What surface treatments are available?

We provide polished, oiled, or black surface treatments depending on your needs.

High Carbon Mild Galvanized Square Steel Rectangular Iron

Name: High Carbon Mild Galvanized Square Steel Rectangular Iron
Brand: Shanghai Changzeng Metal Co., Ltd.
SKU: 2194836315

Shanghai, ChinaShanghai Changzeng Metal Co., Ltd.

US$358.00-428.00

1 Ton

Sample price:US$488.00/ton.Request sample

Product profile

Customization

Available

Standard

AISI, ASTM, GB

Technique

Cold Drawn

Wall Thickness

Thin

Surface Treatment

Polished

Alloy

Non-alloy

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

Extensive Material Range: Available in 20#-45#, 50#, T8-T10, 16Mn-50Mn, 30Mn2-50Mn2, 20Cr, 40Cr, and many alloy steels.

Versatile Surface Treatment: Options include polished, oiled, or black finish to suit specific application needs.

Wide Application Scope: Ideal for construction, machinery, automotive, shipbuilding, and renewable energy projects.

Flexible Packaging Solutions: Packaging can be bulk, steel strips, or woven cloth, tailored to customer requirements.

Fast Delivery Time: Delivery within 3-15 working days after receiving deposit or L/C.

Multiple Payment Methods: Accepts T/T, L/C, PayPal, Western Union, and Credit Insurance for secure transactions.

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: ≤5.18hTerms 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 material types are available for the Carbon Square Steel Bar?

We offer a wide range including 20#-45#, 50#, T8-T10, 16Mn-50Mn, 30Mn2-50Mn2, 20Cr, 40Cr, 20-35SiMn, 20CrMnTi, 20CrMo, 30CrMo, 35CrMo, 42CrMo, Q235, Q345, 27SiMn, 60Si2Mn, 65Mn, 20Mn, 40Mn2, 50Mn, 50Crv, Cr12, Cr12MOV, 3Cr2W8V, W18, 20CrNiMoA, 34CrNiMo6, 30CrNiMo8, 9SiCr, 30CrMnSiA, 35CrMnSiA, 1-4Cr13, 38CrMoAl, 20MnCr5, 16MnCr5, 20CrMnMo, 40CrMnMo, 8620H, 17CrNiMo6, 42CrMo4, 35CrMoV, 9Cr8, 18CrNiMo7, 20CrMnTi, 25Cr2MV, 60Si2CrA, and 15CrMo.

Q:What is the delivery time for orders?

Delivery takes 3-15 working days after we receive the deposit or L/C.

Q:What are the payment terms accepted?

We accept T/T, L/C, PayPal, Western Union, Small-amount payment, and Credit Insurance.

Q:What are the main applications for this steel product?

It is widely used in construction (frameworks, bridges), machinery manufacturing, automotive (chassis, frames), shipbuilding, energy infrastructure, decorative architecture, and hardware production.

Q:How is the product packaged for shipping?

Packaging options include bulk for big orders, steel strips for small orders, woven cloth with 7 slats, or customized packaging according to customer requirements.