Do you accept small orders?

Yes, small orders and customized sizes are available.

What payment terms do you accept?

We accept LC, T/T, D/P, Western Union, Small-amount payment, and Money Gram.

What is the lead time for production?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

Square Rectangle Hollow Section Black Welded Steel Tube

Name: Square Rectangle Hollow Section Black Welded Steel Tube
Brand: Guangzhou New Zhonglian Building Materials Co., Ltd.
SKU: 771045905

Guangdong, ChinaGuangzhou New Zhonglian Building Materials Co., Ltd.

US$600.00-800.00

10 Tons

Product profile

Customization

Available

Type

Welded

Technique

ERW

Model NO.

Steel Tube

Material

Carbon Steel

Surface Treatment

Black

Usage

Construction & Decoration

Section Shape

Square

Surface

Black, Bright, Zinc Coating

Square Section

13X13mm - 400X400mm

Rectangle Section

10X20mm - 300X400mm

Transport Package

Bundle

Origin

Tianjin

Production Capacity

1000tons/ Month

Key features

Wide Size Range: Square sections from 13x13mm to 400x400mm; Rectangular from 10x20mm to 300x400mm.

Customizable Surface: Available in Black, Bright, or Zinc Coating finishes based on customer needs.

Flexible Length Options: Standard lengths 1-14m or fully customized according to specific requirements.

Advanced Manufacturing: Produced using cold rolled, hot rolled, high-frequency welding, and cold-formed molding.

Multiple Standards Compliance: Meets GB/T 6728-2002, ASTM A500, EN 10219, JIS G3466, and DIN 7 standards.

Diverse Application Scope: Ideal for mechanical manufacturing, steel structures, shipbuilding, bridging, and auto chassis.

Small Order Support: Accepts small quantity orders and provides customized sizing solutions.

Global Export Capability: Serving markets in North America, Europe, Asia, Africa, and Oceania since 2000.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExhibition Experience

Guangzhou New Zhonglian Building Materials Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading Company, Group CorporationExport Year: 2000-09-01Nearest Port: Guangzhou, Shenzhen, FoshanAverage Response Time: ≤24hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CIF, EXW

AI-Powered supplier vetting

SummaryGuangzhou New Zhonglian Building Materials Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory. It offers steel structures, building materials, prefab and container houses, and related products. The supplier reports 13 years as an audited Alibaba Gold Supplier, ISO 9000 and ISO 9001 certifications, six to ten quality-control staff, two production lines, broad export coverage, and a typical off-peak lead time within 15 working days. Its business scope includes engineering construction, materials procurement, whole-house customization, soft furnishing, and after-sales service. However, the provided information does not verify detailed production ownership, financial strength, R&D deliverables, OEM/ODM services, raw-material traceability, or specific customer projects. The SGS audit record shown expired on 2025-08-22, and its evaluation result is recorded as 0 without an explanatory interpretation.

Supplier typeThe supplier is registered in Guangzhou, China, as a limited company, while its business classification identifies it as a trading company, manufacturer/factory, and group corporation. The available information therefore supports a mixed trading-and-manufacturing profile rather than a purely manufacturing identity.

CertificationsThe supplier reports ISO 9000 and ISO 9001 management-system certifications, and an SGS audit was conducted beginning 2024-08-23. However, the SGS record expired on 2025-08-22, so the available evidence does not establish current SGS validity.

After-Sales capabilityThe company description explicitly includes after-sales service for customers. Nevertheless, the slices provide no details on service staffing, response times, warranty procedures, spare parts, or overseas service arrangements; overseas warehouse and showroom capabilities are marked unknown.

Production capacityThe supplier reports two production lines, six to ten quality-control staff, exports to multiple global regions, and an off-peak lead time within 15 working days. Its profile combines manufacturing and trading roles, but the slices do not clarify owned-factory capacity, production volume by product, or raw-material traceability.

Customization capabilityThe company explicitly offers whole-house customization and supplies product categories including steel structure buildings, prefab houses, capsule houses, and container houses. This supports customization capability at the project or product-solution level, although specific design resources, customization limits, and execution processes are not provided.