What is the warranty period for the product?

We provide a 1-year warranty for our carbon steel square pipes, ensuring quality assurance for mechanical and structural needs.

What are the main applications for this square steel tube?

It is ideal for build construction, mechanical manufacturing, structural framing, mechanical parts, and industrial equipment due to its durability and versatility.

Heavy-Duty Black Square Steel Tube for Mechanical and Structural Needs

Name: Heavy-Duty Black Square Steel Tube for Mechanical and Structural Needs
Brand: Zhejiang Yingjia Steel Co., Ltd.
SKU: 2272351955

Zhejiang, ChinaZhejiang Yingjia Steel Co., Ltd.

US$650.00

1-24 Tons

US$600.00

25-98 Tons

US$550.00

99+ Tons

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Quality Assurance

Warranty

1 Year

Model NO.

Square Steel Pipe

Type

Non-Alloy

Technique

ERW

Material

Carbon Steel

Surface Treatment

Shot/Sand Blasting Surface Treatment, Pickling

Usage

Build Construction Mechanical Manufacture

Section Shape

Square

Thickness

0.8mm-30mm

Alloy

Non-Alloy

Product Name

Carbon Steel Pipe

Tolerance

Standard

Delivery Time

5 to 25 Days

Length

Customized Length

Transportation

Bulk Vessel, Container Shipment

Steel Grade

Gr.a/B/C/D, S195jr, S235jr, S275jr, S355jr, S355j0

Process

Cutting Welding Bending Painting

Transport Package

Standard Export Packaging

Specification

15-1000mm

Trademark

Huatuo

Origin

Tianjin, China

Production Capacity

400, 000ton/Year

Key features

Customizable Dimensions: Side size 15mm-1000mm, thickness 0.8mm-30mm, and customized length available.

One-Stop Processing: Services include cutting, welding, bending, painting, and surface treatments like pickling.

Wide Steel Grade Range: Supports Gr.A/B/C/D, S195jr, S235jr, S275jr, S355jr, S355j0, S355j2, S460jr, S600jr.

Large Scale Supply: Annual output of 400,000 tons ensures stable supply for bulk orders.

Flexible Delivery: Delivery time ranges from 5 to 25 days, aligned with project timelines.

OEM/ODM Support: Full customization, minor customization, and customization from samples or designs available.

Corrosion Resistance: Surface treatments like shot blasting, pickling, and anti-rust oil boost lifespan.

Quality Assurance: 1-year warranty and strict quality control meeting global standards.

Company profile

Zhejiang Yingjia Steel Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 5 years CertifiedNearest Port: Beilun portAverage Response Time: >24h

AI-Powered supplier vetting

SummaryThe supplier demonstrates established regional market experience, long-term cooperation with recognized local enterprises, and reported sales volume exceeding 380,000 tons in 2024. It offers broad customization, OEM, and ODM services, and has documented procedures for corrective actions and customer complaints. However, its service-capability assessment procedure lacks written procedures or records, and the approved-supplier list is incomplete. The supplier is not identified as a professional technical supplier, does not provide 3D software design or SDK services, and reported no new products in the past year. It lacks inventory, overseas warehouses, overseas showrooms, overseas agents or branches, and has not participated in offline trade shows. Sustainability-related evidence is also weak because no recent fire drills or factory environmental impact assessment report were reported. Certification information is not provided.

After-Sales capabilityThe supplier has clear procedures and followed records for corrective and preventive actions and customer complaint handling, supporting a documented service response capability. However, service-capability assessment lacks written procedures or records, and the supplier has no overseas warehouse, showroom, agent, or branch support.

R&D capabilityThe supplier does not have professional technical R&D capability, SDK availability, or 3D software design services, and reported no new products in the past year. ODM capability is available, but the evidence does not demonstrate recent product innovation.

Production capacityThe supplier reported total sales volume exceeding 380,000 tons in 2024 and has established cooperation with recognized local enterprises, indicating significant commercial supply activity. Nevertheless, it explicitly lacks in-stock capability and reported peak-season lead time of one month, while off-season lead-time data is unclear and inconsistent.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. It also provides OEM and ODM services, directly supporting broad customization capability.

Client casesThe supplier cites long-term cooperation with Zhejiang Yasha Group and Southeast Steel Structure, as well as agents and end customers across Zhejiang Province. It also reports recognition from numerous enterprises and customers, providing concrete regional customer references.

Product Q&A

Q:What are the customizable specifications for the square steel tube?

The side size ranges from 15mm to 1000mm, wall thickness from 0.8mm to 30mm, and length can be customized to meet diverse design needs.

Q:What steel grades are available for this carbon steel pipe?

We support multiple grades including Gr.A/B/C/D, S195jr, S235jr, S275jr, S355jr, S355j0, S355j2, S460jr, and S600jr to ensure structural strength for various load scenarios.

Q:What processing services are provided?

We offer one-stop processing services including cutting, welding, bending, and painting, along with surface treatments like shot/sand blasting, pickling, and anti-rust oil treatment.

Q:What is the delivery time for orders?

Delivery time is flexible, ranging from 5 to 25 days, aligned with your project timeline.

Q:Is OEM or ODM service available?

Yes, we provide OEM support and offer various customization options including full customization, minor customization, and customization from samples or designs.