About Xi'an Overseas Oilfield Services Co., Ltd. - Steel Pipes Supplier in China

Based in China, Xi'an Overseas Oilfield Services Co., Ltd. lists 13 active products across four broad categories: Agriculture, Steel Pipes, Stainless Steel Pipes & Pipe Fittings, and Steel. The catalogue focuses on seamless carbon steel and stainless steel pipe products that fall under HS chapter 73, with codes such as 7304.19, 7304.39, 7304.51, 7304.11 and 7306.40. Products include ASTM A106 Grade B and Grade C seamless pipes, ASTM A53 Grade A and B pipes, and various ASTM A335/ASME SA335 alloy steel grades. Stainless steel offerings cover TP304 (UNS S30400) and TP316L (UNS S31603) grades. The list also mentions gas cylinder pipes and generic stainless steel pipe entries without specific HS codes.

All listed items are described by material standards rather than brand names, indicating that the supplier sources pipes conforming to international specifications such as ASTM and ASME. The carbon steel pipes are designated for high‑temperature and pressure service, while the alloy steel grades (P91, P92, P11, P12, P22) target elevated temperature power‑generation applications. Stainless steel TP304 and TP316L are typically used where corrosion resistance is required. The presence of multiple HS codes reflects the range of pipe dimensions and alloy compositions covered in the offering. Buyers can expect the products to be supplied in lengths compatible with standard pipe handling and shipping practices.

Product Range and Specialties of Xi'an Overseas Oilfield Services Co., Ltd.

The catalogue covers seamless carbon steel pipes conforming to ASTM A106 (Grades B and C) and ASTM A53 (Grades A and B), which are standard for oilfield, boiler and structural applications. Typical dimensions for these grades range from DN 20 mm to DN 600 mm with wall thicknesses defined by schedules 10 to 40, and pressure ratings up to 250 bar for A106 B. Alloy steel pipes listed under ASTM A335/ASME SA335 (P11, P12, P22, P91, P92) are chromium‑molybdenum alloys commonly supplied to API 5L specifications for high‑temperature, high‑pressure service in power plants. Stainless steel pipes TP304 and TP316L are supplied to ASTM A312, with common sizes DN 15 mm to DN 500 mm and pressure classes 150 - 300 psi, suitable for chemical processing and food‑grade environments. Industry practice also includes coating options such as epoxy or galvanizing for carbon steel, and passivation for stainless steel to enhance corrosion resistance.

Trade and Export Information - Xi'an Overseas Oilfield Services Co., Ltd.

China is among the world’s largest exporters of seamless steel and stainless steel pipes, with major importers located in the Middle East, Southeast Asia, Africa and the European Union. HS Chapter 73 codes (7304.* for carbon steel pipes and 7304.11/7306.40 for stainless steel) are subject to customs duties and, in some regions, anti‑dumping investigations, so buyers often verify the correct HS classification before shipment. Typical certifications requested by importers include ISO 9001 quality management, ISO 14001 environmental management, and for pressure‑rated pipes, API 5L or PED (EU Pressure Equipment Directive) compliance. Export shipments are usually packed in wooden crates or steel bundles, loaded into 20‑foot or 40‑foot containers, and shipped under FOB or CIF terms from Chinese ports such as Shanghai or Tianjin. Chinese export regulations require a customs declaration, commercial invoice and, for certain alloy grades, a material test report attached to the shipping documents.

Sourcing from Xi'an Overseas Oilfield Services Co., Ltd. - Buyer Guidance

When sourcing from Xi'an Overseas Oilfield Services, buyers should request Mill Test Certificates (MTC) and a full Material Test Report that confirm compliance with the cited ASTM or ASME standards for each pipe grade. Verification of dimensions, schedule, pressure rating and coating specifications should be cross‑checked against the supplier’s technical data sheet before finalizing the order. For stainless steel grades, a passivation certificate or corrosion test report can provide additional assurance of surface quality. Buyers are advised to confirm the HS code applicable to each product to avoid customs delays, and to request a pre‑shipment inspection report if required by the destination country.

What carbon steel grades are available in the seamless pipe catalogue?

The catalogue lists ASTM A106 Grade B and Grade C, as well as ASTM A53 Grade A and Grade B seamless pipes, all classified under HS code 7304.19 or 7304.39.

Are alloy steel pipe grades such as P91 and P92 included?

Yes, alloy steel grades ASTM A335/ASME SA335 P91, P92, P11, P12, and P22 are mentioned, with the P12 entry specifically tied to HS code 7304.51.

Which stainless steel grades does the supplier offer?

Stainless steel offerings include TP304 (UNS S30400) under HS code 7304.11 and TP316L (UNS S31603) under HS code 7306.40, both conforming to ASTM A312 specifications.

What certifications should a buyer request for these pipe products?

Buyers should ask for ISO 9001 quality certificates, Mill Test Certificates for each grade, and, where pressure service is required, API 5L or PED compliance documentation.

How are the pipes typically packaged for overseas shipment?

Pipes are usually bundled or crated in wooden pallets, protected with coating or passivation as applicable, and loaded into 20‑foot or 40‑foot containers for sea freight.

Which Incoterms are commonly used for exporting these pipes from China?

FOB (Free on Board) from major Chinese ports and CIF (Cost, Insurance, Freight) are the most frequently applied Incoterms for steel pipe exports.

What is the typical lead time for an order of seamless steel pipes?

Lead times generally range from 3 to 6 weeks, depending on pipe size, grade, and any required heat‑treatment or coating processes.

What documentation is needed to clear customs for these pipe shipments?

Customs clearance usually requires a commercial invoice, packing list, HS code declaration, and the Mill Test Certificate or Material Test Report that verifies the pipe grade and material composition.