About Shanghai Changhao High Pressure Pipefittings Co., Ltd. - Flanges Supplier in China

China, Shanghai is the base of Shanghai Changhao High Pressure Pipefittings Co., Ltd., a supplier that currently lists five active products. The catalogue includes an insulating joint, a monolithic insulating joint, a flange, an elbow and a tee. The flange, elbow and tee are classified under HS chapter 73, covering iron and steel products. Materials specified are carbon steel A105, stainless steel grades 304, 304L, 316, 316L and various alloy steels. The company’s top categories are flanges, agriculture and wires & cables, indicating a focus on high‑pressure pipe components.

The flange entry carries HS code 7307.19, the elbow HS code 7307.23 and the tee HS code 7307.99. These codes fall within the international tariff line for steel pipe fittings and flanged fittings. Typical specifications for such items include pressure classes ranging from Class 150 to Class 2500 according to ASME B16.5. Carbon steel A105 is commonly supplied in annealed condition and conforms to ASTM A105, while stainless grades follow ASTM A182. The catalogue does not list additional HS codes for the insulating joint products, which are generally classified under separate electrical insulation headings.

Product Range and Specialties of Shanghai Changhao High Pressure Pipefittings Co., Ltd.

The supplier’s catalogue lists insulating joint and monolithic insulating joint as non‑metallic components, and three metallic fittings: flange (HS 7307.19), elbow (HS 7307.23) and tee (HS 7307.99). Materials are given as carbon steel A105, stainless steel 304/304L and 316/316L, and alloy steel variants, which are standard choices for high‑pressure services.

In the pipe‑fitting market, flanges are typically offered in pressure classes from 150 to 2500, conforming to ASME B16.5 dimensions and often marked with the PN or NPS size. Elbows and tees follow the same pressure‑class system and are usually supplied with a 45° or 90° bend radius, with dimensional tolerances defined by API 6A or EN 1092‑1. Stainless grades 304/304L provide corrosion resistance in water and chemical environments, while grade 316/316L adds molybdenum for higher chloride resistance. Carbon steel A105 is the standard carbon‑steel flange material for general oil‑field and petrochemical applications.

Trade and Export Information - Shanghai Changhao High Pressure Pipefittings Co., Ltd.

China is a global exporter of steel pipe fittings, with major shipment volumes to Southeast Asia, the Middle East, Europe and North America. Buyers in oil & gas, petrochemical, power generation and water‑treatment sectors typically import these items under HS 7307, and they often require compliance with standards such as ISO 9001 quality management, ISO 14001 environmental management, CE marking for the European market and PED certification for pressure equipment in the EU. Typical packaging includes wooden crates or steel drums for bulk shipments, with container loading in 20‑ft or 40‑ft units; Incoterms such as FOB Shanghai or CIF destination are commonly used. Chinese exporters frequently provide mill test reports, material certificates and third‑party inspection certificates (e.g., SGS, Bureau Veritas) to satisfy import‑country regulatory requirements.

Sourcing from Shanghai Changhao High Pressure Pipefittings Co., Ltd. - Buyer Guidance

When sourcing flanges, elbows or tees from this supplier, request the mill test report (MTR) and a material test certificate (MTC) that reference ASTM A105, ASTM A182 or the equivalent stainless‑steel standards. Verify that the dimensions and pressure class match the ASME B16.5 or EN 1092‑1 specifications required for your project, and confirm whether the product is supplied with a NACE MR0175 corrosion‑resistance endorsement if used in sour‑gas environments. For the insulating joint products, ask for the dielectric strength test report and the relevant IEC or IEC‑60384 certification, and ensure packaging protects the joints from mechanical damage during transit.

What pipe‑fitting products does Shanghai Changhao list in its catalogue?

The catalogue contains five items: insulating joint, monolithic insulating joint, flange (HS 7307.19), elbow (HS 7307.23) and tee (HS 7307.99). Each metallic fitting is offered in carbon steel, stainless steel 304/304L, 316/316L or alloy‑steel variants.

Which HS codes apply to the metallic fittings?

The flange is coded 7307.19, the elbow 7307.23 and the tee 7307.99. These codes belong to the HS chapter for iron and steel products, specifically pipe fittings and flanged fittings.

What material standards should buyers verify for the flange product?

Buyers should check that the carbon‑steel flange conforms to ASTM A105 and that stainless‑steel versions meet ASTM A182 specifications. Documentation such as a mill test report should reference these standards.

Are there typical pressure classes for the elbow and tee?

Elbows and tees are usually supplied in pressure classes ranging from Class 150 to Class 2500, in accordance with ASME B16.5 or EN 1092‑1. The class should be confirmed on the order to match system design requirements.

What certifications are commonly required for steel pipe fittings from China?

Importers often request ISO 9001 quality‑management certification, ISO 14001 environmental certification, CE marking for EU markets and PED compliance for pressure equipment. Third‑party inspection reports from agencies such as SGS or Bureau Veritas are also standard.

What documentation is advisable before placing an order for the insulating joint?

Request a dielectric strength test report and any IEC or IEC‑60384 certification that applies to the insulating material. Verify that the joint’s dimensions and voltage rating meet the intended application.

What are typical packaging and shipping methods for these fittings?

Bulk steel fittings are normally packed in wooden crates or steel drums and loaded into 20‑ft or 40‑ft containers. Shipping terms frequently used are FOB Shanghai or CIF to the buyer’s destination port.