90°承插弯头      90° bearing insert a bay head
承插异径弯头      Bearing inserts difference path bay
承插式正三通      Bearing inserts style san tong
承插式异径三通    Bearing inserts style difference path san tong
承插式斜三通      Bearing inserts style incline to san tong
承插式四通        Bearing inserts style Sitong
承插式异径管      Bearing inserts style difference path tube
承插式偏心异径管  Bearing inserts style prejudicial difference path tube