A:One end of the welded straight through pipe joint is connected with the internal thread body, the sealing surface is flat washer, the other end is connected with the welded pipe, the middle contact surface is 24° taper sealed with O-ring, and the joint is connected with thread.

B:the two ends of welded straight-through pipe joint are welded with welded pipe, the middle contact surface is sealed with O-ring, and the joint is connected with thread.

C:One end of welded right-angle pipe joint is welded with pipe, the other end is welded with 90° elbow, the middle contact surface is 24° conical surface, sealed with O-ring, and the joint is connected with thread.

D:the three ends of welded three-way pipe joint are welded with the pipe. the contact surface between the three ends is 24° conical surface, sealed with O-ring, and the three-end joint is connected with thread

E:the four ends of welded four-way pipe joint are welded with the pipe connector. the contact surface between the four ends is a flat sealing ring, and the four-end joint is connected with thread.

F:the two ends of the welded adjacent straight pipe joint are welded with the pipe, and the hole through the plate of the intermediate is fastened with a nut lock, and the sealing ring is used between the two ends to connect with threads.

G:the two ends of the welded adjacent bent pipe joint are welded with the pipe, and the hole through the plate of the intermediate is fastened with a nut lock, and the sealing ring is used between the two ends to connect with threads.

H:Insert welding type straight through pipe joint two ends inner diameter and pipe welding.

I:Insert welding type right Angle pipe joint two ends inner diameter and pipe welding.

J:Insert welded three - way pipe joint three - end inner diameter and pipe welding.