alloy

Non-alloy

Special Use

Cold Heading Steel

Product Name

Cold Drawn Round Bar

Material

Hot Rolled Steel Bar

Main Grade

Ss400 S20c SAE1018 SAE1035 1045 4140 4145h

Surface

Bright and Cold Finished

Size Range

5mm-100mm

Diameter Tolerance

H9, H10, H11

Cutting Service

Yes

Ready Stock

Yes

Heat Treatment

Annealing, Qt or Normilized

Transport Package

Anti-Rust Packagig

Specification

dia: 5mm-100mm

Trademark

dajin

Origin

China

Production Capacity

3000

Key features

Wide Size Range: Available in sizes from 5mm to 100mm for round bars and various shapes.

High Precision Tolerance: Minimum size tolerance of -0.02mm/+0mm and straightness of 0.2mm/m.

Multiple Surface Finishes: Options include peeled, cold drawn, turned & polished, and centreless ground.

Extensive Grade Selection: Covers Carbon, Alloy, Stainless, and Free cutting steels per JIS, AISI, DIN standards.

Custom Heat Treatment: Services include annealing, quenching, tempering, and normalization.

Ready Stock Availability: 5000 tons of hot rolled and 1000 tons of cold drawn steel kept in stock.

Fast Delivery: 7-10 days for stock sizes and 20-25 days for fresh production.

Comprehensive Quality Control: Full inspection for size, roughness, UT level, properties, and hardness.

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: ≤7.49hTerms 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.