API - SPEC 5LD REDLINE
Specification for CRA Clad or Lined Steel Pipe
|Publication Date:||1 March 2009|
This specification covers
cast, and welded clad steel line pipe and lined
steel line pipe with enhanced corrosion resistant properties
suitable for use in pipeline
transportation systems in the petroleum and natural gas
industries. The clad and lined steel line pipe specified
herein is composed of a carbon steel
backing or base
(in some cases inside and/or
outside) and a corrosion-resistant alloy (CRA) layer
or lining inside of the pipe.
The base material conforms to API 5L, PSL 2 and applicable
annex(es), except as modified herein.
usually has square ends, but
other special ends may be furnished by agreement between the
purchaser and manufacturer. Included are NPS 25 mm (1 in.) through
2134 mm (84 in.). Sizes greater than 2134
mm (84 in.) are outside of the range of API 5L but may be supplied
up to 2500 mm (100 in.) by agreement, including requirements for
Grades of base material covered by this specification include X42, X46, X52, X56, X60, X65, X70 and X80 and grades intermediate to these. Grades of the CRA layer are LC 1812, 2205, 2506, 2242, 2262, UNS S317030, UNS N08904, Alloy 59 (UNS N06059), Alloy 254 SMO™ 1 (UNS S31254), AL6NX (UNS N08367) and 1.4529 (UNS N08926). Other grades are subject to agreement between the purchaser and the manufacturer.
This specification is under the jurisdiction of the API Committee on Standardization of Tubular Goods.
The purpose of this specification is to provide standards for pipe with enhanced corrosion resistance suitable for use in conveying gas, water, and oil in both the oil and natural gas industries.
Although the plain-end line pipe meeting this specification is primarily intended for field make-up by circumferential welding, the manufacturer will not assume responsibility for field welding.
The size designations are nominal pipe sizes. In the text
where pipe size limits (or size ranges) are given, these are
outside-diameter sizes except where stated to be nominal. These
outside-diameter size limits and ranges apply also to the
corresponding nominal sizes.