API Certified Pipe Reducer Manufacturer

 API Certified Pipe Reducer Manufacturer

Hebei Longrun Pipeline Group Company is an API certified pipe reducer manufacturer focused on the production of concentric and eccentric reducers for oil and gas transmission, petrochemical processing, power generation, and industrial piping systems. Pipe reducers are essential fittings used to connect pipes of different diameters while maintaining controlled flow, pressure stability, and structural reliability within pipeline networks.

Product Scope and Standards

Our factory manufactures pipe reducers in accordance with API, ASME, ASTM, and relevant international standards. Common products include seamless and welded reducers made from carbon steel, low-alloy steel, and alloy steel. Size ranges typically cover small-diameter process piping to large-diameter transmission pipelines, with wall thicknesses matched to corresponding pipe schedules.

API certification ensures that our reducers meet requirements for material traceability, manufacturing control, testing procedures, and documentation. This compliance is particularly important for upstream, midstream, and downstream projects where safety and consistency are critical.

Manufacturing Process

Production begins with qualified raw materials sourced from approved steel mills. Chemical composition and mechanical properties are verified before forming. Depending on size are verified before forming. Depending on size and specification, reducers are produced using hot forming, cold forming, or welded fabrication methods.

For seamless reducers, steel billets or pipes are heated and formed through hydraulic pressing or extrusion to achieve smooth transitions and uniform wall thickness. Welded reducers are fabricated from steel plates or pipes, followed by longitudinal or circumferential welding and subsequent heat treatment. All reducers undergo dimensional inspection to ensure accurate end diameters, angles, and length tolerances.

Heat Treatment and Testing

Heat treatment processes such as normalizing, quenching, and tempering are applied based on material grade and service requirements. These treatments improve strength, toughness, and resistance to stress during operation.

Each production batch is subjected to mechanical testing, including tensile, hardness, and impact tests. Nondestructive examinations such as ultrasonic testing, radiographic testing, or magnetic particle inspection are carried out as required by API and project specifications. Hydrostatic or pressure-related tests can be arranged when specified by the customer.

Surface Treatment and Marking

Reducers can be supplied with various surface finishes, including shot blasting, pickling, or protective coatings suitable for storage and transportation. Standard beveling is provided for butt-weld connections. Clear and permanent markings include size, material grade, heat number, standard reference, and manufacturer identification, ensuring full traceability throughout the supply chain.

Applications and Supply Capability

API certified pipe reducers from Hebei Longrun Pipeline Group Company are widely used in crude oil and natural gas pipelines, refinery units, chemical plants, power stations, and water transmission systems. Our manufacturing and quality control systems support both standard orders and project-specific requirements, including customized dimensions and inspection levels.

By focusing on standardized production, controlled processes, and compliance with API requirements, Hebei Longrun Pipeline Group Company provides pipe reducers suitable for demanding industrial and energy-related applications worldwide.