JIS B2313-2009《钢板制对焊管配件》

his Standard specifies the pipe fittings having longitudinal seams to be fitted by
butt-welding, mainly to pressure service pipings , high temperature service pipings ,
alloy steel pipings , stainless steel pipingsand low temperature service pipings (here-
after referred to as "pipe fittings").

The special quality specification, a part of or all of which may be designated by the
agreement between the purchaser and the manufacturer, is given in .Annex JA and the
requirements of special pttinge are specified in Aneex JB: The shapes and
dimensions of special bevel ends are described in Annex JC for informative reference.

NOTE 1 The pipe fittings covered by this Standard include those manufactured
from welded steel pipes.
NOTE 2 The efficiency of pipe fittings shall be taken into consideration, depending
upon the designing conditions.
NOTE 3 The International Standards corresponding to this Standard and the
symbol of degree of correspondence ar