01. January 2015 · Comments Off · Categories: Standard

1. Scope

1.1 Thisspecification covers carbon steel castings for valves (such as ball valve, gate valves etc.),flanges,fittings,or otherpressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding.

1.2 Three grades,WCA,WCB,and WCC,are covered in this specification. Selection will depend uponde signand service conditions,mechanical properties,and the hightem-perature characteristics.

1.3 The values stated in either SI units or in-pound units are to be regarded separately as standard. The values stated in each stystem may not be exact equivalent; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non- conformance with the standard.

2. Referenced Documents
2.1 ASTM Standards:
A488/A488M Practice for steel castings, welding, qualification, of procedures and personnel
A703/A703M Specification for steel castings, general requirements, for pressure-containing parts
A985/A985M Specification for steel investment castings, general requirements, for pressure-containing parts

2.2 Manufacturers’ standardization society of the valve and fittings industry standard.
SP55 Steel casting for valves (such as ball valves, gate valves etc.), flanges, and fittings, and other components (visual method)

cast steel gate valves

3. General condidtion of delivery

Exept for investment castings, castings furnished to this specification shall confirm to the requirements of specification
A703/A703M, including any supplementary requirements that are are indicated in the purchase order. Failure to comply with the general requirement of specification A703/A703M consistitutes nonconformance with this specification. In case of conflict between the requirements of this specification and specification A703/A703M, this specification shall prevail.

3.2 Steel investment castings furnished to this specification shall confirm to the requirements of specification A985/A985M, including any supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of specifictions A985/A985M consititutes nonconformance with this specification. In case of conflict between the requirement of this specification and specification A895/A895M, specification A895/A895M shall prevail.