What certifications are provided with the products?

Products are manufactured under ISO 9001 certified quality management systems. We provide Mill Test Certificates (MTC), Certificate of Origin, and can cooperate with third-party inspections by SGS, Bureau Veritas, or Intertek.

What are the common applications for these square tubes?

They are widely used in construction frameworks, structural supports, fencing systems, agricultural greenhouses, solar mounting structures, machinery frames, and infrastructure projects.

Premium Hot DIP Galvanized Square Tube, Q355b, 50X50mm

Name: Premium Hot DIP Galvanized Square Tube, Q355b, 50X50mm
Brand: Shandong Kanghong Machinery Manufacturing Co., Ltd
SKU: 2152276162

Shandong, ChinaShandong Kanghong Machinery Manufacturing Co., Ltd

US$460.00-580.00

5 Tons

Product profile

Customization

Available

Type

Welded

Technique

ERW

Model NO.

Q235B Q355B ASTM A500

Material

Carbon Steel

Surface Treatment

Hot DIP Galvanized

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Food/Beverage/Dairy Products, Machinery Industry, Construction & Decoration, Special Purpose

Section Shape

Square

Standard

ASTM, GB, JIS, En

Grade

Q235B, Q355b, ASTM A500

Outer Dimension

20X20mm - 400X400mm

Wall Thickness

1.0mm - 12.0mm

Length

6m, 12m, as Customer's Request

Zinc Coating Weight

≥80G/M²

Zinc Coating Thickness

≥45μm

Yield Strength

≥235MPa

Tensile Strength

Tensile Strength 370-500MPa

Elongation

≥26%

Processing Service

Cutting, Drilling, Bending

Size Tolerance

±0.5mm

MOQ

5 Tons

Delivery Time

7-15 Days

Certification

ISO9001, SGS, BV

Transport Package

Packed in Bundles

Trademark

KANGHONG

Origin

Shandong, China

Production Capacity

500000 Ton

Key features

Wide Size Customization: Outer dimensions 15x15mm to 600x600mm with custom wall thickness and length options.

Multi-Standard Compliance: Meets ASTM A500, EN 10219, JIS G3466, AS/NZS 1163, and GB/T 6728 standards.

Versatile Processing Services: Offers cutting, drilling, bending, punching, and miter cutting for specific fabrication needs.

Premium Material Quality: Manufactured from high-grade carbon steel ensuring excellent weldability and structural integrity.

Rigorous Quality Assurance: ISO 9001 certified with Mill Test Certificates and third-party inspections by SGS/BV.

Broad Application Scope: Ideal for construction, solar mounting, fencing, agriculture, and industrial machinery frames.

Flexible Delivery Options: Standard lengths available with custom cut-to-length services and 7-15 days delivery time.

Company profile

Importers and ExportersFast DeliveryQuality AssuranceProduction Process Visualization

Shandong Kanghong Machinery Manufacturing Co., Ltd

Shandong, 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: Foreign trade business has just begun CertifiedNearest Port: TianjinAverage Response Time: ≤6.22h

AI-Powered supplier vetting

SummaryThe supplier specializes in the R&D, production, and sales of various steel products with a strong global presence, exporting to over 50 countries. They offer extensive customization and design services, supported by a professional sales and quality control team. However, they lack a written corrective and preventive actions mechanism and have just begun their foreign trade business. Their financial data indicates a recent startup phase with minimal revenue and profit margins.

Supplier typeThe supplier is primarily involved in the R&D, production, and sales of stainless steel, carbon steel, and galvanized steel products, offering metal cutting and processing services.

After-Sales capabilityThe company provides comprehensive after-sales support and has a team committed to efficient trade services, including after-sales support.

R&D capabilityThe supplier has strong R&D capabilities, offering extensive customization and 3D software design services. However, they lack SDK availability.

Production capacityThe supplier has production facilities equipped with complete supporting facilities for stable production and supply of steel products.

Customization capabilityThe supplier offers a wide range of customization options, including full and minor customization, and customization from samples and designs.

Client casesThe supplier has exported products to more than 50 countries, suggesting a well-established global customer base.

Product Q&A

Q:What are the available outer dimensions and wall thicknesses?

Outer dimensions range from 15x15mm to 600x600mm. Wall thicknesses range from 0.6mm to 30mm. Custom sizes are also available upon request.

Q:What standards do your galvanized square tubes comply with?

Our products strictly comply with international standards including ASTM A500, EN 10219, JIS G3466, AS/NZS 1163, and GB/T 6728.

Q:What is the Minimum Order Quantity (MOQ)?

The Minimum Order Quantity is 5 tons for standard orders, though some sources indicate 27 tons for specific commercial terms. Please confirm with sales for exact MOQ based on your requirements.

Q:What is the typical delivery time for orders?

The standard delivery time is 7-15 days. During peak seasons, lead time may extend to one month, while off-season lead time is within 15 workdays.

Q:Can you provide customization services for dimensions and coatings?

Yes, we offer full customization including outer dimensions, wall thickness, length, and zinc coating weight. We support customization from samples, designs, and minor adjustments.