Powered by Made-in-China.com
Welded H Beams, Columns, Girders in Steel Structure
US$500.00-1,000.00
10 Tons
Product profile
Customization
AvailableAfter-sales Service
5 YearsWarranty
5 YearsModel NO.
DG-M1Surface Treatment
Galvanized,PaintedTreatment Method
Hot RolledSize
400*200,450*150,450*200,500*150 Ect.Connection
BoltTransport Package
BulkSpecification
Q235, Q345Trademark
DGOrigin
ChinaHS Code
7308900000Production Capacity
20000ton/YearCompany profile

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.
Send Inquiry
*To:
Qingdao Doublegrand Metal Products Co., Ltd.
Qingdao Doublegrand Metal Products Co., Ltd.*Content:
Supplier replies will be sent to your registered email
You may also like
Pultruded FRP GRP Shaped Section Floor Beam Strut Girder
US$0.20-55.00
500 Meters(MOQ)
Zhongtian Polybett High Pressure Laminate Sheet Phenolic Laminate Board HPL Panel
US$5.60-6.00
100 piece(MOQ)
Easy Installation Tunnel Fiber Cement Decorative Composite Panel
US$12.00-100.00
100 Pieces(MOQ)
Lowcost Lightweight Concrete Wall Panel for Housing
US$10.00
300 Square Meters(MOQ)
Thermal Insulation AAC Acc Alc Panel with Codemark for Australian Market
US$8.00-35.00
100 Square Meters(MOQ)
High Quality Explosion-Proof Fiber Cement Tunnel Panel for Military Shelter Linings
US$12.00-100.00
100 Pieces(MOQ)
Eastland Exterior Wall AAC Panel Acc Alc Wall Cladding with Waterproof & Insulation
US$8.00-35.00
100 Square Meters(MOQ)
Environmentally Friendly 20-40dB Sound Insulation Tunnel Decorative Architectural Wall Panels
US$12.00-100.00
100 Pieces(MOQ)
Sound Absorbing Sandwich Wall Panel Acoustic Fire Rated Rock Wool Sandwich Panels
US$8.00
1,000 Meters(MOQ)
12mm Phenolic Laminate Board Decorative HPL Panel
US$60.00-120.00
60 piece(MOQ)
Quick Installation Acc AAC Panel Concrete Alc Wall Panel for Commercial Building
US$8.00-35.00
100 Square Meters(MOQ)
Pre-Finished Fire Rated Decorative Water Resistant Tunnel Panel for Rapid Transit Stations
US$12.00-100.00
100 Pieces(MOQ)
Lightweight Concrete Exterior/Interior AAC/Alc Wall Panel
US$8.00-35.00
100 Square Meters(MOQ)
Panels Waterproof Wood Textured OSB Cheap Weight of Furniture Sheet Flakeboard Chipboard Melamine Particle Board
US$3.00-10.00
500 Pieces(MOQ)
Lower Price Wall Panel Sandwich Acoustic Wall Panel
US$8.00
1,000 Meters(MOQ)
Outdoor Wall Cladding PVDF Aluminum Composite Panel (1220*2440*4mm) (ALB-008)
US$6.00-16.00
600 Square Meters(MOQ)
Panels Waterproof Wood Textured OSB Cheap Weight of Furniture Sheet Flakeboard Chipboard Melamine Particle Board
US$2.00-28.00
500 Pieces(MOQ)
Aluminum Honeycomb Panel Acoustic Sandwich Wall Panel for Ceiling
US$8.00
1,000 Meters(MOQ)
Zhongtian Polybett Phenolic Laminate Toilet Door Panel
US$60.00-120.00
60 piece(MOQ)
Factory Price Wood Plastic Composite WPC Wall Board Exterior Wall Panel
US$1.10-1.50
100 Meters(MOQ)



















