Preface
CSA Preliminary Standard Z245.3, Low Strength Steel Line Pipe Less Than 18 Inches in Diameter, is one of a series of CSA Standards covering steel line pipe. This Standard applies to plain-end welded and seamless steel line pipe of less than 18 inches in diameter, and with a specified minimum yield strength of less than 52,000 psi, intended to be used for the transportation of gases and liquids. It covers three categories and five strength grades of pipe.
CSA Standard Z245.3 has been prepared by the Committee on Pipe Line Materials, organized in 1968, at the request of the CSA Committee on Gas Pipeline Code, and is intended for use in gas and oil transmission lines in accordance with the requirements of CSA Standards Z183, Oil Pipe Line Transportation Systems, and Z184, Gas Transmission and Distribution Piping Systems.
Because of work now underway in the area of weldability requirements it is anticipated that this publication will require substantial modification within the next few months. Accordingly, it was recommended that Z245.3 be published as a Preliminary Standard to remain in effect for a maximum period of one year so that a reference document would be available for use by the CSA Committees on Oil and Gas Pipe Line Codes.
In the preparation of this Standard extensive use was made of material published by the American Petroleum Institute. The Committee gratefully acknowledges ~se of this material.
This Standard was prepared and approved by the CSA Committee on Pipe Line Materials under the jurisdiction of the Sectional Committee on Gas and Oil Pipeline Codes.
Scope
1.1 Scope
This Standard covers plain-end welded and seamless steel line pipe of less than 18 inches (457 rom) outside diameter with a specified minimum yield strength of less than 52,000 psi (359 MPa) intended to be used for the transportation of gaseous and/or liquid hydrocarbons.
1.2 Classification
Pipe manufactured to this Standard and intended to be used as specified in CSA Standard Z183, Oil Pipe Line Transportation Systems or Z184, Gas Transmission and Distribution Piping Systems, is classified as follows:
(a) Category I Intended for pipe lines not requiring proven notch toughness properties;
(b) Category II Intended for buried pipe lines requiring proven notch toughness properties; and
(c) Category III - Intended for exposed pipe lines requiring proven notch toughness properties.
1.3 Grades
This Standard covers the following five strength grades of pipe:
(a) Grade 25;
(b) Grade 30;
(c) Grade 35;
(d) Grade 42; and
(e) Grade 46.
NOTE: Because of different manufacturing methods for different sizes of pipe, it may not be possible to obtain all of the pipe dimensions and thicknesses shown in Table 5 in all categories of pipe and all strength grades, particularly in the smaller sized of the diameter range with heavier wall thicknesses. The individual pipe manufacturer should be consult early in the design stages to ascertain the availability of a particular pipe size, class and grade.
