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Q345b Cold Drawn Seamless Steel Tube Custom Cut Length Structural Pipe for Engineering Construction
US$660.00
1-4 Tons
US$640.00
5-9 Tons
US$620.00
10+ Tons
Product profile
Customization
AvailableAfter-sales Service
Online Technical Support, After-Sales Service forType
SeamlessModel NO.
Q345B Cold Drawn Seamless Steel TubeTechnique
Cold DrawnMaterial
Carbon SteelSurface Treatment
Black/ Oiled/ Anti-Rust PaintedUsage
Hydraulic/Automobile Pipe, Machinery Industry, Construction & DecorationSection Shape
RoundMaterial Grade
Q345b Carbon Structural SteelProcessing Service
Cutting, MachiningApplication
Mechanical Processing, Construction StructureStandard
GB/T8162Transport Package
Steel Bundles with Straps, Wrapped by Waterproof WSpecification
OD: 16-426mm, WT: 2.5-40mm, Length: 6m/9m/12mTrademark
OEM & ODM AcceptableOrigin
Jiangsu, ChinaHS Code
7304319000Production Capacity
30000tons/YearKey features
Customizable Material Grades: Available in 20#, 45#, Q235B, Q355B, S235JR, S355JR with customizable options.
Flexible Cutting Service: We provide cutting to custom fixed lengths with deburring available upon request.
Wide Dimension Range: Outer diameter 10mm to 630mm and wall thickness 2mm to 60mm with customized sizes.
Multiple Surface Treatments: Options include black finish, shot blasting, painting, and anti-rust oil based on requirements.
Strict Quality Control: Each batch undergoes chemical composition analysis and mechanical property tests with MTC provided.
OEM & ODM Acceptable: We support customization from samples and designs with dedicated R&D engineers.
Fast Delivery for Regular Sizes: Regular sizes delivered within 7-15 working days; custom sizes subject to production schedule.
Versatile Application Scope: Suitable for mechanical manufacturing, construction, fluid delivery, automotive, and mining industries.
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 1 Year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.15h
AI-Powered supplier vetting
SummaryChangchen operates in metal materials, special steel, forgings, powder metallurgy, metal processing machinery, and cutting services. It reports customization from samples and designs, ODM availability, recent new-product development, CAD/PS-related R&D capability, and documented R&D inputs, outputs, reviews, verification, and validation. Production-related evidence includes valid contracts with associated subcontractors, inventory capability, raw-material traceability, and 100% finished-product inspection; however, only one quality inspector is reported. The supplier states that products can meet several national and international standards, but no specific certifications are identified. Overseas support is limited: there are no overseas agents or branches, warehouses, showrooms, or stated overseas service countries. Lead time is reported as within 15 working days in both peak and off-season. Financial information is insufficient for a reliable assessment, and no customer cases are provided.
Supplier typeThe supplier’s stated business scope covers sales of metal materials and products, special steel, forgings, powder metallurgy products, recycled resources, metal-processing machinery, and metal cutting services. This supports classification as a metal-material and metal-processing supplier, although the slices do not establish a more specific legal or manufacturing classification.
R&D capabilityThe supplier reports new products during the past year, R&D responsibilities covering new-product development, design drawings, production technical support, and customer specifications, plus CAD and PS software capability. It also has auditable R&D design-input, output, review, verification, and validation documentation, although no SDK is available.
Production capacityProduction-related evidence includes sawing and cutting equipment, metal cutting and processing activities, inventory capability, valid manufacturing contracts with associated subcontractors, raw-material traceability, and 100% finished-product inspection. The reported quality-control staffing is one inspector, while supplier-management procedures have no records, so capability is supported but operational depth is limited.
Customization capabilityChangchen explicitly provides customization from samples and designs, offers ODM services, and states that customized services can be developed according to customer requirements. Its R&D role includes preparing product specifications for customer approval, providing direct evidence of customer-oriented customization capability.
Product Q&A
Q:What is the difference between carbon structural seamless steel pipe and fluid seamless steel pipe?
A:
Carbon structural seamless pipe (GB/T8162) is mainly used for mechanical structure and engineering load-bearing parts, not for pressure fluid transportation. Fluid seamless pipe is specially designed for conveying medium with pressure.
Q:Can you cut the seamless steel pipe according to our required length?
A:
Yes, we provide cutting service. We can cut pipes to your custom fixed length, and deburring is available upon request.
Q:What kind of surface treatment can you supply?
A:
Normally we supply black hot rolled finish. We can also offer shot blasting, painting or anti-rust oil as customer requirements.
Q:How to guarantee the quality of your carbon seamless steel pipes?
A:
Each batch will carry out chemical composition analysis and mechanical property test. Mill test certificate (MTC) can be provided before shipment.
Q:What is your delivery time?
A:
For regular sizes, delivery is about 7-15 working days. Custom non-standard sizes need longer lead time, subject to actual production schedule.
Send Inquiry
*To:
Jiangsu Changchen Materials Co., Ltd.
Jiangsu Changchen Materials Co., Ltd.*Content:
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