FM UL Approved 4″ Casting Pipe Fittings Customized Rigid Couplings Grooved Couplings Ductile Iron
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FM UL Approved 4" Casting Pipe Fittings Customized Rigid Couplings Grooved Couplings Ductile Iron
The FM UL Approved 4" Casting Pipe Fittings Customized Rigid Couplings Grooved Couplings, made of Ductile Iron, are designed for fire fighting systems. They are available in various colors such as Red, Orange, Blue, Grey, and White. With a pressure rating of 2.5MPa, these fittings meet the FM UL standard. The surface is painted to ensure durability and the product is known for its high quality. The delivery time for these fittings is 15-30 days and the minimum order quantity is 50pcs. They are packaged in carton boxes.
Product Specifications
| Product Name | Rigid Couplings |
| Size | 4" |
| Material | Ductile iron |
| Application | Fire Fighting System |
| Standard | FM UL |
| MOQ | 50pcs |
The FM UL Approved 4" Casting Pipe Fittings Customized Rigid Couplings Grooved Couplings are widely used in water supply, gas supply, heat supply, and other commercial, civil, municipal building fire systems. They are also suitable for shipbuilding, mining, oilfield, textile, and other industrial pipeline systems, as well as subway, railway station, airport, seaport, bridge, and other pipeline systems.
The advantages of these fittings include their high quality, durability, and easy installation. They are designed to withstand a pressure of 2.5MPa, ensuring the safety of the fire fighting system. The Ductile Iron material used in these fittings provides excellent strength and corrosion resistance. The grooved connection allows for quick and efficient installation without the need for welding. These fittings are painted with a protective coating to enhance their longevity.
To install the FM UL Approved 4" Casting Pipe Fittings Customized Rigid Couplings Grooved Couplings, follow these steps:
- Clean the pipe ends to remove any dirt or debris.
- Apply a thin layer of lubricant to the grooves on the fitting.
- Insert the pipe ends into the grooves of the coupling until they stop.
- Secure the coupling by tightening the bolts using a wrench.
Maintenance of these fittings is relatively simple. Regularly inspect the fittings for any signs of damage or leaks. If any issues are found, replace the fittings immediately to ensure the integrity of the fire fighting system. The FM UL Approved 4" Casting Pipe Fittings Customized Rigid Couplings Grooved Couplings can be easily replaced by following the installation steps mentioned above.
For more information about our company's other products, EVER-POWER GROUP offers a wide range of Cast Iron products used in various industries. This includes Grey Cast Iron, Ductile Cast Iron, Alloy Steel Casting, Stainless Steel Casting, Carbon Steel Casting, Corrosion Resistant Steel Casting, Aluminum Pressure Die Casting, Aluminum Gravity Die Casting, Aluminum Sand Casting, Aluminium Alloy Casting, Refractory Steel Casting, Copper alloy casting, Zinc alloy casting, Sand Casting, Green Sand Casting, and more. Our products are known for their high quality, favorable prices, and considerate service. We welcome customers to contact us for customizations based on drawings or samples.
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Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port






