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Type a flexible waterproof casing is often used in the place where the pipeline crosses railway, road and street. In order to prevent the pipeline from being crushed by load, protective casing is set outside the pipe, such as large diameter concrete pipe and large diameter steel pipe, so as to avoid the external force (load) directly acting on the outer wall of the pipeline, causing pipeline damage. Type a flexible waterproof casing is generally applicable to structures with vibration or strict waterproof requirements where the pipeline passes through the wall. After the casing part is processed, the outer wall shall be painted with primer (including camphor Dan or cold primer oil).

Product Name: Type a flexible waterproof casing
Product alias: Flexible waterproof casing
Product specification:【 DN50mm-DN3200mm】
Product color: Sky blue, red physical color see the commodity display picture
Scope of application:【 Steel pipe, PP pipe]
Product certification : International ISO9001-2001
Product grade: Grade A
Working temperature:- 20 degrees to 80 degrees (can also process whole 304, 316, 316L stainless steel)

  • Quality stability: the implementation of the whole process of quality monitoring, meticulous, all-round detection!
  • Reasonable price: efficient internal cost control, reduce expenses, and benefit customers!
  • Fast delivery: advanced production line, sufficient stock, shorten the delivery time!
  •  A flexible waterproof sleeve

Online consultation

Purchase hotline: 021-6221-2627

Product advantages

Type A is suitable for the pipe with tight pipe fittings and flexible pipe fittings. The external welding water stop wing ring of the flexible waterproof casing is provided with sealing gasket and inner flange wire connection. It is designed and customized according to the actual situation of pipeline installation. It is used for waterproof on both sides of the wall. It is recommended that you use flexible waterproof sleeve. For example, submersible water pump water supply and drainage system, both ends of the pipe wall should be given waterproof treatment to prevent structural water seepage!

Product features

When the upstream surface is corrosive medium, sealing material can be used to seal the gap
2. If there is non concrete wall at the casing wall, the concrete wall should be used locally, and the casting circumference should be 200 larger than the wing ring diameter (D5), and the casing must be poured into the wall at one time.
3. The thickness of concrete wall at the pipe crossing position shall not be less than 300, otherwise one or both sides of the wall shall be thickened, and the diameter of the thickened part shall be at least D5 + 200
4. The weight of casing is calculated as l = 300. If the wall thickness is greater than 300, it shall be calculated separately.
5 flexible filler materials: asphalt hemp wire, polystyrene board, PVC foam plastic board.
6 sealing paste: polysulfide sealing paste, polyamide sealing paste.

classic case

Shanghai Luoying supplies flexible waterproof casing to Xi'an Taoyuan West Road Rainwater and sewage branch project


On March 3, the reporter learned from the Municipal Department of Xi'an that the western suburb municipal maintenance management company planned to carry out rainwater and sewage pipeline construction on Taoyuan West Road (Taoyuan section of Fengdeng Road) from March 5, with an estimated construction period of 91 days.
Taoyuan West Road starts from Fengdeng road in the West and connects Taoyuan road in the East. The red line of the road is 18-25m wide, and the width of the carriageway is 7m. The total length of the road is about 590m. There is only one d300mm sewage pipeline in the whole section of Taoyuan West Road, which has a small diameter and serious siltation. It is easy to cause ponding in rainy season and can not meet the needs of the people along the road.
In this construction, the original sewage pipeline will be abolished, and a d600mm, d1000mm rainwater pipeline and d500mm sewage pipeline will be built respectively. The construction is carried out in sections and totally enclosed. On March 5, the construction of the section from Fengdeng intersection to Xidian nursery school was started. After the completion of the section, the construction of the section from Xidian middle school to Xidian middle school will be carried out, and then the section from Xidian middle school to Taoyuan intersection will be constructed. During the construction period, please choose the road ahead of time for diversion and detour.
Shanghai Luoying a flexible waterproof sleeve is a kind of hardware pipe fitting which is suitable for the structure with vibration or strict waterproof requirements where the pipeline passes through the wall. The external welding water stop wing ring of the flexible waterproof casing is provided with sealing gasket and inner flange wire connection. It is designed and customized according to the actual situation of pipeline installation. It is used for waterproof on both sides of the wall. It is recommended that you use flexible waterproof sleeve. For example, both ends of the pipe wall of the submersible pump water supply and drainage system should be treated with waterproof treatment to prevent structural water seepage. The project adopts the waterproof casing products of our company, which can effectively improve the stability and safety of the pipeline through the wall. Product quality is worthy of your trust.

