API SPEC 20E-2017

$27.30

Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries

Published By	Publication Date	Number of Pages
API	2017	31

Guaranteed Safe Checkout

Category: API

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

1.1 Purpose

This standard specifies requirements for the qualification, production and documentation of alloy and carbon steel bolting used in the petroleum and natural gas industries.

1.2 Applicability

This standard applies when referenced by an applicable API equipment standard or otherwise specified as a requirement for compliance. An annex for supplemental requirements that may be invoked by the purchaser is included.

1.3 Bolting Specification Levels (BSL)

This standard establishes requirements for three bolting specification levels (BSL). These three BSL designations define different levels of technical, quality and qualification requirements, BSL-1, BSL-2, and BSL-3. The BSLs are numbered in increasing levels of severity in order to reflect increasing technical, quality and qualification criteria.

1.4 Bolting Types

This standard covers the following finished product forms, processes, and sizes:

a) machined studs;

b) machined bolts, screws and nuts;

c) cold formed bolts, screws, and nuts (BSL-1 only);

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.

Additional information