Powered by Made-in-China.com
High-Quality GB/T 6728 Square Tube for Reliable Construction Use
US$350.00-500.00
5 Tons
Product profile
Customization
AvailableType
WeldedTechnique
ERW Hot Rolled Square TubeModel NO.
Q235B, Q355B, A500, S235JRMaterial
Carbon SteelSurface Treatment
Black Bare, Hot Dipped GalvanizedUsage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special PurposeStandard
GB, ASTM, En, JISGrade
Q235B, Q355b, A500, S235jrSection Size
CustomizedWall Thickness
1.0mm-20.0mmLength
6m,9m,12m, CustomizedMOQ
5 TDelivery Time
7-15 Working DaysSample Policy
Free Sample Available, Freight CollectProcessing Service
Cutting, Punching, Welding, BendingSupply Ability
10000 Tons/MonthPrice Terms
Fob Qingdao, CIF, EXWTransport Package
Standard Seaworthy PackingTrademark
KANGHONGOrigin
Shandong, ChinaHS Code
7306309000Production Capacity
500000 TonCompany profile
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: ≤5.33h
AI-Powered supplier vetting
SummaryThe supplier is explicitly identified as a professional technical supplier specializing in stainless steel, carbon steel, galvanized steel, metal processing, and related products. It provides 3D software design and multiple forms of customization, including sample-based, design-based, full, minor, and flexible customization. Production is supported by factories with complete facilities, while stated quality controls include batch testing, quality assurance, and raw-material traceability. However, finished products are also described as being checked by packing staff, and no written corrective-action or complaint-handling procedures are available. The supplier states that it has exported to more than 50 countries, but another slice says foreign trade has just begun, creating inconsistency in export-history evidence. No certification information or sufficient evidence of financial credibility is provided. SDK availability is explicitly absent.
Supplier typeThe supplier is explicitly described as a professional technical supplier and as a manufacturer and seller of stainless steel, carbon steel, galvanized steel, metal products, mechanical parts, and related materials. Its registered business scope also includes metal cutting processing and import/export activities, supporting classification as a technical metal-product supplier.
After-Sales capabilityThe supplier states that it provides after-sales support and timely after-sales service through its international sales team, and presents customer-oriented service as a business principle. However, it also reports no written procedures or records for handling customer complaints or corrective and preventive actions, so the formal robustness of after-sales management is not demonstrated.
R&D capabilityThe supplier is identified as having professional technical R&D capability and offers 3D software design services with multiple customization modes. However, it explicitly has no available SDK, so the evidence supports product and design development capability but not software-development integration capability.
Production capacityThe supplier states that its production factories are located in other cities with complete supporting facilities and that it specializes in producing steel coils, sheets, pipes, mechanical parts, and related products. Quality assurance, batch testing, and raw-material traceability are also stated, although one slice says finished products are checked by packing staff, indicating that the detailed final-inspection structure is not fully clear.
Customization capabilityThe supplier explicitly offers customization from samples, customization from customer designs, full customization, minor customization, and flexible customization. Its sales team also states that it supports order customization, providing direct evidence of broad customization capability.
Send Inquiry
*To:
Shandong Kanghong Manufacturing Co., Limited
Shandong Kanghong Manufacturing Co., Limited*Content:
Supplier replies will be sent to your registered email
You may also like
S235jr S355jr Pre-Galvanized Square Steel Tube 60X60mm GB/T 6728 for Greenhouse Frames
US$600.00-650.00
1 Ton(MOQ)
High-Quality Q235B Carbon Steel Square Tube for Global Market
US$350.00-500.00
5 Tons(MOQ)
ASTM A500 Carbon Steel Square Tube 50*50mm- High Strength for Structural Use
US$400.00-550.00
1 Ton(MOQ)
Premium Quality GB/T 6728 Square Tube for Building Framework
US$350.00-500.00
5 Tons(MOQ)
Factory Square Tubes for Construction Galvanized Steel Tube
US$502.00-510.00
1 Ton(MOQ)
High-Quality Square Seamless Steel Pipe Tube for Industrial Use
US$550.00-750.00
3 Tons(MOQ)
60X80mm Black ERW Rectangular Steel Tube Q235 Q355 GB/T 6728 for Agricultural Frames
US$500.00-550.00
1 Ton(MOQ)
High-Quality ASTM Compliant Tubes for Reliable Industrial Use
US$590.00-620.00
10 Tons(MOQ)
Durable Galvanized Square Tube for Construction and Decoration
US$600.00
25 Tons(MOQ)
Factory-Direct: High-Quality Galvanized Square Tubes for Outdoor Use
US$580.00-620.00
1 Ton(MOQ)
Zinc Coated Square Steel Tube for Outdoor Construction and Fence
US$600.00
25 Tons(MOQ)
Durable GB/T 6728 Square Tube for Transmission Line Towers
US$499.00-599.00
10 Tons(MOQ)
High-Quality Custom Carbon Steel Tubes for Industrial Use
US$900.00-1,000.00
1 Ton(MOQ)
60X60mm GB/T 6728 Q355 Hot-DIP Galvanized Square Steel Tube Cut to Length for Structural Frames
US$600.00-650.00
1 Ton(MOQ)



















