Chock Body

The Chock Body is a cast steel component used in basic metal manufacturing, primarily serving as a structural support and alignment element for piping systems. It is designed to accommodate pipes with nominal diameters ranging from 50 to 600 mm (per GB/T 1047) and to withstand nominal pressures from 1.6 to 4.0 MPa (per GB/T 1048). The component is manufactured from cast steel grade ZG270-500 (per GB/T 11352), which provides a balance of strength and weldability. Mechanical properties include a tensile strength of 500–650 MPa, yield strength of 270–350 MPa, elongation of 18–22%, and impact toughness of 27–40 J at -20°C (per GB/T 228.1 and GB/T 229). Hardness ranges from 140 to 200 HBW (per GB/T 231.1). The operating temperature range is -29°C to 300°C, limited by the seal material. Surface roughness on sealing faces is 3.2–6.3 μm (per GB/T 1031), and dimensional tolerance is ±0.5 mm (per GB/T 1804). Weight varies from 10 to 500 kg depending on size and pressure class. These parameters are reference ranges; actual values must be confirmed for the specific model and application. The Chock Body is a component, not a standalone product, and its suitability depends on the piping system design, flange ratings, and service conditions. Verification of material grade, dimensions, and compliance with applicable standards should be performed with the legal manufacturer or supplier before procurement.

The Chock Body functions as a rigid support that transfers mechanical loads from piping to a foundation or structure, maintaining alignment and preventing excessive stress on flanges and joints. It accommodates thermal expansion and contraction within the operating temperature range, while its cast steel construction provides structural integrity under pressure. The component interfaces with flanges and pipe sections, and its sealing surface finish ensures proper gasket seating. Selection requires consideration of nominal diameter, pressure class, temperature, and material compatibility. Maintenance signals include visible deformation, cracking, or corrosion, which may indicate overloading or material degradation. Failure boundaries are defined by yield strength and impact toughness; exceeding these limits can lead to permanent deformation or fracture.