What surface treatments are available?

Options include black surface, rough machining, rough turning, and heat treatment (normalized/annealed/quenched/tempered).

What testing is performed?

100% UT test, spectral tested, microstructure tested, hardness test, and macrostructure test.

What are the standard sizes?

Round bar: 200mm-800mm; Square block: 200mm*200mm-500mm*500mm; Flat block: (150mm-500mm)*(200mm-500mm).

Forged Steel Bar Ck45 4140 Square Shaft Hot Forging

Name: Forged Steel Bar Ck45 4140 Square Shaft Hot Forging
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 2182645322

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$600.00-880.00

5 Tons

Product profile

Customization

Available

Type

Carbon Steel Bar

Standard

AISI, ASTM, GB, JIS, DIN

Model NO.

forged steel bar

Technique

Forged

Application

Structural Steel Bar

Surface Treatment

Rough Machining

Alloy

Non-alloy

Special Use

Roller Shaft

Supply Condition

Forged Steel Bar

Shape

Round Bar,Square Bar,Forged Block,Forged Parts

Grade

SAE1020 S45c Ck45 4140

Surface

Black or Rough Machining Surface

Ready Stock

Yes

Transport Package

Seaworhty Pacakging

Specification

200-800mm

Trademark

dajin

Origin

China

Production Capacity

3000

Key features

Custom Shape Options: Available in Round Bar, Square Bar, Forged Block, and Forged Parts based on client drawings.

Wide Grade Selection: Includes SAE1020, S45c, CK45, 4140, SAE1045, 1035, and A105 forged steel grades.

Fast Stock Delivery: 7-day delivery for stock items; 30-day delivery for new material orders.

Precision Machining: Utilizes CAD, Wire EDM, and Plunge EDM for high-precision and complex designs.

Comprehensive Testing: 100% UT test, spectral, microstructure, hardness, and macrostructure inspections.

Multiple Certifications: ISO9001, ISO/TS16949, CE Mark, JIS MARK, and OHSAS18001 certified.

Flexible Surface Treatment: Options include black surface, rough machining, rough turning, and heat treatment.

Industrial Application: Ideal for vehicles, engines, crankshafts, gears, and statically/dynamically stressed components.

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.