Y type strianer flanged end Pipe fitting 1, Heat & Acid resistance. 2, Easy operate. 3, Good price. AF Expansion joint VSSJA FlangeSleeve Telescopic Joint: After the installation of the loose expansion joint on the pipe ,tight andpress the elastic sealring of bolts on the inclination of the bolt cover in order to seal and connect .when the temperature changes , pipes can free expand ,when the ...