What certifications are provided?

We provide ISO certification and Mill Certificates, ensuring compliance with standards like ASTM, DIN, JIS, and GB.

What is the minimum order quantity?

Specific MOQ details are not listed, but we have over 20,000 tons of ex-stock available for various sizes.

What surface finishes are available?

Available surface finishes include Black, Peeled, Polished, Machined, Grinded, Turned, and Milled.

AISI 4340 Alloy Steel Round Bar Rolled Forged Flats

Name: AISI 4340 Alloy Steel Round Bar Rolled Forged Flats
Brand: HUNAN QILU INDUSTRIAL CO., LTD.
SKU: 876724455

Hunan, ChinaHUNAN QILU INDUSTRIAL CO., LTD.

US$2,500.00-3,500.00

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.

AISI 4340 Alloy Steel Round Bar

Composition

Ferrous Steel Scrap

Technique

Forged

Shape

Bar

Surface Treatment

Polished

Special Use

Engineering Steel

Application

Structural Steel Bar

Heat Treatment

Normalized;Annealed ;Quenched ;Tempered

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

Form

Round Bars/ Flat Bar / Blocks/ Tube

Process

Eaf+Lf+Vd+Forged+Heat Treatment(Optional)

Technology

Hot Rolled/ Forged/ Cold Drawn

Surface

Black; Peeled; Polished; Machined; Grinded; Turned

Test

Ensile Strength, Yield Strength, Elongation

Certificate

ISO/ Mill Certificate

Experience

15 Years Manufacturer Experience

Transport Package

Seaworthy Package

Specification

DIA 90-600

Trademark

Qilu

Origin

China

HS Code

722840

Production Capacity

500, 000tons/Year

Key features

High Strength & Toughness: Medium carbon low alloy steel with tensile strength 930-1080 Mpa, excellent for highly stressed parts.

Versatile Heat Treatment: Available in Normalized, Annealed, Quenched, and Tempered conditions to meet specific mechanical needs.

Wide Size Range: Round bars from 6-1200mm diameter; plates/blocks up to 500mm thickness and 1200mm width.

Multiple Surface Options: Surface treatments include Black, Peeled, Polished, Machined, Grinded, Turned, and Milled.

Proven Manufacturer: 15 years experience with advanced EAF, LF, VD, and electroslag remelting facilities.

Global Stock Availability: Over 20,000 tons ex-stock available in Wuxi and Dongguan warehouses for quick delivery.

Comprehensive Certification: Supplied with ISO and Mill Certificates, meeting ASTM, DIN, JIS, and other international standards.

Wide Application Scope: Ideal for aircraft landing gear, automotive, oil & gas, gears, shafts, and heavy-duty engineering.

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: ≤2.59hTerms 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.