This series of ductile iron loosing flanged fittings for water supply and drainage systems includes various structural forms such as four-way connectors, three-way connectors, 90° elbows, and bends. The surface is treated with a blue epoxy coating for corrosion protection. Flange connections allow for flexible assembly and sealing of the piping system. The products are ISO 9001 certified and support customized sizes, pressure ratings, and coating processes, complying with international standards such as GB, ISO, and EN. ductile iron loosing flanged fittings are suitable for pipeline network construction in municipal water supply, drainage, and sewage treatment applications.

Parameters

Material	Ductile iron
Size	1/2' ~ 4'
Standard	ASTM
Connectivity	Flange
Pipe Features	Flexible, Corrosion-resistant
Surface Inside	Portland Cement mortar lining, bitumen paint, epoxy paint, powder
Surface Outside	Epoxy paint, bitumen paint, epoxy powder coating
Country of origin	Hebei, China
Certificate	ISO 9001/14001/45001;CE
Support customization	OEM, OBM, ODM

Key Features

High-Strength Pressure Resistance

The ductile iron material has a yield strength of ≥400MPa, and the conventional pressure rating is 1.6-2.5MPa, meeting the high-pressure operating requirements of municipal pipeline networks.

Corrosion and Impact Resistance

The blue epoxy coating offers excellent resistance to acids, alkalis, and salt spray, protecting against corrosion from sewage and groundwater; the material has good toughness, able to withstand impacts caused by soil settlement and ground loads.

Excellent Sealing Performance

The flange connection uses a rubber gasket, ensuring no leakage after installation and guaranteeing stable operation of the pipeline system.

Standardized Compatibility

Precise dimensions allow for seamless connection with mainstream pipelines and valves domestically and internationally, compatible with multiple brands of systems.

Advantages

01.

Extra-long service life

Under normal operating conditions, the service life can reach over 50 years, far exceeding that of PVC, steel pipes, and other materials, resulting in lower long-term operating costs.

02.

Efficient and convenient installation

Flange connections eliminate the need for complex welding; installation can be completed simply by tightening bolts, significantly shortening the construction period.

03.

Wide range of applications

Suitable for various applications including water supply, drainage, sewage, and fire protection, and supports customization of non-standard pipe fittings such as those with special angles and different diameters.

04.

Low maintenance costs

Durable and not easily damaged, damaged coatings can be quickly repaired with paint, and only regular checks of the flange tightening status are required.

Application Scenarios

Municipal Water Supply

Laying of main city water pipes and secondary water supply networks in residential areas.

Drainage and Sewage

Urban rainwater drainage networks and systems for discharging domestic and industrial wastewater.

Fire Protection Engineering

Elbows, tees, and other connecting pipe fittings for fire water pipelines.

Industrial Pipelines

Cooling water and media transport pipelines in industries such as chemical plants and power plants.

Rural Water Conservancy

Pipeline systems for agricultural irrigation and rural drinking water safety projects.

Maintenance Procedures

Regular Inspection

Check the tightness of the flange bolts quarterly and tighten them promptly if loose to prevent leaks.

Corrosion Protection and Maintenance

Inspect the coating integrity annually and touch up any worn or damaged areas. For coastal areas and other high-salt-mist environments, maintenance is recommended every six months.

Debris Removal

Regularly clean the inside of the pipe fittings to remove mud and debris, preventing blockages and maintaining efficient water flow.

Leak Repair

If flange leakage is detected, replace the gasket and retighten the bolts immediately to ensure proper sealing.

Order Process

From manufacturing to usage, we are there to protect you every step of the way.

Customer Feedback

"These pipe fittings were used in the municipal water supply upgrade, and there have been no leaks or corrosion problems for over 5 years. Installation efficiency was 30% higher than with the old steel pipes."

"The elbows and tees used in the factory's sewage pipelines have stable corrosion resistance against industrial wastewater, and maintenance costs are much lower than with PVC fittings."

"The reducing pipes used in rural drinking water projects have excellent adaptability, and the flange connections make installation convenient, solving construction difficulties in remote areas."

After-Sales Service

Technical Support

We provide installation drawings and video tutorials, and our professional engineers can assist in resolving complex installation issues.

Fast Response

Solutions to after-sales requests will be provided within 24 hours.

Accessory supply

We provide a long-term supply of accessories such as flange bolts and gaskets, facilitating routine maintenance and replacement.

Company Profile

SND is headquartered in Wu An Industrial Park, Hebei Province.After several years of steady development, we have grown into an industrial enterprise integrating design, research and development, production, and sales.SND Foundry have been specializing in the production and sales of manhole cover and gully grating, valves, pipe & pipe fittings and metal castings products more than 10 years.We have 2 set of vertical production lines, 1 set of horizontal production line, 1 set of automatic painting line, shooting core machines and hand-made modeling workshop for big OEM items.We have our own design and professional team to help our clients supply one-stop service.

Our products are mainly used in railways, highways, airports, schools, public buildings, residential enclosures, security bases, and other fields. With advanced production equipment, strict process control, and a strong sense of responsibility, the company has earned the trust of its customers. Our products are not only popular in China but also exported to India, Singapore, the Middle East, Mexico, the United States, Europe, and other countries and regions.

FAQ

Q: Can l get samples before order?

A: Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings

Q: What is your delivery time?

A: Our delivery time is about one week, timing according to the number of customers

Q: What are your payment terms?

A: Our usual payment methods are T/T, L/C, D/A, D/P, Western Union, MoneyGram, payment methods can be negotiated and customized with customers

Q: What do your factory do regarding quality control?

A: We have obtained ISO, CE and other certifications. From materials to products, we check every process to maintain good quality.

Q: How do you make our business long-term and good relationship?

A: We keep good quality and competitive price to ensure our customers benefit, We respect every customer as our friend, and we sincerely do business and make friends with them, No matter where they come from.

Q: How about MOQ?

A: The minimum order quantity is 1 Ton, which can be customized according to customer requirements.Please feel free to leave us message if you have any question about us and our products.

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