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Stainless Steel Fitting
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The Lianhe Stainless Steel Ring Crimping Cap is designed to close and seal the end of a stainless steel piping system. It uses a ring crimping socket connection to create a secure joint without conventional threading or on-site welding.
Manufactured from mechanically formed stainless steel pipe, the cap provides corrosion resistance, structural strength and reliable sealing performance. It is suitable for drinking water, industrial water, gas, heating, air-conditioning and other compatible piping systems.
Standard sizes are available from 1/2" to 4" (DN15 to DN100), with SS304, SS304L, SS316 and SS316L material options. Customer-specific marking, packaging and OEM logo services are also available.
Ring crimping socket connection
Size range from 1/2" to 4" (DN15 to DN100)
Available in SS304, SS304L, SS316 and SS316L
Nominal pressure up to PN16
Suitable for concealed and exposed pipe installations
Corrosion-resistant stainless steel construction
Reliable sealing with the appropriate matching gasket
Multiple surface-treatment options
OEM logo and customized product marking available
Hydraulic and airtightness testing before delivery
Item | Specification |
|---|---|
Product | Stainless Steel Ring Crimping Cap |
Size Range | 1/2"–4" (DN15–DN100) |
Wall Thickness | 0.8–2.0 mm |
Connection | Ring crimping socket end |
Nominal Pressure | PN16 |
Hydrostatic Test Pressure | 2.5 MPa |
Airtightness Test Pressure | 1.05 MPa |
Applicable Standards | GB, EN, DIN and ASME |
Manufacturing Process | Mechanically formed from stainless steel pipe |
Surface Treatment | Vibration polishing, magnetic polishing or pickling |
Gasket Temperature Range | −20°C to 110°C |
Product Marking | Logo, outside diameter, wall thickness and material |
OEM Marking | Customer logo and customized marking available |
Brand | LIANHE |
HS Code | 7307230000 |
Place of Origin | Wenzhou, China |
The stated temperature range applies to the matching gasket. Actual operating conditions should be confirmed according to the gasket material, conveyed medium, system pressure and installation requirements.
The ring crimping caps are available in the following stainless steel grades:
Material Grade | Equivalent Designations |
SS304 | 0Cr18Ni9 / S30408 / SUS304 / 1.4301 |
SS304L | S30403 / 1.4306 |
SS316 | 0Cr17Ni12Mo2 / SUS316 |
SS316L | S31603 / 1.4404 |
SS304 is commonly selected for general water and building-service applications. SS316 and SS316L provide additional corrosion resistance and may be considered for more demanding environments. Final material selection should be based on the conveyed medium, operating temperature, pressure and local project requirements.
The cap is designed to terminate a pipeline and, when installed with the correct gasket and crimping tool, provide a secure and leak-resistant connection.
The ring crimping connection reduces the need for conventional threading or on-site welding. This can simplify installation and help shorten construction time.
Stainless steel provides resistance to corrosion in many water, gas and industrial piping applications. The appropriate stainless steel grade should be selected for the operating environment.
The stainless steel construction offers wear resistance and durability, helping reduce the need for frequent replacement when the product is correctly selected and installed.
The compact connection design is suitable for both exposed pipework and embedded or concealed piping installations, subject to applicable construction and inspection requirements.
A correctly installed ring crimping connection requires limited routine maintenance and can contribute to the long-term reliability of the piping system.
The mechanical connection can accommodate the requirements of suitable piping installations where vibration or movement resistance is important. The complete system must be designed in accordance with the relevant engineering standard.
Lianhe stainless steel ring crimping caps can be used to terminate compatible pipelines in residential, commercial and industrial projects.
Typical application areas include:
Residential buildings
Commercial buildings
Hospitals
Hotels
Engineering projects
Marine and ship piping
Heating systems
Air-conditioning systems
Environmental protection projects
Industrial fluid systems
Water-supply installations
Depending on the selected stainless steel grade, gasket material and operating conditions, the cap may be used with:
Cold drinking water
Hot drinking water
Wastewater
Industrial water
Oil
Gas
Other compatible fluids
Material and gasket compatibility must be confirmed before use with chemicals, oil, gas, steam or other demanding media.
