4140 B7 Cold Drawn Alloy Steel Bar for B7 Threading Rod

Name: 4140 B7 Cold Drawn Alloy Steel Bar for B7 Threading Rod
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 2180187412

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$1,050.00

3 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

round bar

Type

Alloy Steel Bar

Standard

AISI, ASTM, GB, JIS

Technique

Cold Drawn

Application

B7 Threading Rod

Surface Treatment

Polished

Alloy

Special Use

B7 Studs

Main Quality Leverl

B7 L7 B16 B8

Surface

Polished Surface

Main Grade

B16 4140 Alloy Steel

Transport Package

Anti-Rust Packaging

Specification

1/2''-4''

Trademark

dajin

Origin

China

Key features

ASTM A193 B7 Compliance: Fully compliant with ASTM A193 B7 mechanical requirements including 125 ksi tensile strength.

Customized Lengths: Available in various diameters (1/2''-3 1/4'') with custom lengths tailored for export and fabrication.

Precision Tolerances: Strict diameter tolerances (h9-h11) minimize material waste during thread-rolling processes.

Heat Treatment Ready: Quenched and Tempered (Q&T) with uniform hardness and superior center-to-surface consistency.

Material Test Report: Mill Test Report (MTR) provided for every batch verifying chemical composition and impact properties.

Threading Optimization: Optimized grain flow and hardness for automatic lathe turning and high-speed thread rolling.

Global Logistics Support: Expertise in export packaging, anti-rust bundling, and secure shipping to global industrial hubs.

High Strength Alloy: AISI 4140 heat treatable low alloy steel with chromium and molybdenum for high strength and toughness.

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: ≤0.90hTerms 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 a manufacturer from Shandong, China, with a significant annual production output exceeding US$100 million. The company specializes in steel-related products and holds certifications like ISO 9001 and OHSAS/OHSMS 18001, indicating strong quality and safety standards. With a robust export strategy, Dajin exports 51%-70% of its sales to diverse markets globally. The company offers customization services to meet specific customer standards and maintains a ready stock of key steel grades. However, information on after-sales services and financial credibility is insufficient to make a definitive assessment.

Supplier typeShandong Dajin Metal Material Co., Ltd. is identified as a manufacturer/factory and structured as a limited company.

CertificationsThe supplier holds ISO 9001 and OHSAS/OHSMS 18001 certifications, indicating compliance with quality and occupational health and safety standards.

Production capacityDajin operates 4 production lines with an annual production output above US$100 million, covering a wide range of steel products.

Customization capabilityThe supplier can provide products meeting various international standards and offers customization services based on customer requirements.

Client casesThe supplier has engaged with international buyers such as SR TRADE INDUSTRIA E COMERCIO LTDA and QADBROS ENGINEERING PRIVATE LIMITED.

Product Q&A

Q:Are your B7 steel bars ready for direct thread rolling?

Yes. Our Cold Drawn Qt Steel Round Bars are precision-processed with exact dimensional tolerances and optimal grain flow, making them thread rolling ready for high-speed industrial fastener production. We also control the B7 Pitch Size for Threading to ensure seamless manufacturing.

Q:Do you provide a Material Test Report (MTR) with each shipment?

Absolutely. Every batch of ASTM A193 B7 raw material is delivered with a full MTR (Material Test Report), fully verifying chemical composition, heat number, and mechanical performance (such as tensile strength and hardness).

Q:What surface treatments and export packaging do you offer?

We supply bars in plain finish, or with customized anti-rust oil protection. For export, our Customized length 4140 alloy steel bars are securely bundled, moisture-proofed, and packed to withstand long-distance container shipping to the Middle East, Southeast Asia, and global markets.

Q:Can you supply associated grades alongside B7?

Yes, we provide a comprehensive portfolio of industrial fastener raw materials, including ASTM A320 L7 Low Temperature Studs, ASTM A193 B8 / B8M Stainless Steel, and matching Heavy Hex Nuts (such as Grade 2H) for complete project compatibility.

Q:Do you have ready stock

Yes,in order to get a good properties for the final QT steel bar,the raw materail must be keep in our warehouse more than one month.So we alway keep 3000tons stocks.