What international standards does this steel meet?

The steel complies with AISI, ASTM, DIN, JIS, GB, and BS standards.

What is the minimum order quantity or stock availability?

We maintain over 20,000 tons of ex-stock inventory with various sizes available.

Do you provide technical support for mechanical properties?

Yes, please contact our sales team for specific mechanical property data based on different heat treatments.

4140 High Carbon Hot Rolled Steel Round Bars

Name: 4140 High Carbon Hot Rolled Steel Round Bars
Brand: HUNAN QILU INDUSTRIAL CO., LTD.
SKU: 876455985

Hunan, ChinaHUNAN QILU INDUSTRIAL CO., LTD.

US$800.00-900.00

1 Ton

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Round

Standard

AISI, ASTM, DIN, JIS, GB, BS

Model NO.

D2 H13 1045 4340 4140 P20

Composition

Ferrous Steel Scrap

Technique

Forged

Shape

Bar

Surface Treatment

Polished

Special Use

Engineering Steel

Application

Structural Steel Bar

Heat Treatment

Annealed, Qt

Payment Term

30% Tt Deposit, Balance Against Bl Copy

Length

3000-5800mm

Ex-Stock

Delivery Date

30 Days

Ut Standard

Sep 1921-84 D/D

Grain Size

ASTM E112

Non-Metallic Inclusiton

ASTM E45

Transport Package

Seaworthy Package

Specification

DIA 90-1200

Trademark

Qilu

Origin

China

HS Code

722840

Production Capacity

500, 000tons/Year

Key features

Wide Standard Compliance: Meets AISI, ASTM, DIN, JIS, GB, and BS international standards.

Superior Mechanical Strength: Higher carbon content provides greater strength than 4130 alloy steel.

Versatile Heat Treatment: Available in Normalized, Annealed, Quenched, and Tempered states.

Extensive Size Range: Round bars from 6mm to 1200mm diameter; plates up to 500mm thickness.

Multiple Surface Options: Offers Black, Peeled, Polished, Machined, Grinded, Turned, and Milled finishes.

Comprehensive Testing: Includes tensile, yield, hardness, grain size, ultrasonic, and magnetic particle tests.

Global Export Experience: Over 11 years of exporting to Europe, America, Asia, Africa, and Australia.

Advanced Manufacturing Capacity: Equipped with 50t furnaces and up to 4500t forging units for large-scale production.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceFast DeliveryLow MOQ

HUNAN QILU INDUSTRIAL CO., LTD.

Hunan, China

Business Type: Manufacturer/FactoryExport Year: 2008-06-01Nearest Port: SHANGHAI, NINGBO, QINGDAOAverage Response Time: ≤2.90hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryThe supplier is identified as HUNAN QILU INDUSTRIAL CO., LTD., a China-based limited company with conflicting classifications as both a trading company and manufacturer/factory. It has broad steel-related business activities, extensive stated export markets, self-operated import/export rights, and eight years of export experience. Customization, ODM, and OEM capabilities are explicitly reported. However, service-management documentation is absent, including supplier approval, corrective-action, and complaint-handling procedures. No in-stock, overseas warehouse, showroom, agent, or branch capability is reported. Financial records are referenced for 2021–2023, but no substantive financial performance evidence is provided. Production volumes and staffing are stated, although the supplier’s trading-company classification creates uncertainty regarding direct manufacturing capacity. No certifications or customer cases are documented.

After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or customer-complaint handling. It also reports no in-stock service, overseas warehouse, showroom, agent, or branch capability, although lead times are stated as one month in both peak and off-season periods.

R&D capabilityThe supplier reports total R&D-engineer experience of 6–10 years and offers ODM services, indicating some design and development capability. However, it has no available SDK, and the slices do not provide concrete innovation outputs, patents, or product-development records.

Production capacityThe supplier states production categories covering cold-drawn material, steel round bar, steel plate, and steel pipe, with substantial annual output figures and 11–20 quality-control staff. However, its classification as both trading company and manufacturer/factory is inconsistent, so the extent of directly controlled production capacity requires verification.

Customization capabilityFlexible customization is explicitly reported, together with ODM service availability and OEM service for popular brands. These statements provide direct evidence of customization and outsourced-brand production capability.