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Black Carbon Steel Square Tube for General Mechanical Structure Pipe
US$620.00
1-9 Tons
US$600.00
10-49 Tons
US$550.00
50-99 Tons
US$520.00
100+ Tons
Sample price:US$10.00/branch.Request sample
Product profile
Customization
AvailableAfter-sales Service
24-Hour Customer Service ResponseWarranty
12 MonthsModel NO.
10-300mmType
SeamlessTechnique
Hot RolledMaterial
Carbon SteelSurface Treatment
BlackUsage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special PurposeSection Shape
SquareBrand
Shandong JingshangProduct Name
Seamless Steel TubeAdvantage
Quality+Competitive Price+Professional ServiceSurface
Bare Pipelines, Rust Proof CoatingDelivery Time
7-21 DaysTransport Package
Standard Export Sea Suitable PackagingSpecification
customizableTrademark
Original factoryOrigin
Liaocheng, Shandong, ChinaProduction Capacity
20000tonsKey features
Seamless Construction: One-piece structure with continuous metal flow, leak-proof and crack-resistant under high pressure.
Customizable Dimensions: Sizes from 20x20mm to 400x400mm, wall thickness 1-20mm, and lengths tailored to customer requirements.
High Bending Resistance: Square section design offers superior bending and torsion resistance for structural stability.
Wide Material Selection: Available in carbon steel, alloy steel, and stainless steel grades like Q345, 304, and 316.
International Certifications: Compliant with ASTM, DIN, EN, and GB standards; certified by ISO9001, SGS, and CE.
Anti-Corrosion Options: Available in black, hot-dip galvanized, painted finishes, and FBE internal coatings.
Flexible OEM/ODM: Supports customized processing including cutting, bending, drilling, and surface treatments.
Fast Production Lead Time: 7-12 working days for standard orders; 15-25 days for customized orders.
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Flexible customization CertifiedExport Year: 2 years CertifiedNearest Port: QingdaoAverage Response Time: ≤3.29h
AI-Powered supplier vetting
SummaryShandong Jingshang Steel Pipe Co., Ltd. is a China-based limited company established in 2017, with 28 employees, more than 10 production lines, inventory capability, and stated annual output information. It demonstrates flexible customization, 3D software design services, professional technical supplier status, and new product development during the past year. Quality controls include finished-product inspection instructions, quality assurance, and raw-material traceability. However, the supplier has no management-system certification, lacks written records for complaint handling and corrective/preventive actions, and has no written procedures or records for effective supplier-service assessment. Manufacturing capacity is not supported by a valid contract with affiliated subcontractors. Overseas support is limited, with no overseas warehouse, showroom, agent, branch, or offline trade-show participation. Export activity and self-operated import/export rights are indicated, but export experience is stated...
Supplier typeThe supplier is identified as a professional technical supplier and a combined limited company, with a business scope covering metal-material manufacturing, bearing-steel production, and import/export activities. This supports classification as a manufacturing and technical supplier rather than only a trading intermediary.
CertificationsSupplier management-system certification is explicitly recorded as NIL. Although quality assurance and raw-material traceability are present, no formal management-system certification is evidenced.
R&D capabilityThe supplier is identified as a professional technical supplier, provides 3D software design services, offers flexible customization through R&D, and reportedly launched new products during the past year. These are explicit indicators of active technical and product-development capability.
Production capacityThe supplier reports more than 10 production lines, 20 professional technicians, over 100 workers in its company description, inventory capability, uniformly followed finished-product inspection instructions, and peak/off-season lead times within 15 working days. However, the manufacturing-capacity arrangement with affiliated subcontractors lacks a valid contract, creating a documented governance weakness despite the stated production resources.
Customization capabilityThe supplier explicitly customizes materials and specifications according to customer needs, samples, and drawings. Its R&D capability also provides flexible customization and 3D software design services, directly supporting customized product development.
Product Q&A
Q:What are your main cooperation models for seamless steel pipes?
A:
We provide flexible and diversified cooperation modes to meet diverse customer demands, mainly including long-term strategic procurement, customized OEM production, sample trial orders, and regional agency distribution. For large-volume buyers and long-term partners, we will design exclusive cooperation plans, and offer supporting benefits like priority production, fixed price protection and bulk order discounts.
Q:What is the minimum order quantity (MOQ) for seamless steel pipe orders?
A:
For conventional standard seamless steel pipes, the MOQ is 1 ton for trial orders, and 5 tons for formal bulk orders. For customized products with special materials, non-standard sizes or special processing requirements, the MOQ can be adjusted flexibly based on specific production conditions, and we support small-batch trial orders for new cooperative customers.
Q:How long is the production lead time for bulk seamless steel pipe orders?
A:
After receiving the advance payment and confirming all order details, the production cycle for conventional standard seamless steel pipes is 7-12 working days. For customized orders with special heat treatment, surface treatment or complex processing, the lead time will be 15-25 working days. We will send regular production progress updates to ensure on-time delivery as scheduled.
Q:What materials and specifications of seamless steel pipes do you supply?
A:
We manufacture seamless steel pipes with premium materials including 10# steel, 20# steel, 45# carbon steel, Q355B low-alloy steel, 304/316 stainless steel. The conventional specifications cover outer diameter from 4mm to 620mm, wall thickness from 0.5mm to 100mm, and we can customize full range of non-standard sizes per customer drawings. Our products feature high dimensional accuracy, smooth inner and outer surfaces, no welding seams, excellent pressure resistance and stable mechanical propert
Q:Do you provide customized processing services for seamless steel pipes?
A:
Yes, we offer a complete set of customized processing services, such as fixed-length cutting, double-end chamfering, bending, drilling, tapping, surface galvanizing, phosphating, bright annealing, sandblasting and heat treatment. Customers only need to provide detailed product drawings, technical parameters or application scenarios, and our professional technical team will develop targeted production and processing solutions to meet your personalized needs.
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