Polished Galvanized Steel Pipe for Construction with ASTM/En Standards

WENZHOU SINCO STEEL (ZHEJIANG TSINGCO PIPING TECHNOLOGY Co., Ltd) 

What Can You Get by Choosing Us? —— Procurement Guarantee from a 16-Year Experienced Manufacturer
Hello! If you are looking for a reliable supplier of stainless steel seamless pipes and supporting piping components, WENZHOU SINCO STEEL CO. Ltd may be your ideal choice. based in Wenzhou, China, we have focused on this field for 16 years, providing "one-stop procurement" services from stainless steel seamless pipes, tubes to full-range components such as fittings, elbows, flanges and valves — no need to cooperate with multiple suppliers, you can get all your needs with one order, greatly reducing communication costs and procurement cycles.

Worried about substandard quality? We use solid strength to eliminate your concerns:
Our modern factory is equipped with a full set of advanced testing equipment including mechanical property testing machines, ultrasonic flaw detectors and eddy current testers, with strict control over every production process; we have also obtained multiple domestic and international authoritative certifications such as ISO 9100/14004/45001, CE, ABS, BV, CCS. If you need, you can also invite third-party institutions such as SGS, TUV and DNV to conduct on-site inspection, ensuring every batch of products you receive meets international standards without quality risks.
Want to expand the global market or adapt to specific fields? Our cooperation and applications are extensive:
Adhering to the concept of "Customer-Oriented, Quality-based", we always adhere to the commitment of integrity. At present, we have established stable cooperation with customers in more than 100 countries around the world. Whether your products are used in chemical & petrochemical, oil & gas extraction, shipbuilding, or nuclear power, food processing, aerospace and other fields, our products can be accurately adapted to provide reliable support for your business development.

Professional Equipment Escorts, Quality Controllable Throughout the Process
We are equipped with mechanical property testing machines, ultrasonic testing machines, eddy current testing machines, hydrostatic testing machines, as well as chemical composition spectrometers for accurate material detection. From parameter monitoring during production to comprehensive inspection before finished products leave the factory, these equipments form a complete quality control loop, ensuring that each batch of products meets standards and providing solid guarantee for the final quality.
Rich Product Options to Meet Diverse Needs
In terms of product categories, we offer a variety of choices: covering flat steel, square steel, square tubes, hexagonal steel, round steel, steel pipes, steel wires, steel plates, steel coils and other styles. At the same time, we can meet different material needs. Whether it is regular procurement or application in specific scenarios, you can find a suitable solution.

Say Goodbye to Hassle, Experience One-Stop Customized Services

Is your project constrained by non-standard sizes or special materials? Is managing multiple suppliers consuming your valuable time and energy?

Our Solution:
From 304/L, 316/L, 321, 310S to duplex steels, we offer flexible customization in both material and dimensions. With just one communication, we handle everything from quotation and production to quality inspection and logistics.

You Will Gain:

Time-Saving: No need to seek quotes from multiple sources or coordinate with various parties—one point of contact for all your needs.
Worry-Free: Full process quality control, clear accountability, and no buck-passing.
Cost Reduction: Streamlined processes directly lower your overall procurement costs.
Contact our sales team now to get your customized solution!

High-Quality Material Guarantee

Precision Manufacturing Process

Adopt food-grade & industrial-grade stainless steel raw materials (304/316L), rust-resistant & high-temperature resistant, compliant with international standards like ASTM/GB, suitable for chemical, construction, water treatment and other scenarios.

Seamless forming technology + CNC finishing, pipe diameter tolerance ≤0.1mm, smooth surface without burrs, ensuring smooth fluid transportation and reducing pressure loss.

Full-Process Quality Inspection

Customized Service Support

Export Advantages

Equipped with mechanical property tester, ultrasonic flaw detector, hydrostatic testing machine, 100% inspection for each batch; support third-party inspection (SGS/BV/TUV), quality traceable.

Customizable pipe diameter (Φ10mm-Φ325mm), wall thickness (1mm-12mm), length & surface treatment (brushed/polished) as per customer needs, flexible MOQ, export packaging anti-collision.

16 years of professional manufacturing experience, products exported to 100+ countries (Africa, Southeast Asia, Middle East, Eastern Europe), familiar with import customs clearance procedures of various countries, able to provide full customs documents like CO, FORM A.

Packing & Delivery

Stainless Pipes' Protective Pkg:

Efficient Global Logistics Delivery:

ull-Cycle Logistics Tracking & Support:

For stainless steel seamless pipes, fittings, etc., we use multi-layer protective packaging: inner layer with waterproof buffer to prevent scratches, outer layer with steel-bundled pallets or thickened cartons. Custom anti-rust wooden boxes/vacuum packaging is available for special needs, all meeting international transportation standards to ensure intact products.

Efficient Delivery with Global Logistics

Relying on Wenzhou's advantages and export experience, we cooperate with Maersk, DHL, etc., offering sea/air/land freight. Regular products are shipped in 7-15 working days, and delivery time for customized products is confirmed in advance, providing bulk port delivery and sample door-to-door service.

Full-Cycle Tracking to Protect Rights
Each order is equipped with logistics tracking, allowing customers to check the transportation status in real time; the dedicated customer service team will proactively follow up the logistics progress and promptly assist in solving issues such as customs clearance and transshipment, ensuring customers have peace of mind when placing orders and receiving goods.

After Sales Service

Certifications

After Sales Service

Our commitment to quality and international standards is validated by our certifications. Every shipment is accompanied by necessary documentation.

ISO 9001:2015 Quality Management System Certified.
Special Pressure Equipment Manufacturing License.
Mill Test Certificate (MTC) provided with every order, conforming to EN 10204 3.1/3.2.
Material Test Reports traceable to material origin.

Our relationship with clients extends beyond delivery. We provide:

Technical Support: Expert advice on material selection, application, and installation.
Efficient Complaint Resolution: Any quality concerns are addressed promptly and professionally.
Documentation Assistance: Full support with commercial invoices, packing lists, certificates, and other export documents.