Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition, Includes Errata 1 (2020) and Addendum 1 (2021)
石油和天然气工业用耐腐蚀螺栓 第二版 包括勘误表1(2020)和附录1(2021)
This standard specifies requirements for the qualification,
production, and documentation of corrosion-resistant
bolting used in the petroleum and natural gas industries.This standard applies when referenced by an applicable
API equipment standard or otherwise specified as a
requirement for compliance.This standard establishes requirements for two bolting
specification levels (BSL). These two BSL designations
define different levels of technical, quality, and
qualification requirements: BSL-2 and BSL-3. The BSLs
are numbered in increasing levels of requirements in
order to reflect increasing technical, quality, and
qualification criteria. BSL-2 and BSL-3 are intended to be
comparable to BSL-2 and BSL-3 as found in API 20E.
BSL-1 is omitted from this standard.This standard covers the following product forms,
processes, and sizes:a) machined studs;b) machined bolts, screws, and nuts;c) cold-formed bolts, screws, and nuts with cut or
cold-formed threads;d) hot-formed bolts and screws <1.5 in. (38.1 mm)
nominal diameter;e) hot-formed bolts and screws ≥1.5 in. (38.1 mm)
nominal diameter;f) roll threaded studs, bolts, and screws <1.5 in.
(38.1 mm) diameter;g) roll threaded studs, bolts, and screws ≥1.5 in.
(38.1 mm) diameter;h) hot-formed nuts <1.5 in. (38.1 mm) nominal
diameter;i) hot-formed nuts ≥1.5 in. (38.1 mm) nominal
diameter.