I.Overview

Applicable to welded pipe joints for pipeline systems with oil as the medium. The nominal pressure of process lubrication is 31.5MPa, and the working temperature is -25 ～ + 80 ℃. Welded end straight pipe joint, welded end straight pipe joint, welded straight pipe joint, welded right angle pipe joint, welded four way pipe joint, welded bulkhead straight pipe joint, welded bulkhead right pipe joint, welded The types and sizes of the branch pipe joints and welded articulated pipe joints are in accordance with the regulations in Figures 1 to 10 and Table 1.

II.Structure form

III.Dimensions

IV.The mark description

a. Welded end straight pipe joint with pipe outer diameter D0 of 18mm, thread diameter d of 22mm, and pitch of 1.5mm:

Pipe connector 18-M22 × 1.5 JB / 966-77

b. Welded end straight pipe joint with pipe outer diameter D0 of 18mm, thread diameter d of 22mm and pitch of 1.5mm

Pipe connector 18-M22 × 1.5 JB / 1883-77

c. Welded end straight pipe joint with outer diameter D0 of 28mm:

Pipe joint 28 JB970-77

d. Welded right-angle pipe joint with outer diameter D0 of 28mm:

Pipe joint 28 JB971-77

e. Welded tee joint with outer diameter D0 of 18mm:

Pipe joint 18 JB972-77

f. Welded four-way pipe joint with outer diameter D0 of 18mm:

Pipe joint 18 JB973-77

g. Welded bulkhead straight pipe joint with outer diameter D0 of 28mm:

Pipe joint 28 JB974-77

h. Welded bulkhead straight angle pipe joint with outer diameter D0 of 28mm:

Pipe joint 28 JB975-77

i. Welded pipe joint with outer diameter D0 of 28mm:

Pipe joint 28 JB977-77

j. A-type welded hinge joint with outer diameter D0 of 28mm:

Pipe joint 28A JB978-77