High-Strength Carbon Steel Square Bar for Structural Applications

Name: High-Strength Carbon Steel Square Bar for Structural Applications
Brand: Shanghai Changzeng Metal Co., Ltd.
SKU: 2317894645

Shanghai, ChinaShanghai Changzeng Metal Co., Ltd.

US$360.00-560.00

5 Tons

Product profile

Customization

Available

After-sales Service

Support

Warranty

Online Technical Support

Model NO.

Type

Alloy Steel Bar

Standard

AISI, ASTM, GB

Technique

Forged

Application

Structural Steel Bar, Tool Steel Bar, Die Steel Bar

Surface Treatment

Polished

Alloy

Non-alloy

Special Use

Mold Steel, Free Cutting Steel, Cold Heading Steel

Transport Package

Big Od/ Bulk Small Od: Packed by Steel Strip

Specification

10-900mm

Trademark

Origin

Shanghai

Production Capacity

5000 Tons/ Month, 15000 Tons/ Season

Key features

Solid construction - 100% solid steel, no hollow core, maximum strength for load-bearing applications

Two production processes - hot rolled for general structural use; cold drawn for precision machining with tight tolerances

Wide size range - from 10x10mm up to 300x300mm, custom lengths available

Flexible surface finishes - black (as-rolled), bright/polished, peeled, or ground finish

Widely used - machine shafts, bolts & fasteners, tool making, structural supports, automotive parts, and general engineering fabrication

Quality assured - each batch with mill test certificate; dimensional tolerance and straightness strictly controlled

Company profile

Years of Export ExperienceHigh Repeat Buyers ChoiceIn-stock CapacityQuality Assurance

Shanghai Changzeng Metal Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2016-01-13Nearest Port: Shanghai Port, Tianjin Port, Qingdao PortAverage Response Time: ≤3.85hTerms of Payment: LC, T/T, PayPal, etc.

AI-Powered supplier vetting

SummaryThe supplier is a Shanghai-based trading company that also identifies as a manufacturer/factory, with 19 years of export experience and 90% of sales from exports. It offers broad customization from samples, designs, and full-custom requirements, and reports standardized finished-product inspection instructions and quality assurance. However, the available information shows no new products in the past year, no ODM, SDK, overseas agents, overseas warehouse, showroom, or offline trade-show participation. Corrective/preventive action and complaint-handling procedures are undocumented, while supplier-service assessment procedures and approved supplier records are absent. Financial operating figures provided are zero, but their interpretation is not independently verifiable from the slices. Customer cases and certifications are not provided.

Supplier typeThe supplier is described as a trading company in Shanghai and is also identified as a Trading Company, Manufacturer/Factory. This indicates a mixed trading and manufacturing business classification, but the slices do not establish the scale or scope of its own production facilities.

After-Sales capabilityThe supplier reports in-stock service capacity and lead times within 15 working days in both peak and off-seasons. However, it has no overseas warehouse, overseas showroom, overseas agents or branches, and no written procedures or records for complaint handling or corrective and preventive actions, limiting evidence of a structured after-sales system.

Financial creditThe provided financial fields report zero operating revenue, profit, margins, current ratios, and cash outflows for the stated periods, while the supplier is listed as a limited company with registered capital information. These reported operating indicators provide explicit evidence of weak financial performance, although the slices do not explain the data quality or accounting context.

R&D capabilityThe supplier reports no new products in the past year, no ODM service, and no available SDK. These statements directly indicate limited demonstrated recent product-development and technical innovation capability.

Production capacityThe supplier is classified as both a trading company and manufacturer/factory, has in-stock capacity, and reports standardized instructions for finished-product inspection and quality assurance. Nevertheless, outsourcing procedures and manufacturing-capacity contract status are unknown, and only one quality assurance/quality control inspector is reported, so production depth cannot be fully confirmed.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization in both design-service and R&D-related descriptions. This is direct evidence of broad customization coverage, although it does not quantify engineering resources or production limits.

Product Q&A

Q:What is the difference between square bar and square tube?

Square bar is solid steel - heavier, stronger, used for shafts, bolts, and solid structural supports. Square tube is hollow - lighter, used for frames and fencing. We supply both, just tell us your application.

Q:What size range do you offer?

From 10x10mm up to 300x300mm. Standard lengths 6m/9m/12m, custom cutting available.

Q:Can you cut to my exact lengths?

Yes. We offer precision cutting, end-facing, and chamfering per your drawings.

Q:What surface finishes are available?

Black (as-rolled), bright/polished, peeled, or ground finish. We recommend based on your machining and appearance needs.

Q:What steel grades do you offer?

We offer carbon steel (Q235B, 45#, A36, 1045, S235JR), alloy steel (40Cr, 4140, 42CrMo), and stainless steel (304, 316). Custom grades available upon request.