Can you provide custom sizes or shapes?

Yes, we can supply forged shafts according to client drawings and provide drawings based on client requirements.

What quality control tests are performed?

We perform spectral testing, microstructure testing, hardness tests, macrostructure tests, and 100% UT tests.

Hot Forged Square Bar AISI4140 for Engineering Excellence

Name: Hot Forged Square Bar AISI4140 for Engineering Excellence
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 2182768362

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$700.00-800.00

10 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Round

Standard

AISI, ASTM, DIN, JIS, GB

Model NO.

forged steel bar

Composition

Alloy Steel Bar

Technique

Forged

Shape

Bar

Surface Treatment

Black or Machining

Special Use

Mold Steel

Application

Auto Parts

Supply Condition

Hot Forged

Steel Shape

Round Bar/Square Bar/Rings

Surface

Black or Bright Surface

Qt Treatment

Avaliable

Other Heat Treatments

Annealling

Main Grade

AISI4140/42CrMo/4340/8620

Free Sample

Yes

Tolerance

-0mm/+0.1mm

Transport Package

Seaworth Packaging

Specification

200-1000mm

Trademark

Shandong

Origin

China

Production Capacity

8000tons

Key features

Superior Quality Forging: Expertly forged from vacuum degassed ingots ensuring superior quality and performance.

Versatile Shape Options: Available in Round, Square, Flat, Shaft, and Block forms to meet diverse engineering needs.

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

Advanced QC System: 100% UT test, spectral, microstructure, and hardness tests at every production stage.

Custom Processing: Supports rough machining, precision machining, and various heat treatments like annealing.

Fast Delivery: 7 days for stock items and 30 days for new material orders.

Wide Application Range: Ideal for auto parts, crankshafts, gears, and statically/dynamically stressed components.

Flexible Payment Terms: Accepts T/T or L/C for secure and convenient transactions.

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.