Stainless Steel Ring Crimping Coupling for Water and Gas Piping Systems

Product Description

The LIANHE Stainless Steel Ring Crimping Coupling is engineered for secure, leak-free connections in demanding water and gas piping systems. Designed to meet rigorous industrial and commercial standards, this coupling ensures long-term stability, efficient flow management, and reduced maintenance needs across various engineering projects.

Core Technical Specifications

Our stainless steel couplings are manufactured with precision to ensure compatibility and reliability for your specific procurement requirements:

• Size Range: 1/2”~4" (DN15~DN100)
• Thickness: 0.8~2MM
• Standards: GB, EN, DIN, ASME
• Material: 0Cr18Ni9, SS304, S30408, SUS304, 1.4301, 0Cr17Ni12Mo2, SS316, S31603, SUS316, 1.4404, SS304L, S30403, 1.4306, SS316L, S31603, 1.4404
• Connection Mode of Socket End: Ring Crimping
• Nominal Pressure: PN16; Water pressure test: 2.5MPa; Air tightness test pressure: 1.05MPa
• Matching Gasket Applicable Temperature Range: -20℃~110℃
• Process: Pipes - Mechanically formed
• Surface Treatment: Vibration polishing, Magnetic polishing, Pickling
• Medium: Drinking water (Cold water, hot water), wastewater, industrial water, Oil, gas
• Product Marking: LOGO-OD-W.T-Material (Can mark the customer's LOGO and mark according to customer's requirement)
• Brand: LIANHE
• Place of Origin: Wenzhou, China
• HS Code: 7307230000

Applications & Product Advantages

This ring crimping coupling is widely utilized in all kinds of piping systems, including direct drinking water, environmental protection, steam, heating, air conditioning, and industrial water piping systems. Typical application environments include engineering projects, ships, commercial and residential buildings, hospitals, hotels, and environmental protection facilities.

13 Key Product Advantages:

1. High resistance strength for demanding structural needs;
2. Corrosion resistance ensuring durability in harsh environments;
3. Long service life, reducing replacement frequency;
4. Low flow resistance for optimal fluid transmission;
5. Good seismic performance to withstand vibrations;
6. BABSL compliance;
7. The environmental protection and sustainability;
8. Easy to install, significantly reducing labor time;
9. Suitable for embedded installation in complex layouts;
10. Low comprehensive cost for large-scale procurement;
11. Wear-resisting properties for continuous operation;
12. Health and hygienic safety for drinking water systems;
13. Good sealing performance with absolutely no leakage.

Quality Control & Testing Procedures

We maintain a rigorous quality control system to ensure every stainless steel coupling meets industrial standards and lowers procurement risks. Our dedicated QC personnel conduct thorough online and final inspections before delivery.

8-Step Product Quality Control:

1. Raw material outside diameter, thickness, and material inspection;
2. The length and end of raw materials shall be inspected after cutting;
3. After machine processing, the socket, outside diameter, and thickness are checked;
4. The weld size surface shall be inspected after welding forming;
5. After heat treatment, the surface, size, and socket shall be inspected;
6. After surface treatment, check whether the surface is qualified;
7. 100% Hydraulic air tightness test;
8. Marking and Packaging inspection.

Test Items Conducted: Hydrostatic test, Airtight test, Pressure test, Negative Pressure test, Drawing Test, Temperature change (cold and hot water cycle) test, Hydrostatic bending and Torsion test, Hydrostatic vibration test, Hydrostatic impact test.

Delivery Inspection: Material, Surface, Size, Hydrostatic test, Airtight test.

