Is the steel suitable for cold climates?

Yes, Q355B is widely used in cold places like Russia for steel structures and houses.

What is the thickness tolerance?

The thickness and outer diameter tolerance is +/- 0.25mm.

Premium Q355b Square Steel Hollow Section 200X200mm, 6m Length

Name: Premium Q355b Square Steel Hollow Section 200X200mm, 6m Length
Brand: Qingdao Wanrunda Imp and Exp Co., Ltd.
SKU: 1951922502

Shandong, ChinaQingdao Wanrunda Imp and Exp Co., Ltd.

US$950.00

20 Tons

Product profile

Customization

Available

After-sales Service

Provide

Warranty

1year

Model NO.

200x200x8mm

Type

Welded

Technique

ERW

Material

Alloy Steel

Surface Treatment

Black

Usage

Construction & Decoration

Section Shape

Square

Size

200X200mm

Thickness

8mm

Length

6meters

Steel Grade

Q355/16mn/St52/S355jrh

Yield Strength

345MPa - 355MPa

Transport Package

Bulk Packing, Anti-Rust Oil Covered

Specification

200x200x8mm x 6meters

Trademark

Wanrunda

Origin

Shandong

HS Code

7306610000

Production Capacity

2000mt Per Year

Key features

High-Strength Material: Made of Q355B alloy steel with yield strength 345-355MPa, superior to Q235.

Customizable Dimensions: Accept fixed length orders and various sizes from 10x10 to 600x600mm.

Anti-Corrosion Surface: Features anti-rust oil coating with black surface finish for durability.

Wide Application Range: Suitable for construction, steel structures, machinery, and cold climate projects.

Fast Delivery: Delivery within 15-20 days after receiving deposit.

Strict Tolerance Control: Thickness and OD tolerance maintained within +/- 0.25mm.

Global Export Experience: Exported to Russia, India, Australia, and over 20 countries since 2008.

Flexible Payment Terms: Accept T/T or L/C at sight for secure transactions.

Company profile

Qingdao Wanrunda Imp and Exp Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2008-09-18Nearest Port: Qingdao Port, Tianjin port, Shanghai PortAverage Response Time: ≤15hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF

AI-Powered supplier vetting

SummaryQingdao Wanrunda Imp and Exp Co., Ltd. is identified as both a trading company and manufacturer/factory based in Shandong, China. It reports five production lines and listed annual capacities totaling 1,600 tons across steel products, including steel fences, trellises, plates, coils, pipes, and sections. The supplier states that 90% of sales are exports, has held exporting activity since 2008, and possesses self-operated import and export rights. ISO 9000 and ISO 9001 management-system certifications are reported. Its capabilities include punching, bending, welding, galvanizing, electrostatic spraying, powder coating, painting, and oiling, with manufacturing to ASTM, JIS, DIN, and API standards. Evidence is insufficient to assess after-sales service execution, financial credibility, innovation strength, and customer cases.

Supplier typeThe supplier is explicitly classified as both a trading company and manufacturer/factory. It is a China-based limited company in Shandong and reports self-operated import and export rights, with exporting activity beginning in 2008.

CertificationsThe supplier reports holding ISO 9000 and ISO 9001 supplier management-system certifications. These stated certifications provide explicit evidence of formal quality-management credentials.

Production capacityThe supplier reports five production lines and stated annual capacities of 200 tons for steel fence and guardrail, 300 tons for angle-steel and grape trellis, 100 tons for self-nail steel plates and hanger straps, and 500 tons each for steel angles/flat/coil/plate/stainless steel and steel pipe/hollow section/alloy steel. These figures explicitly demonstrate multi-product manufacturing capacity.

Customization capabilityThe supplier states that it has its own processing equipment and can perform punching, bending, welding, galvanizing, electrostatic spraying, powder coating, painting, and oiling. It also states that products can be manufactured according to ASTM, JIS, DIN, and API standards, supporting customized processing and specification compliance.