What is the wind resistance capability?

The standard design supports wind speeds up to 23m/s, with options for snow and earthquake loads based on location.

Do you provide technical support during installation?

Yes, we supply all necessary technical support during installation and offer after-sales service.

What are the lead times for production?

Lead time is one month during the off-season and 1-3 months during the peak season.

Steel Structure Frame Manufacturing Plant (DG2-008)

Name: Steel Structure Frame Manufacturing Plant (DG2-008)
Brand: Qingdao Doublegrand Metal Products Co., Ltd.
SKU: 709108725

Shandong, ChinaQingdao Doublegrand Metal Products Co., Ltd.

US$30.00-65.00

200 Square Meters

Product profile

Customization

Available

After-sales Service

5 Years

Usage

Workshop

Model NO.

DG2-008

Surface Treatment

Zinc Coating, Spray-Painting, Ball Blasting

Welding Method

Auto Aubmerger Arc Welding, Hand Welding

Welding Test

Ultrasonic Testing, X-ray Testing

Painted Thickness

60-80um

Hot DIP Galvanized Thickness

80um

Material

Steel Structure

Certification

ISO

Customized

Warranty

5 Years

Transport Package

Bulk Shipment

Specification

Q235, Q345

Trademark

Double Grand

Origin

Qingdao, China

HS Code

7308900000

Production Capacity

3000 Tons

Key features

Customized Design: Fully customizable size, surface treatment, welding method, and panel options based on customer requirements.

Long Lifespan: Designed for over 25-50 years of service life with high durability.

High Safety Standards: Features high quake-proof, water-proof, and fire-proof capabilities with wind resistance up to 23m/s.

Fast Installation: Pre-assembled structure with detailed installation drawings for quick and easy on-site assembly.

Premium Surface Treatment: Options include hot-dip galvanizing (65-86um+) or multi-layer epoxy zinc rich primer with antirust paint.

Versatile Insulation: Wide selection of insulation materials including EPS, glass wool, rockwool, and PU with various thicknesses.

Comprehensive Support: Includes technical teams for design, fabrication, installation support, and after-sales service.

Durable Materials: Constructed with Q345B & Q235B steel and available aluminum-zinc sheet options.

Company profile

Qingdao Doublegrand Metal Products Co., Ltd.

Shandong, China

Business Type: Manufacturer/FactoryExport Year: 2003-07-29Nearest Port: Qingdao PortAverage Response Time: >24hTerms of Payment: LC, T/T, D/PInternational Commercial Terms(Incoterms): FOB, CFR, CIF, EXW

AI-Powered supplier vetting

SummaryQingdao Doublegrand Metal Products Co., Ltd. is identified primarily as a manufacturer/factory of steel structures and related prefabricated building products, although another record describes the company as a trading company. The supplier states that it has exported to more than 30 countries across six continents and began exporting in 2003. Its stated capabilities include design, manufacturing, delivery, installation, and after-sales service, with production equipment, two production lines, ISO 9001 certification, and dedicated quality-control and R&D personnel. It reports substantial annual production capacity and that 90% of sales are exports. The evidence supports strengths in certification, production, customization, export experience, and service scope. Financial credibility cannot be assessed because the available registered-capital information is excluded from consideration and no other financial evidence is provided.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory producing steel structures, warehouses, workshops, prefabricated buildings, and related products. However, a separate company-information record describes its company nature as a trading company, creating a classification inconsistency that prevents an entirely unqualified assessment.

CertificationsThe supplier reports holding ISO 9001 certification and also states that Asia Inspection, SGS inspection, and other third-party inspections are accepted. This is explicit evidence of a formal quality-management certification and willingness to accommodate external inspection.

After-Sales capabilityThe supplier states that it provides one-stop service covering design, manufacture, delivery, installation, and after-sales service, and describes a customer-oriented professional relationship. These statements directly support the existence of an after-sales service offering, although no detailed service standards or response metrics are provided.

R&D capabilityThe supplier reports that it can develop designs independently, provide suitable proposals, and combine sales and engineering personnel to create building models and designs. It also reports 6–10 years of R&D engineer experience and advanced CNC equipment, supporting design and engineering capability, but not necessarily product or process innovation beyond customization.

Production capacityThe supplier reports more than 3,000 tons of monthly capacity, annual capacity of 200,000 tons for steel structures, 200,000 meters of galvanized wall and roof cladding, and 30,000 tons of galvanized C&Z purlines. It also reports two production lines, CNC and machining equipment, inspection at every stage, and pre-assembly before delivery, providing explicit evidence of substantial production capability.

Customization capabilityThe supplier states that it manufactures strictly according to customer drawings and requirements, can design suitable proposals independently, and performs manufacturing and inspection according to drawings. These statements directly demonstrate both drawing-based production and supplier-supported design customization.

Client casesThe supplier states that it has exported to more than 30 countries across six continents, has more than 10 years of experience, and began exporting in 2003. This supports broad international delivery experience, but the slices do not identify specific customers, projects, or independently verifiable case details.

Product Q&A

Q:What is the expected lifespan of the steel structure?

The structure is designed for a lifespan of over 25-50 years depending on the surface treatment used.

Q:Can the design be customized?

Yes, we offer fully customized designs including size, surface treatment, welding methods, and panel types based on your requirements.

Q:What surface treatment options are available?

Options include hot-dip galvanizing (65-86um+) for 45-50 years warranty, or spray painting with epoxy zinc rich primer and antirust paint for 18-20 years warranty.

Q:How easy is the installation process?

The structure is pre-assembled before loading and comes with installation drawings to ensure easy and fast on-site assembly.

Q:What insulation materials can be chosen?

You can choose from EPS, glass wool, rockwool, or PU insulation with thicknesses ranging from 50mm to 150mm.