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Din internally and externally galvanized steel
DIN internally and externally galvanized steel is cold-drawn seamless tubing with zinc coating applied to both inner and outer surfaces, conforming to DIN 2393 standards for precision steel tubes. The base material is typically C35 or St37.4 carbon steel, with wall thicknesses ranging from 0.8 mm to 5.0 mm and outer diameters from 6 mm to 150 mm. The galvanization process uses hot-dip or electro-galvanizing methods to achieve a minimum zinc layer of 15 g/m² per surface.
The dual coating provides corrosion resistance suitable for humid, outdoor, or chemically exposed environments. The cold-drawing process ensures tight dimensional tolerances, typically ±0.05 mm on diameter and ±10% on wall thickness. Surface finish is smooth and free of flaking, with a uniform crystalline zinc appearance. This steel is not stainless but relies on zinc sacrificial protection, making it suitable for structural and mechanical applications where cost-effective durability is required.
This product is purchased by manufacturers of hydraulic cylinders, pneumatic systems, agricultural machinery, and automotive components requiring precise bore dimensions and rust protection. Buyers typically order in lengths of 5 to 6 meters, cut to size, with packaging in wooden crates or plastic-wrapped bundles. Trade terms are commonly FOB Shanghai, with lead times of 3 to 5 weeks after order confirmation. Documentation includes material test reports and zinc coating weight verification.
| Base Material | C35 or St37.4 carbon steel |
| Outer Diameter Range | 6 mm to 150 mm |
| Wall Thickness Range | 0.8 mm to 5.0 mm |
| Diameter Tolerance | ±0.05 mm |
| Wall Thickness Tolerance | ±10% |
| Zinc Coating Weight (External) | Minimum 15 g/m² |
| Zinc Coating Weight (Internal) | Minimum 15 g/m² |
| Typical Length | 5 m to 6 m, cut to order |
| Surface Finish | Smooth, uniform zinc crystalline appearance |
| Compliance Standard | DIN 2393 |
Shanghai Tianyang Steel Tube Co., Ltd is a manufacturer located in Qianqiao, Fengxian District, Shanghai, China, specializing in precision steel tubing. The company operates a facility with cold-drawing lines and galvanizing tanks for producing internally and externally coated tubes. The listing provides no details on years in business, workforce size, or certifications, and no response history is recorded on the platform.
The supplier is classified as imported with harbor trust tier, indicating verified export activity but no public audit reports, quality management system certifications, or client references. Product focus appears limited to standard DIN tubes with dual galvanization, with no evidence of custom alloy development or surface treatment services. Buyers must request material test reports and coating weight verification for each order.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Sourcing DIN internally and externally galvanized steel from Shanghai Tianyang Steel Tube Co., Ltd - China Import Guide
Before ordering, confirm the base steel grade (C35 or St37.4) and request a material test report showing tensile strength, elongation, and chemical composition. Verify the zinc coating weight on both surfaces with an ISO 1460 test report, not just a supplier statement. Inspect the inner surface of a sample tube for uniformity and absence of zinc buildup or bare steel spots.
Confirm the Incoterms - commonly FOB Shanghai - and clarify who arranges export customs clearance. Lead times are typically 3 to 5 weeks, but production scheduling can delay shipment. Payment terms are often T/T 30% deposit, 70% before shipment. Request a shipping schedule and container loading plan to ensure proper stacking and moisture protection during transit.
Perform incoming inspection using a visual check for coating uniformity, surface defects, and end squareness. Use a magnetic thickness gauge to measure zinc on both surfaces at multiple points. Retain a sample from each batch for future reference. Request a certificate of conformity with each shipment, including batch number, dimensions, coating weight, and compliance with DIN 2393.
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30 suppliersBuy & Import Din Internally And Extern — Wholesale Supply from China
Securing a reliable supply chain for Din Internally And Externally Galvanized Steel is critical for maintaining your business operations. Shanghai Tianyang Steel Tube Co., Ltd, a supplier located in China, provides high-quality Din Internally And Extern ready for international export. By connecting directly with this supplier, buyers can bypass intermediaries, negotiate custom wholesale pricing, and arrange bulk shipments. This product is a key offering within the Steel Pipes industry, catering to distributors, wholesalers, and importers worldwide.
Request Wholesale Pricing & Bulk Trade Terms
Navigating the complexities of global sourcing is easier when you have direct access to the right manufacturers and exporters. When importing Din Internally And Extern from China, buyers can discuss shipping logistics, packaging requirements, and preferred payment terms directly with Shanghai Tianyang Steel Tube Co., Ltd. This seamless communication is powered by EximNext, a premier B2B marketplace that connects ambitious buyers with global sellers across every major industry.
About Shanghai Tianyang Steel Tube Co., Ltd — Supplier in China
We understand that verifying supplier credentials is a top priority for importers. Shanghai Tianyang Steel Tube Co., Ltd is part of our extensive network of vetted international exporters. Browse more products in the Steel Pipes category or discover new suppliers across the Steel Pipes sector. Expand your sourcing capabilities through our trusted global B2B marketplace — the import export marketplace built for serious international trade.
International Shipping & Import Guidelines for Din Internally And Extern
When importing Din Internally And Extern from China, buyers should consider shipping terms (FOB, CIF, EXW), customs documentation requirements, and payment security. Contact the supplier to discuss the best logistics options for your destination country.
Frequently Asked Questions About Din Internally And Extern
How can I get the wholesale price for Din Internally And Externally Galvanized Steel?
Click the "Request Quotation" button to contact Shanghai Tianyang Steel Tube Co., Ltd directly. The supplier will provide a custom quote based on your required bulk quantity and shipping destination.
Can I buy Din Internally And Extern in bulk from China?
Yes, Shanghai Tianyang Steel Tube Co., Ltd provides Din Internally And Extern for bulk export from China. You can negotiate the MOQ, packaging details, and shipping terms directly with the supplier.
What shipping terms are available for this product?
Shipping terms such as FOB, CIF, or EXW can be negotiated directly with Shanghai Tianyang Steel Tube Co., Ltd. Contact the supplier to discuss the best logistics options for importing Din Internally And Extern to your country.
How do I request a sample of Din Internally And Externally Galvanized Steel?
Send a direct message to Shanghai Tianyang Steel Tube Co., Ltd through our platform to request a product sample before committing to a large wholesale order.
Is it safe to source products from this supplier?
Shanghai Tianyang Steel Tube Co., Ltd is a registered supplier on EximNext. Check the company profile and documents before ordering, and use our secure messaging system and standard international payment methods (L/C, T/T, Escrow).
What specifications should I ask for when importing Din Internally And Extern?
Request a detailed product data sheet including grade, purity, dimensions, material composition, and applicable industry standards from Shanghai Tianyang Steel Tube Co., Ltd.
Does Shanghai Tianyang Steel Tube Co., Ltd offer custom packaging or private labeling?
Many suppliers on EximNext, including Shanghai Tianyang Steel Tube Co., Ltd, offer custom packaging and private label options for bulk wholesale orders.
What payment methods are accepted for international orders?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services.
Can I find more Steel Pipes suppliers on EximNext?
Yes, EximNext hosts a wide network of Steel Pipes manufacturers, exporters, and wholesalers across 200+ countries.
How do I contact Shanghai Tianyang Steel Tube Co., Ltd for a bulk trade inquiry?
Click "Request Quotation" or "Contact Supplier" on this page. Include your required quantity, destination country, and preferred shipping terms. All communications are managed securely through our B2B marketplace.
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