What payment terms do you accept?

We accept T/T, L/C, D/P, PayPal, Western Union, and small-amount payments.

What are your packaging options?

We offer bulk packing, steel strips, plastic bags, or custom packaging per requirements.

Do you have OEM and ODM services?

Yes, we support both OEM and ODM services with dedicated R&D engineers.

Factory Q235B A36 Black Rectangular Square Tube

Name: Factory Q235B A36 Black Rectangular Square Tube
Brand: TIANJIN NANXIANG STEEL STRIP PROCESSING CO., LTD.
SKU: 2082167212

Tianjin, ChinaTIANJIN NANXIANG STEEL STRIP PROCESSING CO., LTD.

US$610.00

10-99 Tons

US$580.00

100-499 Tons

US$550.00

500+ Tons

Product profile

Customization

Available

Type

Welded

Technique

Hot Rolled

Model NO.

SQUARE TUBE

Material

Carbon Steel

Surface Treatment

Black

Usage

Machinery Industry, Construction & Decoration

Section Shape

Square

O.D

15*15-400*400mm

Wall Thickness

0.5-20mm

Thickness Tolerance

+-0.03mm

Od Tolerence

+-0.5mm

Length

5.8-12m

MOQ

10mt

Transport Package

Packed by Steel Strips

Specification

ISO9001

Trademark

Zhen Xiang

Origin

Tianjin, China

Production Capacity

60000t/Per Month

Key features

Diverse Material Options: Available in Q195, Q235, SS330, S185, SS400, and S235JR grades.

Customizable Dimensions: Outer diameter ranges from 15x15mm to 400x400mm with wall thickness 0.5-20mm.

Full Customization Service: Offers full customization, design-based, and sample-based customization options.

Flexible Packaging: Options include bulk, steel strips, plastic bags, or customer-specific requirements.

Multiple Payment Terms: Accepts T/T, L/C, D/P, PayPal, Western Union, and small-amount payments.

Fast Delivery: Delivery completed within 15-40 days after receiving deposit or L/C.

OEM and ODM Support: Provides both OEM and ODM services with 10 R&D engineers.

Strict Quality Control: Features 20 QA/QC inspectors with random visual and function inspections.

Company profile

Exhibition ExperienceExperienced TeamIn-stock CapacityQuality Assurance

TIANJIN NANXIANG STEEL STRIP PROCESSING CO., LTD.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 12 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤2.62h

AI-Powered supplier vetting

SummaryThe supplier appears to be a steel-oriented manufacturer with a steel production line, stated annual output of approximately one million tons across various products, and reported production of flat bar and angle bar. It offers full customization, customization from designs and samples, ODM services, and OEM services for well-known brands. Quality and service systems show some documented procedures, including corrective and preventive actions, complaint handling, and uniformly followed finished-product inspection instructions. R&D resources include 10 engineers, 20 quality-control test devices, CAD capability, and auditable design documentation; however, no new products were reported during the past year and no SDK is available. Financial records are identified for 2021–2023, but the provided information does not establish financial strength. The supplier claims broad domestic and overseas sales and experience serving construction, government, hospital, shipbuilding, steel construction, agricultural...

Supplier typeThe supplier is presented primarily as a steel manufacturer, with a named steel production line, flat bar and angle bar output, and applications in construction, shipbuilding, steel construction and related sectors. Its registered business scope also includes broad trading and sales activities covering rubber, furniture, office equipment, chemicals, cables, plastics, hardware, electronics and other goods, indicating a mixed manufacturing and commercial profile.

After-Sales capabilityThe supplier has a clear corrective and preventive action procedure with follow-up records and a clear customer-complaint handling procedure with records. Its company description also claims comprehensive after-sales service and willingness to develop with customers, but the documented procedures provide the strongest direct support.

Production capacityThe supplier reports a steel production line, approximately one million tons of annual output across various product types, and specific annual capacities of 800,000 tons for flat bar and 160,000 tons for angle bar. These stated production figures and identified facility support a strong production-capability assessment.

Customization capabilityThe supplier explicitly provides full customization, customization from designs and customization from samples. R&D engineers are responsible for sample and customization confirmation, while CAD capability and auditable design documentation further support execution of customized product requirements.