321 304L 316L Stainless Steel Pipe Fittings Corrosion Resistant SS Pipe Cap

Stainless steel pipe caps are used to weld on the pipe end or install on the external thread of the pipe end to cover the pipe. Also known as plugs or caps. Uses of stainless steel pipe caps: pipe fittings welded on the pipe end or installed on the external thread of the pipe end to cover the pipe. Used to close the pipeline, the function is the same as the plug.

Pipe caps include convex pipe caps, cone shells, reducers, flat covers and tightening mouth designs.

Convex pipe caps include: hemispherical pipe caps, elliptical pipe caps, disc-shaped pipe caps and spherical caps. From the perspective of force, the convex pipe caps are gradually worse from hemispherical pipe caps, but from the perspective of manufacturing difficulty, they are gradually easier to manufacture.

Standard: ASME DIN JIS BS GB/T JB SH HG

Wall thickness: SCH5-SCH160

Size: DN15-DN1200

Pressure: 10S 20S STD Sch80s

Material: 304 316 304L316L321, etc.

Process: Please consult customer service for details

Standard: Pressing

water, beverages, beer, food, petrochemicals, nuclear power, machinery, medical equipment, fertilizers, shipbuilding, waterproofing, pipelines, etc.

Packaging: wooden boxes, cartons Service: provide technical consultation, guide installation, etc.

Avoid splicing at the r of the disc-shaped pipe cap, which will reduce thinning and high stress.

During splicing, the weld direction is only allowed to be radial and circumferential. This requirement may be cancelled for large Stainless Steel Pipe caps in the future. The splicing distance should be required to be greater than 3δ and not less than 100mm (the heat affected zone of welding is a high stress zone, and the chemical composition in this zone will be burned. Therefore, the high stress zone should be avoided, which is related to the thickness. According to practical experience, the stress attenuation length is greater than 3δ and not less than 100mm). However, it is difficult for refrigeration equipment to meet this requirement, which has its own particularity.

For the head formed after splicing, the splicing weld should be 100% X-ray or ultrasonically inspected, and the qualified level follows the equipment shell. The inspection level and proportion of the weld formed at the last forming are the same as those of the equipment shell, which is wasteful.

For example: If the equipment shell is 20% inspected, III is qualified. Then the blind head splicing weld and the last weld are also III qualified, and the welding joint coefficient is 0.85;

If the equipment shell is 100% inspected, II is qualified. Then the blind-head joint weld and the final weld are also II qualified, and the welding joint coefficient is 1

So although the blind-head joint is 100% tested, the qualified level is different and depends on the equipment shell.

But pay attention to the process of manufacturing:

The correct approach is: cutting (marking)-small plates are assembled into large plates-forming-nondestructive testing

If the test is done before forming, it is wrong, and it cannot guarantee that it will be qualified after forming. In other words, nondestructive testing refers to the final nondestructive testing.

To purchase stainless steel pipe caps, please consult our professional supplier. Our company specializes in the production of various stainless steel pipe caps, has advanced production equipment, and has experienced engineers to provide you with professional services. Welcome to call us for consultation