Factory Inspection Reports and Certificates:

• EN 10204/3.1B-MTC
• Raw material inspection certificate
• 100% Radiography Test Report
• Hydraulic seal test report
• Thread inspection report
• Third Party Inspection Report, etc.
• Certificates: GB/T19001-2016, ISO9001:2015, CE, Sanitary License

Production Equipment & Factory Strength

Our manufacturing facility is equipped with advanced machinery to guarantee precision and production capacity. The equipment includes 5 sets of automatic pipe welding production lines, 2 laser cutting machines, 5 vibration machines, 2 magnetic throwing machines, 5 airtight and hydraulic test equipment, 3 forming machines, 3 grooving machines, 2 drilling machines, 10 CNC lathes, 6 flat opening machines, 2 vertical water expansion machines, 2 frame water expansion machines, 10 pipe bending machines, 8 automatic argon arc welding machines, 4 hydraulic drawing machines, 4 hydraulic high-speed punching machines, 2 laser typewriters, and 2 packaging and other related equipment.

Our Services:

• Good knowledge of different markets can meet special requirements.
• Real manufacturer with our own factory located in Wenzhou, China.
• Strong professional technical team ensure to produce reliable and compliant products.
• Special cost control system ensure to provide the most favorable price.
• Abundance of press fittings production and sales management experience.

Packaging, Shipping & Trading Terms

To facilitate smooth procurement and project planning, we offer flexible trading terms and secure packaging solutions designed to protect products during international transit.

• Packing: Plastic bags + Cartons + Wooden Case.
• MOQ: 5~10 PCS. There are 5000 PCS in stock for each product and each size. Can support delivery at any time.
• Free Samples: Yes, samples are available free of charge. But the express delivery fee is not covered.
• Quotation Time: Within 3 hours.
• Price Validity: 3~7 days, according to the market.
• Delivery Time: Products of regular size 3~7 days. 25 days for production.
• Payment Term: 30% T/T Advance Payment + 70% T/T Payment Before Delivery. (Note: Specifics can be discussed.) Available via T/T, Western Union, Paypal, etc.
• Shipping Terms: EXW, FOB, CFR, CIF, DDP, DDU.
• Shipping Methods: We can provide shipping by sea, by air, and by express.
• After-Sales Service: Our quality warranty period is 1 year. Any quality problem will be solved to customer satisfactions.

FAQ

1. What manufacturing standards do your ring crimping caps comply with?

Our ring crimping caps and couplings are manufactured in strict accordance with international standards, including GB, EN, DIN, and ASME, ensuring reliable compatibility and secure connections for various piping systems.

2. Can you provide the necessary installation tools?

Yes, we can supply the appropriate installation tools. Please specify your requirements when placing your order, and we will include them to facilitate a smooth and efficient setup process.

3. What types of media are suitable for transportation using the ring crimping reducer?

The ring crimping reducer is highly versatile and is commonly used for securely transporting drinking water, wastewater, natural gas, oil, and other compatible fluids across different industrial and residential applications.

4. Do you offer product samples? Are they free or paid?

Yes, we provide free samples for your reference. This allows you to evaluate the quality, dimensions, and material specifications of our stainless steel fittings before making a formal purchasing decision.

5. Are discounts available, and how can they be applied?

Yes, we offer competitive pricing structures. Discounts are available and are calculated based on your total order quantity. Larger volume purchases will naturally benefit from more favorable pricing.

6. Do you offer technical support for product installation?

Absolutely. If you encounter any technical challenges during installation or daily use, our dedicated support team is readily available. Please feel free to contact us, and we will do our best to provide prompt and effective solutions.

7. How long is your quotation valid?

Generally, the validity period of our quotations is 3 to 7 days. However, the exact validity period will be clearly stated on your specific quotation document, taking into account the current raw material market conditions.

8. How do you ensure the bulk order matches the quality of the samples?

A successful initial order indicates satisfaction with our samples, while continuous long-term cooperation proves our consistency in product quality, reliable delivery times, and competitive pricing. We maintain strict quality control to ensure every batch matches the approved samples. Lianhe does not focus on one-off transactions; we treat all our clients as valued long-term partners.

Wenzhou Lianhe Valve Fitting Co.,Ltd is a professional one-stop manufacturer specializing in stainless steel valves and fittings. We are deeply committed to providing our customers with competitive pricing, superior quality products, and excellent after-sales service to support your piping system projects.