Tianjin Huilide New Materials is a trading company of Tianjin Minde Heating Equipment Co., Ltd. The company is located in the beautiful coastal city of Tianjin, covering an area of 10,000 square meters. Among the Chinese floor heating pipe manufacturers, the number of equipment ranks among the top three, and all of them are advanced production equipment, some of which are self-developed technologies.

High Quality
All raw materials produced by Tianjin Minde are imported raw materials, such as: LGSL188, Lotte8100GX, Basell 3060, Sonarnol's A4412B, which guarantee the product stability and safety of the pipe to the greatest extent.
Advanced Equipment
We have 92 advanced PEXa pipe production lines, 5 PEXa oxygen barrier production lines, 2 PERT pipe production lines, 2 PEX-Al-PERT pipe production lines, and 10 injection molding pipe fittings equipment, with an annual production capacity of 100 million meters of pipes.
ODM/OEM Service
Our team of experts will work closely with you to understand your needs and will provide solutions that are tailored to meet your expectations.
Production Market
All pipes of our company have been exported to Russia, Australia, Brazil, the United States and other parts of the world, and have obtained access certificates such as Russian GOST , Australian watermark and US NSF certification etc .
The fittings produced by our company mainly include the following types:
Q&E Ring
PEX expansion rings are designed to be used in conjunction with a PEX expansion (expander) tool when installing PEX-A type tubing and expansion style brass or poly PEX fittings.
Specification |
|
Material |
PEXA |
Production standard |
ISO15875.3 / ASTM F1960 |
Size |
16-32 |
Color |
Natural color or Customized |
Working Temperature |
95 deg |
Lifespan |
More than 50 years |
EN
Diameter |
Outer diamater |
Inner diamater |
Height |
16mm |
22mm |
16mm |
17mm |
20mm |
26mm |
20mm |
21mm |
25mm |
32mm |
25mm |
26mm |
32mm |
40mm |
32mm |
33mm |
US
Diameter |
Inner diamater |
Outer diamater |
Height |
3/8‘’ |
12.34 ± 0.10 mm |
3.12 ± 0.15 mm |
13.72 ± 0.51 mm |
1/2” |
16.08 ± 0.08 mm |
3.12 ± 0.13 mm |
16.00 ± 0.51 mm |
3/4” |
22.40 ± 0.10 mm |
3.12 ± 0.13 mm |
22.00 ± 0.51 mm |
1” |
28.80 ± 0.10 mm |
3.63 ± 0.15 mm |
27.99 ± 0.76 mm |
2” |
54.71 ± 0.1 mm |
5.99 ± 0.30 mm |
49.99 ± 1.01 mm |
Fast installation
Expansion rings can be quickly installed by simply expanding the pipe slightly and then inserting it into the fitting, eliminating the need for complex threading or gluing processes.
Reliable seal
When properly installed, Q&E rings create a tight, watertight seal, ensuring no leaks in the connection.
Flexibility
They can be used with various pipe materials, including PEX, copper, and CPVC, depending on the design of the ring.
Thermal expansion accommodation
Q&E rings can absorb slight movements caused by temperature fluctuations in the piping system, preventing potential damage from expansion and contraction.
Minimal tooling
Often, only a dedicated expansion tool is needed for installation, which is relatively simple to operate.

Application of Q&E Ring
Residential Plumbing
From kitchen sinks to bathroom fixtures, Q&E rings secure connections, ensuring no leaks disrupt daily activities.
Commercial Plumbing
In large plumbing systems, Q&E rings play a crucial role in maintaining high-pressure environments without risk of failure.
Heating Systems
Often used in boilers and radiators, Q&E rings help maintain water flow without leaks, ensuring efficient heating.
Industrial Applications
Q&E rings are employed in various industries for their durability and reliability in demanding conditions.

Q&E Ring Installation Instructions
Step 01
Cut the appropriate length of PEX A tube
Step 02
Put the ring on the PEX A tube
Step 03
Use expansion tool to expand ring and tube
Step 04
Insert the PEX expansion fitting and wait for the expansion ring to retract
Packing & Delivery


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FAQ
We're well-known as one of the leading fittings manufacturers and suppliers in China. Please rest assured to buy customized fittings at competitive price from our factory. For quotation, contact us now.
Uponor ring, Fittings, PEXA SLEEVE