FM/UL Approved Grooved Flexible Coupling

Model NO.
Bolts and Nuts
ISO 898-1 Class8.8
Working Pressure
Surface Treatment
Epoxy-(Red)Ral3000, Epoxy-Orange, Epoxy Powder Pai
Fire Safety System
Transport Package
in Carton Box on Plywood Pallet
HS Code
We continue to keep increasing and perfecting our solutions and service. At the same time, we operate actively to do research and enhancement for FM/UL Approved Grooved Flexible Coupling, The product will supply to all over the world, such as: Peru, Turin, Sacramento, Based on products and solutions with high quality, competitive price, and our full range service, we have accumulated experienced strength and experience, and we've built up a very good reputation in the field. Along with the continuous development, we commit ourselves not only to the Chinese domestic business but also the international market. May you moved by our high quality items and passionate service. Let's open a new chapter of mutual benefit and double win.
Shandong Luyuan Fire Technology Co., Ltd. Diamond / Audited Supplier

Ductile Iron Pipe Fittings Grooved Coupling 

Product Details         FM/UL/CE Ductile Iron Grooved Fittings for Fire protection System


Material Ductile cast iron conforming to ASTM A-536, Grade 65-45-12
Surface Treatment  Epoxy powder coating (Red color- RAL3000; Orange)Optional: Galvanized (Zinc Plated, HDG Or Dip painted)
Size  1″-12″
Working Pressure 300PSI
Cerification  ISO 9001:2008,FM,UL,CCC and CE approved
Connect End Type   Grooved end ,Thread end 
Technology  Casting
Payment  by T/T,L/C
Structure type 1) Rigid Coupling,Flexible Coupling, Reducing Flexible Coupling
2) Long Radius and Short Radius Elbow (90°/45°/22.5°/11.25°)
3) Equal Tee, Grooved Reducing Tee, Grooved Reduing Tee(Threaded outlet)
4) Grooved Mechanical Tee,Grooved Mechanical Cross
5) Equal Cross, Grooved Reducing Cross
6) Grooved Reducer, Threaded Reducer
7) Adapter Flange, Grooved Split Flange
8) Cap,End Cap


Our Factory


• LUYUAN FIRE TECHNOLOGY is a large-scale manufacturer specialized in production of Ductile  iron Grooved coupling and fittings .We have 350 employees, including 185 professional technicians, 15 senior engineers. Annual capacity is over 30000 Tons. 

• Products are on sale over 300 cities of China and exported to the United State, South Africa and more than 30 countries and areas.

• Our factory have two autoEuropematic Baoding Well casting lines , One DISAMATIC 3 molding line from Denmark, the production process use fully automatic intelligent control system, we have CNC lathe, Mold machining center, Automatic coating and packaging line and so on. 

• With Many years experience manufacturing pipe joining system products, weve created LUYUAN to be a brand you can trust.

Test and Certificate

• Products tests include thorough and continuous production inspection and regular performance tests. The production inspection is following ISO9001:2000 Quality Management System. The performance testes are running in accordance with UL213, AWWA C606 and GB5135.11, GB8259 requirements.

• Casting material is inspected by spectrometer and physical analysis,computerized spectrographic and carbon-sulphur analysis. Tensile, metallographic and impact tests are performed Daily.

• The production inspection include in-coming inspection, process inspection and final inspection, covers material.

• Surface and dimension check. All those steps are running for each heat number material. Besides,100% leakage test is applied on fittings.

• The performance tests include sealing, hydrostatic pressure, bending moment test, hot/cold temperature

• gasket test, water hammer test and fire exposure test.

Production Flow and Advance Disa Production Line 

Large Warehouse 
Ensure the stability of supply and the speed of delivery

Package and Delivery

Packaging  In poly wooden case,or in carton on the poly wooden pallets,we can pack products as per custmons requirement.
Delivery detail normally within 15days,depending on order quantity.

Sincerely Service

Welcome to our factory and waiting for meet you on the fire protection exhibition.

1.What is your MOQ?
 Our MOQ is usually 1 pallet.
2.What is your delivery time?
 The time of delivery is around 20-30days.
3.What is the shipping port?
  We ship the goods via Qingdao 
4.What is your payment terms?
  We accept 30% T/T in advance,70% in the period of shipment or 100% L/C.
5.How should I contact you?
  You can send us an email by click Contact Supplier bottom.
6.What is the location of your factory?
  Our factory is located in Weifang City, Shandong Province, China.
If you would like to have a visit, you are much welcome.
7.How about the samples?
 We could send you the samples ,most samples are free to send to most places in China. If sent to other countries, transport fee should be paid by you.

With mature and advance technology, quality product, prudent working style, we believe we will be your best supplier!