

Bellows: A pressure measuring elastic element in pressure measuring instruments. It is a cylindrical thin-walled wrinkled shell with multiple transverse ripples, and the corrugated pipe is elastic and can produce displacement under pressure, axial force, transverse force, or bending moment.

HDPE Double Wall Corrugated Pipe's Parameter Datas | |||||
Norminal Inner Diameter (DN/IN) | Min.Average Inner Diameter | Min. Wall Thickness of the Inside Layer | Min. Wall Thickness of the Inside Layer under a Hollow Section | Min. Wall Thickness of the Outside Layer under a Hollow Section | Min. Length of Engagement of Socket |
DN/IN | dem.min | e.min | e1.min | e3.min | A.min |
100 | 95 | 1.0 | 0.8 | 0.7 | 32 |
125 | 120 | 1.2 | 1.0 | 0.8 | 38 |
150 | 145 | 1.3 | 1.0 | 0.8 | 43 |
200 | 195 | 1.5 | 1.1 | 0.9 | 54 |
225 | 220 | 1.7 | 1.4 | 0.9 | 55 |
250 | 245 | 1.8 | 1.5 | 1.0 | 59 |
300 | 294 | 2.0 | 1.7 | 1.0 | 64 |
400 | 392 | 2.0 | 1.7 | 1.0 | 64 |
500 | 490 | 3.0 | 3.0 | 1.8 | 85 |
600 | 588 | 3.5 | 3.5 | 2.7 | 118 |
1000 | 985 | 5.0 | 5.0 | 3.0 | 140 |
1200 | 1185 | 5.0 | 5.0 | 3.0 | 162 |
2. Underground drainage and sewage in apartments and residential communities;
3. Pre embedded pipelines on highways and underground seepage networks of golf courses;
4. Water conservancy, irrigation, water transmission, drainage and other water conservancy projects;
5. Chemical and mining industries are used for fluid transportation and ventilation.;
6. Protective sleeves for underground pipelines and communication cables.

Texas Sentai Environmental Protection Technology Co., Ltd. covers an area of 50 acres, with nearly 100 employees and more than 50 professional and technical personnel. We are an environmental protection technology oriented enterprise mainly engaged in the production of a series of new geosynthetic materials, specializing in the design and research and development of geosynthetic materials application, specialized production and manufacturing, construction design services, and system solution services for infrastructure construction projects such as transportation, water conservancy, environmental protection, ecological restoration, environmental governance, municipal construction, and animal husbandry. Our main products include various types of geosynthetic fabrics, geosynthetic membranes, and composite geosynthetic membranes






Q1: Can I request slight modifications to the product design based on our project?
Yes, we can do this. Our factory's production is very flexible.
Q2: Why did you choose us?
Answer: We have many years of manufacturing experience and excellent customization capabilities. We have all the styles you want.
Q3: Can you print text on the product according to the customer's requirements?
Yes, we can make labels according to your specific requirements.
Q4: Are you a manufacturer or a trading company?
We are a trading and manufacturing consortium in China.
Q5: Can the product be customized?
Of course, we can customize the size and style you want.
Q6: What is your packaging method?
Answer: There are two packaging methods:
PP bag+plywood wooden box
Q7: Can you provide samples?
Yes, the samples are free. Please contact us for more details.
What are your payment terms?
a: Usually, we make payment through TT and pay a 30% deposit first, with the remaining balance paid against a copy of the bill of lading. A large quantity can be negotiated.