What certifications do your products have?

Products are certified by ISO 9001:2008, SGS, BV, CCIC, API, and CE.

What are the standard specifications for the tubes?

Standards include ASTM A500, EN10219, EN10210, JIS3466, and GB/T6728.

Black Steel Rectangular Hollow Section Carbon Square Steel Pipe Tube for Construction

Name: Black Steel Rectangular Hollow Section Carbon Square Steel Pipe Tube for Construction
Brand: Tianjin Youfa International Trade Co., Ltd.
SKU: 2141909715

Tianjin, ChinaTianjin Youfa International Trade Co., Ltd.

US$590.00

25-199 Tons

US$560.00

200+ Tons

Sample price:US$650.00/ton.Request sample

Product profile

Customization

Available

After-sales Service

Online Service

Type

Welded

Model NO.

SSP36

Technique

Hot Rolled

Material

Carbon Steel

Surface Treatment

Black

Usage

Pipeline Transport, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry

Section Shape

Square

Processing Service

Welding, Cutting, Bending

Thickness

0.5 - 16 mm

Certificate

API, CE, ISO9001

Length

5.8-12m

Transport Package

Standard Seaworthy Packing

Trademark

Youfa

Origin

China Tianjin

HS Code

7306690000

Production Capacity

300000 Metric Ton/Metric Tons Per Year

Key features

Extensive Size Range: Available in sizes from 20x20mm to 600x600mm with wall thickness up to 20mm.

Wide Material Selection: Offers Gr.A, Gr.B, Gr.C, S195, S235, S355, STK400, Q195, Q235, Q345 materials.

Multiple Processing Services: Provides welding, cutting, and bending services to meet specific project needs.

Global Certification Standards: Certified by ISO 9001:2008, SGS, BV, CCIC, API, CE, and meets ASTM/EN/JIS standards.

Flexible Customization: Supports full customization, minor customization, and customization from samples or designs.

Diverse Application Scope: Ideal for pipeline transport, hydraulic systems, oil/gas drilling, and machinery industries.

Reliable Manufacturing Capacity: Backed by 59 ERW lines, 24 square/rectangular lines, and 3 national accredited labs.

Competitive Lead Time: Delivery within 15-45 days after receiving advanced payment via T/T or LC.

Company profile

Cooperated with Fortune 500Exhibition ExperienceRaw-Materials TraceabilityRaw Materials Reports

Tianjin Youfa International Trade 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: ≤5.81h

AI-Powered supplier vetting

SummaryThe supplier is a limited company with 83 employees, an affiliated company, a valid import/export license, and stated OEM experience for well-known brands. It offers extensive customization and ODM services, reports new products within the past year, and provides substantial listed production capacity, including 657,000 tons of scaffolding and 50,000 tons of stainless steel pipe and fittings. Service procedures, corrective and preventive actions, and complaint-handling records are stated to exist. However, no valid manufacturing-capacity contract with the factory and related subcontractors is reported, and the supplier lacks overseas warehouses, showrooms, agents, or branches. Digitalization has started, but ERP integration and big-data use are absent. Evidence is insufficient for certifications and specific customer cases.

After-Sales capabilityThe supplier states that it has documented and followed procedures for service-capability assessment, corrective and preventive actions, and customer complaints. It offers in-stock service capacity and one-month stated lead times in both peak and off-season, but has no overseas warehouse, showroom, agent, or branch support.

R&D capabilityThe supplier reports new products within the past year, provides ODM services, and has broad R&D customization capabilities. It has started enterprise digital-process development, but lacks an available SDK, ERP integration, and big-data capability, indicating innovation activity with incomplete digital infrastructure.

Production capacityReported annual capacities include 657,000 tons of scaffolding and 50,000 tons of stainless steel pipe and fittings, alongside several steel-pipe categories. The supplier also reports inventory capability and a one-month lead time, but states that no valid manufacturing-capacity contract exists with its factory and related subcontractors.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization, and also states that it provides ODM services. This is direct evidence of broad customization support.