Do you provide certifications for your products?

Yes, our products are certified under ISO9001:2000, CE, and SGS standards.

What are the payment terms accepted?

We accept LC, T/T, D/P, PayPal, Western Union, and O/A payment methods.

What are the available shipping terms and ports?

We offer FOB, EXW, CFR, CIF, DDP, and CPT terms, shipping from Tianjin, Guangzhou, or Shanghai ports.

High-Frequency Welded Carbon Square Steel Tube

Name: High-Frequency Welded Carbon Square Steel Tube
Brand: Chengdu Derbo Steel Co., Ltd
SKU: 2192847835

Sichuan, ChinaChengdu Derbo Steel Co., Ltd

US$450.00

5 Tons

Product profile

Customization

Available

Technique

Hot Rolled

Surface Treatment

Coated

Standards

ASTM A53-2007, GB/T 3094-2000, JIS G3466, En10219

Grade

10#-45#, Q195-Q345, St35-St52, 10#, 20#, 45#, Q195

Thickness

1.5 - 30 mm

Outer Diameter

20*20mm-300*300mm

Length

2-12 M, or According to Customers' Requirements

Surface Treatments

Galvanized or None

Wall Thickness

Thick & Thin

Alloy

Non-Alloy

Transport Package

in Bundle

Specification

BS, ASTM, JIS, GB, DIN, AISI, 200*200mm-800*800mm

Trademark

DERBO

Origin

Hebei, China (Mainland)

Production Capacity

250000 Tons/Year

Key features

Wide Size Range: Square sizes from 20x20mm to 200x200mm and rectangular sizes up to 250x150mm available.

Customizable Length: Lengths from 2 to 12 meters or customized according to customer requirements.

Multiple Surface Treatments: Options include galvanized, oiled, painted, or bare surface finishes.

Diverse Material Grades: Available in Q195, Q235, Q345, St35, St52, and ASTM A500/A513 grades.

Comprehensive Certifications: Certified with ISO9001:2000, CE, and SGS standards.

High Production Capacity: Monthly productivity reaches 15,000 tons to ensure timely delivery.

Flexible Packaging: Packaging options include wooden boxes, steel strips, or pallets as requested.

Multiple Manufacturing Techniques: Produced via hot rolled, cold rolled, ERW, high-frequency welded, and extruded methods.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceExperienced TeamIn-stock Capacity

Chengdu Derbo Steel Co., Ltd

Sichuan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2006-08-08Nearest Port: Tianjin port, Guangzhou port, Shanghai portAverage Response Time: ≤0.88hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, CPT, Others

AI-Powered supplier vetting

SummaryThe supplier demonstrates customization and ODM capabilities, maintains inventory capacity, accepts multiple trade and service-payment terms, and reports ISO9001:2015 and CE certifications. However, its service-management procedures lack written records, and it has no overseas showroom, overseas agents or branches, overseas warehouse, or offline trade-show participation. No new products were reported in the past year, and digital management capabilities appear limited, with no ERP, CRM, SAP, SDK, or AI-based management implementation identified. Financial information supplied for the stated periods consists of zero values, which does not establish financial credibility. Evidence of named customers, completed projects, or recognized-brand OEM work is absent.

CertificationsThe supplier reports an ISO9001:2015 certificate and CE product certification capability. It also states that regular fire drills were conducted during the past year, supporting operational safety practice, although no additional certification details are provided.

After-Sales capabilityThe supplier has written procedures for service assessment, corrective and preventive action, and customer complaints, but has no written records demonstrating implementation. It lacks overseas service infrastructure and overseas warehouse capability, while offering multiple quotation and payment terms and reporting one-month lead times in both peak and off-season.

Financial creditThe supplied financial indicators for the stated periods are all recorded as zero, including operating revenue, costs, profit, gross margin, and current ratio. This information does not demonstrate financial strength or reliable financial performance.

R&D capabilityThe supplier offers ODM and multiple forms of customization, but reports no new products in the past year and no available SDK. It also reports no ERP, CRM, SAP, or AI-based management implementation, while the stated technical-transformation, big-data, and OA capability values are zero.

Customization capabilityThe supplier explicitly provides customization from samples, customization from designs, full customization, minor customization, flexible customization, and ODM services. These stated offerings provide clear evidence of broad customization capability.