API Spec 6A: 2004 Specification for Wellhead and Christmas Tree Equipment

415 стр.
EFFECTIVE DATE: FEBRUARY 1, 2005
ANSI/API 6A/ISO 10423-2003
This International Standard is based on API Spec 6A, seventeenth edition, February 1996, its errata and
supplement, and API Spec 6AV1, first edition, February 1996. The contents of API Spec 14D (upon which ISO 10433 was based) and API Recommended Practice 14H (upon which ISO 10419 was based) have been incorporated in API Spec 6A, seventeenth edition. The International System of units (SI) is used in this International Standard. However, nominal sizes are shown as fractions in the inch system. The fractions and their decimal equivalents are equal and interchangeable. Metric conversions and inch dimensions in this International Standard are based on the original fractional inch designs. Functional dimensions have been converted into the metric system to ensure interchangeability of products manufactured in metric or inch systems (see also Annex B). Tables referenced in the main body of this International Standard which are marked with an asterisk are repeated in Annex B in US Customary units with the same table number as in the main body but with the prefix B. In figures where dimensions are only given in inches, the values of surface roughness have been indicated in accordance with US draughting conventions. See also Annex M for listings of tables and figures. Users of this International Standard should be aware that further or differing requirements may be needed for individual applications. This International Standard is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This may be particularly applicable where there is innovative or developing technology. Where an alternative is offered, the vendor should identify any variations from this International Standard and provide details.