API(American Petroleum Institute),API 5L Line Pipe,API 5D

The American Petroleum Institute, commonly referred to as API, is the largest U.S trade association for the oil and natural gas industry.[......]

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AWWA C 200

AWWA C200 standard covers electrically butt-welded straight-seam or spiral-seam pipe and seamless pipe 6 in. (150 mm) in nominal diameter and larger for the transmission and distribution of water or for use in other water system facilities.[......]

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ASTM A134 standard specification

ASTM A134 standard covers electric-fusion (arc)-welded straight seam or spiral seam steel pipes with diameters NPS 16 and larger. The materials for these pipes as well as the welding procedure shall conform to other ASTM standards listed herein. This standard also contains requirements for the permissible weight and dimension variations and pipe lengths.[......]

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