Powered by Made-in-China.com
Construction Design Steel Structure Fabrication Project (DG3-027)
US$40.00-70.00
200 Square Meters
Product profile
Customization
AvailableUsage
WorkshopSurface Treatment
Zinc Coating, Spray-Painting, Ball BlastingModel NO.
DG3-027Welding Method
Auto Aubmerger Arc Welding, Hand WeldingWelding Test
Ultrasonic Testing, X-ray TestingPainted Thickness
60-80umHot DIP Galvanized Thickness
80umMaterial
Steel StructureCertification
ISOTransport Package
Bulk Shipment, Packed in 40ot and 40hqTrademark
Double GrandOrigin
Qingdao, ChinaHS Code
7308900000Production Capacity
3000 TonsCompany 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
Structural Steel Fabrication and Civil Engineering Industrial Building Construction and Project Management
US$60.00-120.00
1 Piece(MOQ)
Robust Steel Structure Factory Workshop and Warehouse Construction Projects
US$18.90-46.00
500 Square Meters(MOQ)
South Africa Steel Pipe Workshop Project
US$50.00-100.00
1 Square Meter(MOQ)
High-Performance Modular System with ISO Class Certification Cleanroom Project
US$3,000.00-4,000.00
1 Piece(MOQ)
Marya Pharmaceutical Hospital Lab Cosmetic Dust Free Turnkey Clean Project Supplier Manufacturer
US$30.00
1 Square Meter(MOQ)
Steel Structure High-End Food Industrial Park Construction Project
US$35.00-85.00
1,000 Square Meters(MOQ)
Innovative Airlock System Cosmetic Research Laboratory Cleanroom Project
US$3,000.00-4,000.00
1 Piece(MOQ)
Low Cost EPS Sandwich Panel School Steel Structure House Project in Bangladesh
US$35.00-55.00
100 Square Meters(MOQ)
Marya ISO Standard Pharmaceutical HVAC System Air Conditioning System Clean Project
US$30.00
1 Square Meter(MOQ)
China Made Factory Wholesale Prefab School Buildings Projects for Temporary Residence Hospital
US$30.00-45.00
100 Pieces(MOQ)
Tailored Dimensions for Prefabricated Steel Structure Workshop Projects
US$35.00
100 Square Meters(MOQ)
New Popular Prefabricated Steel Structure Workshop Projects with CE Certifications
US$35.00-55.00
100 Square Meters(MOQ)
Premium Seamless Panel Modular Cleanroom Project with High Stability
US$3,000.00-4,000.00
1 Piece(MOQ)
Guangdong Manufacturers Prefab Project Ideas for Steel Workshop Made in China
US$25.00-55.00
100 Square Meters(MOQ)
Marya Pharmaceutical GMP Standard ISO5/6/7 Standard HVAC System Clean Project China Supplier
US$30.00
1 Square Meter(MOQ)
Stable Steel Plant Project (DG2-030)
US$40.00-80.00
200 Square Meters(MOQ)
Marya Advanced Air Filtration Modular Cleanroom Project with CE Certification for Pharmaceutical Industry
US$98.00-100.00
1 Square Meter(MOQ)
Light Steel Prefab Chicken House
US$35.00
1 Piece(MOQ)
Easy to Assemble High Quality Complete System Steel Chicken Poultry House
US$30.00-60.00
100 Square Meters(MOQ)



















