Usage:
DSJ multifunction extension section and SSJ sleeve extension section are manufactured according to GB and have reliable quality. They are widely used in industry pipe of metallurgy, petroleum, chemical industry, electric power and city construction etc.They can avoid leakage and damage to establishment caused by the axes displacement of pipeline because of expanding when heat and contract when cold or other factors.

multifunction extension section  standard and specification:
Design and manufacture :GB12238-89API609
Connection flange: GB9115-88GB1238090
Inspection and test: GB/T13927-92API598

Technology performance parameter