Stainless Steel Pipe Caps

Core Value

Superior Sealing Performance

Deeply reinforced inner plug structure, insertion depth up to 1.5 times the pipe diameter

Precision-ground sealing edges achieve a metal-to-metal hard seal

Optional silicone sealing ring for a dual elastic sealing system

Multiple Protection Functions

Prevents foreign objects from entering the pipeline, maintaining internal cleanliness

Avoids accidental contact causing personal injury

Blocks external corrosive media from eroding the pipe end cross-section

Product Series

By Process

Stamped Caps: Standard thickness, economical and practical

Spinned Caps: Ultra-thin and aesthetically pleasing, streamlined design

Cast Caps: Ultra-thick and heavy-duty, suitable for high-pressure applications

By Function

Test Caps: With pressure gauge interface, designed specifically for pressure testing

Decorative Caps: Brushed/mirror finish, aesthetically pleasing

Ventilating Caps: With microporous design to balance internal and external pressure

Technical Specifications

Material: 304/316L Stainless Steel

Pressure Rating: PN16/PN25/PN40 optional

Surface Treatment: Pickling and passivation/mechanical polishing Electropolishing

Connection Methods: Welded/Threaded/Quick Compression Fitting

Application Scenarios: Pipeline Construction: Temporary sealing and protection at pipeline ends

System Testing: Dedicated end caps for water/air pressure testing

Equipment Manufacturing: Protection for equipment connection ports

System Pre-installation: Long-term sealing for future expansion interfaces

Professional Installation: Welded: Full argon arc welding ensures no leakage. Threaded: Tightens with PTFE tape and applies thread sealant. Compression Fitting: Press-lock, suitable for temporary sealing needs.

Quality Control: 100% airtightness test (0.6MPa pressure holding for 3 minutes).

Ultrasonic wall thickness testing ensures uniform thickness.

Salt spray test ≥72 hours verifies corrosion resistance.

Selection Guide: Standard stamped caps for routine sealing. High-pressure conditions: Thickened or cast caps. Cleanliness requirements: Choose electropolished inner wall caps. Frequent disassembly: Quick compression fitting caps are recommended.

Stainless Steel Caps – Precision craftsmanship protects the safety and integrity of every pipeline end!