Product diagram

 Flexible waterproof casing

Parts materials

Please click on the picture to see the larger picture

 A flexible waterproof sleeve

No Name Quantity Material
one Body one Q235A
two Sealing ring 1 or 2 rubber
three Cover one Q235A
four Nut n Q235A
five Bolt n Q235A

technical parameter

Please click on the picture to see the larger picture

 A flexible waterproof sleeve

DN D1 D2 D3 D4 D5 I ten I1 I2 D1 D2 D3 n-M Weight of type A (kg)
Type I Type II Type I Type II
fifty sixty ninety-five sixty-five one hundred and forty-five two hundred sixty-five twenty-eight - seventy-two thirty three point five four eight 4-M12 fourteen point four zero -
sixty-five seventy-six one hundred and fourteen eighty one hundred and sixty-five two hundred and twenty sixty-five twenty-eight twenty-five seventy-two thirty three point seven five four eight 4-M12 sixteen point eight nine seventeen point zero seven
eighty eighty-nine one hundred and twenty-seven ninety-five one hundred and eighty two hundred and thirty-five sixty-five twenty-eight twenty-five seventy-six thirty-eight four four ten 4-M16 twenty-one point one two twenty-one point three one
one hundred one hundred and eight one hundred and forty-six one hundred and fourteen two hundred two hundred and fifty-five sixty-five twenty-eight twenty-five seventy-six thirty-eight four four point five ten 4-M16 twenty-four point three seven twenty-four point five eight
one hundred and twenty-five one hundred and thirty-three one hundred and eighty one hundred and forty two hundred and thirty-five two hundred and ninety sixty-five twenty-eight twenty-five seventy-six thirty-eight four six ten 6-M16 thirty-one point nine two thirty-two point three one
one hundred and fifty one hundred and fifty-nine two hundred and three one hundred and sixty-five two hundred and sixty three hundred and fifteen sixty-five twenty-eight twenty-five seventy-six thirty-eight four point five eight ten 6-M16 thirty-five point seven seven thirty-six point one seven
two hundred two hundred and nineteen two hundred and sixty-five two hundred and twenty-six three hundred and twenty three hundred and seventy-five sixty-five twenty-eight twenty-five seventy-six thirty-eight six eight ten 6-M16 forty-four point six nine forty-five point two nine
two hundred and fifty two hundred and seventy-three three hundred and twenty-five two hundred and eighty three hundred and eighty four hundred and thirty-five sixty-five twenty-eight twenty-five seventy-six thirty-eight eight ten ten 8-M16 fifty-nine point four one sixty point two two
three hundred three hundred and twenty-five three hundred and seventy-seven three hundred and thirty-three four hundred and thirty-five four hundred and ninety-five seventy-two twenty-eight thirty ninety forty-six eight ten ten 8-M20 eighty-nine point three seven ninety point zero two
three hundred and fifty three hundred and seventy-seven four hundred and twenty-six three hundred and eighty-five four hundred and eighty-five five hundred and forty-five seventy-two thirty-two thirty ninety forty-six ten ten ten 8-M20 ninety-nine point seven four one hundred point three
four hundred four hundred and twenty-six four hundred and eighty four hundred and thirty-five five hundred and forty six hundred seventy-two thirty-two thirty ninety forty-six ten ten ten 12-M20 one hundred and fourteen one hundred and fourteen point eight
four hundred and fifty four hundred and eighty five hundred and thirty four hundred and eighty-eight five hundred and ninety six hundred and fifty seventy-two thirty-two thirty ninety forty-six ten ten ten 12-M20 one hundred and twenty-four point one one hundred and twenty-four point seven
five hundred five hundred and thirty five hundred and eighty-five five hundred and thirty-eight six hundred and forty-five seven hundred and five seventy-two thirty-two thirty ninety forty-six ten ten ten 16-M20 one hundred and thirty-nine point three one hundred and forty point five
six hundred six hundred and thirty six hundred and ninety six hundred and forty seven hundred and fifty-five eight hundred and twenty seventy-five thirty-two thirty one hundred and four fifty-four ten ten twelve 16-M24 one hundred and ninety-seven point two one hundred and ninety-eight point two
seven hundred seven hundred and twenty seven hundred and eighty seven hundred and thirty eight hundred and forty-five nine hundred and ten seventy-five forty thirty one hundred and four fifty-four ten ten twelve 20-M24 two hundred and twenty-two point six two hundred and twenty-three point seven
eight hundred eight hundred and twenty eight hundred and eighty eight hundred and thirty nine hundred and fifty one thousand and twenty eighty forty forty one hundred and seventeen sixty ten ten twelve 20-M27 two hundred and eighty two hundred and eighty-two point three
nine hundred nine hundred and twenty nine hundred and eighty nine hundred and thirty one thousand and fifty one thousand one hundred and twenty eighty forty forty one hundred and seventeen sixty ten ten twelve 20-M27 three hundred and nine point six three hundred and twelve point two
one thousand one thousand and twenty one thousand and eighty one thousand and thirty one thousand one hundred and fifty one thousand two hundred and twenty eighty forty forty one hundred and seventeen sixty ten ten twelve 24-M27 three hundred and forty-one point one three hundred and forty-four

