What are the main applications of this steel bar?

It is used for statically and dynamically stressed components in vehicles, engines, and machines, including crankshafts and gears for larger cross-sections.

What is the production process?

The process includes EAF+LF+VD (necessary), UT, Peeled (optional), Turned (optional), and Heat Treatment (optional).

How is the product packed?

We provide standard seaworthy packing or packaging customized according to customer requirements.

Premium A193 B7 Gr55 Alloy Steel Round Bar for Industrial Use

Name: Premium A193 B7 Gr55 Alloy Steel Round Bar for Industrial Use
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 736576942

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, GB

Model NO.

steel bar

Composition

Alloy Steel

Technique

Hot Rolled

Shape

Bar

Surface Treatment

Black Surface

Special Use

Cold Heading Steel, Free Cutting Steel, Bolts

Application

Structural Steel Bar

Supply Condition

Hot Rolled+Qt/Cold Drawn+Qt

Surface

Bright or Black

Threaded Bar

Avaiable

Hardness Testing

Yes

Main Grade

Gr10.9 Gr8.8 Bolts

Transport Package

Bundle by Wire Rod

Specification

diameter: 10mm-300mm

Trademark

Shandong

Origin

Shandong

Production Capacity

5000tons

Key features

Wide Size Range: Available in hot rolled (10-350mm) and forged (200-800mm) diameters.

Fast Delivery: Ready stock shipped within 7 days; new material takes 30 days.

Custom Surface: Surface options include bright, black, peeled, or turned finishes.

Multiple Grades: Includes 42CrMo4, 1.7225, 4140, and SCM440 alloy steel grades.

Strict Inspection: Spectral, microstructure, hardness, macrostructure, and ultrasonic tests.

Seaworthy Packing: Standard seaworthy packing or customized as per customer requirements.

Versatile Application: Ideal for vehicle parts, engines, machines, crankshafts, and gears.

Professional Service: Dedicated sales and technical team with integrated steel resources.

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: ≤8.73hTerms 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.

Product Q&A

Q:What are the available sizes for the steel bars?

Hot rolled bars range from 10mm to 350mm. Forged bars range from 200mm to 800mm. Forged square blocks are 200x200mm to 500x500mm, and flat blocks are (150-500mm) x (200-500mm).

Q:What is the delivery time for orders?

Ready stock can be shipped within 7 days. For new material production, the lead time is approximately 30 days.

Q:What surface treatments are available?

We offer bright, black, peeled, or turned surface finishes. The supply condition can be Hot Rolled+Qt or Cold Drawn+Qt.

Q:What inspection standards are used?

Inspections include Spectral, Microstructure, Hardness, Macrostructure, and Ultrasonic tests according to standards like SEP1921-84 and GR.3 CLASS C/C.

Q:What are the payment terms?

We accept LC, T/T, D/P, and Western Union for payments.