JIS G4904-2008《热交换器用镍铬铁合金无缝管》

This Japanese Industrial Standard specifies the seamless nickel-chromium-iron alloy
tubes (hereafter referred to as "tubes") intended to be used for such as heat exchangers
or condensers used in chemical and petroleum industries, steam generators used in
nuclear industry and the like, where the tube is designed for exchanging heat between
the outside and inside of its body. The steel tubes for fired heaters are specified in JIS
G 3467.
The purchaser may specify, in addition to the items given in the main text, the sup-
plementary quality requirements and U-bend tubes in Annex A and Annex B, respec-
tively, by prior agreement with the manufacturer.