Product service

Professional manufacturing, professional services, Luoying to create more value for you!
Constantly improve the quality of service, excellence, "sincere service" is the eternal theme of Luo Ying. Luo Ying strictly in accordance with ISO9001-2000 quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. To strengthen communication with users, we will wholeheartedly provide customers with high-quality products and perfect services. Hereby, Luo Ying makes the following commitments:

Product standards
The products are designed, manufactured and accepted in strict accordance with Chinese GB, Hg standards and American API standards. The width of sealing surface exceeds the national standard.
Pre sales service
Product introduction, technical exchange, non-standard product design, troubleshooting.
In sale service
1. Keep the contract, ensure timely supply, keep in touch with customers at any time. 2. For special or complex products, our factory arranges technical personnel to train and guide users in the use, troubleshooting, adjustment and maintenance of products.
after-sale service
1. The warranty period of Luoying's products is 12 months from the date of delivery, and the "Three Guarantees" service (return, replacement and repair) is implemented.
2. During the use of the products, our factory regularly organizes technical and inspection personnel to visit and consult users for feedback on product quality, use status and improvement opinions, so as to further improve product quality.
3. After sales service personnel rush to the scene within 24-36 hours (48 hours outside the province).
4. For after-sales service, users are required to fill in the quality feedback form after service, and make appraisal opinions, so as to jointly improve the product quality and service quality of Luoying.

Ordering process and instructions

1. Please fax customer purchase list to 021-64207088 e-mail: Luoying @ luoyingsh.com or call 021-622122627.
2. List and price list of products for customers.
3. Specific agreement: delivery date, special requirements and other matters.


Ordering instructions
1. If the customer has special requirements for the product, the following instructions shall be provided in the order contract:
(1) Structural length
(2) Connection form
(3) Nominal diameter, full bore, reduced diameter, pipe size
(4) Medium range and temperature
(5) Our factory can make and design special products according to the special requirements of customers.
2. Our factory can configure and design special products according to the special requirements of customers.
3. If the customer provides the determined product type and model, the customer shall correctly explain the meaning and requirements of the model, and sign the contract under the condition that both parties understand and agree.

Online submission of demand feedback

You can fill in the form below and submit your contact information and product requirements to us. We will contact you as soon as possible. Thank you! In order to get in touch with you in time, please fill in your contact information and requirement information completely.

contact us

  • Customer service hotline: 021-6221-2627
  • Business QQ: 319992131
  • Business fax: 021-6420-7088
  • Email: info@luoyingsh.com
  • Company address: Building 10, north side of Songzheng highway, Shihudang Town, Songjiang District, Shanghai
  • Post code: 201201

You can also contact online customer service

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