4Inch Sch40 Carbon Steel Butt Weld Cap Made In China

The cap includes the design of convex cap, conical shell, reducing section, flat cover and shrinking mouth.

Convex caps include: hemispherical caps, elliptical caps, disc caps and spherical caps. From the point of view of force, the hemispherical cap is gradually not good in the convex cap, but it is gradually easier to manufacture in terms of manufacturing difficulty. The form of the blind plate is similar, except that the blind plate is a detachable block, and the welded pipe cap cannot be removed.

Note the craft manufacturing process:

The correct way is: blanking (scribing) - small plates are assembled into large plates - forming - non-destructive testing

If it is wrong to test before molding, the quality of the product after molding cannot be guaranteed. That is to say, non-destructive testing refers to the final non-destructive testing.