The product may be incorporated into compatible:
Water piping systems
Gas piping systems
Direct drinking-water systems
Environmental protection piping systems
Heating systems
Air-conditioning systems
Industrial water systems
Other stainless steel ring crimping piping systems
For steam applications, confirm the gasket, pressure and temperature rating with Lianhe before ordering.
Lianhe applies inspection procedures throughout material preparation, forming, finishing, testing and packaging.
The material grade, outside diameter and wall thickness of the stainless steel pipe are inspected before production.
After cutting, the material length and pipe-end condition are checked.
After mechanical processing, the socket dimensions, outside diameter and wall thickness are inspected.
Where applicable, the formed area, weld dimensions and surface condition are examined.
After heat treatment, the surface, dimensions and socket geometry are checked.
The finished surface is inspected after vibration polishing, magnetic polishing or pickling.
Products are subjected to the applicable hydraulic and airtightness inspections.
Product markings, quantities and packaging are checked before shipment.
Testing may include:
Hydrostatic testing
Airtightness testing
Pressure testing
Negative-pressure testing
Drawing tests
Hot- and cold-water cycle testing
Hydrostatic bending and torsion testing
Hydrostatic vibration testing
Hydrostatic impact testing
Delivery inspection covers the material, surface finish, dimensions, hydrostatic performance and airtightness, as applicable to the order and product specification.
Subject to the order requirements and product applicability, the following documents may be available:
EN 10204 3.1 material test certificate
Raw-material inspection certificate
Radiographic test report
Hydraulic sealing test report
Inspection report
Third-party inspection report
The company’s listed certifications include:
GB/T 19001-2016
ISO 9001:2015
CE
Sanitary License
Please contact Lianhe to confirm which certificate or inspection document applies to the selected product, material and order.
Production and inspection equipment used for stainless steel press and ring crimping products includes:
5 automatic pipe-welding production lines
2 laser-cutting machines
5 vibration-polishing machines
2 magnetic-polishing machines
5 airtightness and hydraulic-testing units
3 forming machines
3 grooving machines
2 drilling machines
10 CNC lathes
6 end-facing machines
2 vertical water-expansion machines
2 frame-type water-expansion machines
10 pipe-bending machines
8 automatic argon-arc welding machines
4 hydraulic drawing machines
4 high-speed hydraulic punching machines
2 laser-marking machines
Packaging and related production equipment
Standard product marking can include:
LIANHE logo
Outside diameter
Wall thickness
Material grade
Customer logos and customized markings can be provided according to the confirmed order requirements. Customized cartons, labels and packaging arrangements are also available.
Standard export packaging consists of:
Plastic bags
Cartons
Wooden cases
Packaging can be adjusted according to the order quantity, transport method and customer requirements.
Item | Details |
MOQ | Generally 5–10 pieces |
Stock | Stock availability depends on the product and size |
Quotation Time | Normally within 3 hours |
Price Validity | Generally 3–7 days, depending on material-market conditions |
Delivery for Regular Sizes | Approximately 3–7 days when available from stock |
Production Lead Time | Approximately 25 days |
Samples | Free samples may be available; courier charges are not included |
Actual stock, MOQ and lead time must be confirmed according to the requested size, material, quantity and current production schedule.
The standard payment arrangement is:
30% T/T deposit
70% T/T balance before delivery
Specific terms can be discussed according to the order. Available payment methods may include T/T, Western Union and PayPal.
Available trade terms include:
EXW
FOB
CFR
CIF
DDP
DDU
Orders can be shipped by sea, air or international express service.
The standard quality warranty period is one year. If a confirmed product-quality issue occurs within the applicable warranty conditions, Lianhe will work with the customer to provide an appropriate solution.
For an accurate quotation for stainless steel ring crimping caps, please provide:
Required size
Stainless steel grade
Wall thickness
Applicable standard
Required quantity
Gasket or operating-temperature requirement
Conveyed medium
Working pressure
Product-marking or OEM requirements
Packaging requirements
Destination country or delivery terms
Contact Lianhe for current stock availability, technical confirmation, samples and pricing.
