About Ningbo Intelligent Stainless Steel Co., Ltd - Stainless Steel Pipe Supplier in China

Ningbo Intelligent Stainless Steel Co., Ltd is based in China and currently lists five active product types. The catalogue includes stainless steel seamless pipe, stainless steel welded pipe, square stainless steel welded tube, duplex stainless steel pipe, and pipe fitting. These products fall under the broader HS‑code families for stainless steel pipe and tube (typically 7304 and 7305), although specific HS codes are not disclosed in the supplied data. The company’s focus is on stainless steel alloy grades commonly used in pressure, structural and decorative applications, such as 304, 316 and duplex 2205.

The seamless and welded pipe offerings cover standard diameter ranges from 6 mm to 219 mm and wall thicknesses that meet ASTM A312 and EN 10216‑5 specifications. The square welded tube is supplied in dimensions suitable for frame and support structures, while the duplex pipe targets high‑corrosion‑resistance projects. Pipe fittings are offered to complement the pipe families and are typically manufactured to API 5L or ISO 4299 dimensional tolerances.

Product Range and Specialties of Ningbo Intelligent Stainless Steel Co., Ltd

The supplier’s catalogue lists five distinct stainless steel products, each aligned with common industry grades. Seamless and welded pipes are usually produced in grades 304/304L and 316/316L, with duplex variants supplied in grade 2205 for enhanced strength and corrosion resistance. Typical specifications include a tensile strength of 520 - 620 MPa, elongation of 30‑40 %, and a surface finish of 2B or 4B. Square welded tubes are often supplied in mill‑finished condition with tolerances of ±0.5 mm on dimensions, and fittings conform to standard dimensions such as 1/2", 3/4" and 1" NPT or flanged connections. Buyers generally reference standards like ASTM A312, EN 10216‑5, API 5L and ISO 4299 when evaluating these products.

Trade and Export Information - Ningbo Intelligent Stainless Steel Co., Ltd

China is a leading exporter of stainless steel pipe and tube, with major shipment volumes to Southeast Asia, the Middle East, Europe and North America. Export logistics typically involve 20‑ft or 40‑ft containers, with products packed in wooden crates or steel pallets to prevent deformation. Buyers frequently request certificates such as ISO 9001 quality management, CE marking for EU markets, and mill test reports that verify chemical composition and mechanical properties. Commonly required inspections include SGS or Bureau Veritas pre‑shipment checks, especially for projects governed by ASTM or EN standards. Incoterms most often used are FOB Ningbo Port or CIF destination port, reflecting the supplier’s access to major Chinese maritime gateways.

Sourcing from Ningbo Intelligent Stainless Steel Co., Ltd - Buyer Guidance

When sourcing stainless steel pipe from this supplier, buyers should request a current mill test report that details the exact grade, chemical analysis (e.g., Cr > 18 %, Ni > 8 % for 304) and mechanical test results. It is advisable to verify compliance with the relevant standard (ASTM A312, EN 10216‑5, API 5L) and to confirm that the product meets the required dimensional tolerances for the intended application. Buyers may also ask for a certificate of origin and any applicable export licenses, and should confirm packaging details such as crate dimensions, pallet configuration and moisture protection before finalising the order.

What stainless steel grades are available for the seamless and welded pipes?

The catalogue indicates standard grades 304/304L, 316/316L and duplex 2205 are commonly supplied, matching ASTM A312 and EN 10216‑5 specifications.

Are mill test reports provided for each shipment?

Buyers should request a mill test report for each order; it is the industry norm for confirming chemical composition and mechanical properties of stainless steel pipe.

What are the typical dimensions and wall thickness ranges?

Standard diameters run from 6 mm to 219 mm with wall thicknesses from 1 mm up to 20 mm, conforming to the tolerance limits defined in the relevant ASTM or EN standards.

Which certifications should I verify before purchasing?

Typical certifications include ISO 9001 quality management, CE marking for EU shipments, and any project‑specific certifications such as API 5L compliance for oil‑and‑gas pipelines.

What is the usual minimum order quantity (MOQ) and lead time?

MOQ varies by product but generally starts at one 20‑ft container load; lead times are typically 30‑45 days from order confirmation, depending on grade and finish.

How are the pipes and fittings packaged for export?

Products are usually crated in wooden boxes or bundled on steel pallets, with protective film to prevent surface damage, and loaded into 20‑ft or 40‑ft containers.

Which Incoterms are commonly used for shipments from China?

FOB Ningbo Port and CIF destination port are the most frequently applied Incoterms for stainless steel pipe exports from this supplier.