A733 Standard Specification for Welded and
Standard Specification for Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples A0733-16 ASTM|A0733-16 ... by the applicable Specifications A53/A53M and A106/A106M or for low temperature service as described by Specification A333/A333M (see 4.1.1).