Ductile Iron Grooved 90° Elbow | FM UL Approved | 2.5MPa | 1-12″ | Fire Sprinkler Fitting

Nānā Huahana

ʻO ka Ductile Iron Grooved 90° Elbow is a key fitting used in fire protection piping systems to change the direction of the pipeline. It utilizes a grooved connection method, ensuring rapid installation and a reliable seal. Manufactured from ductile iron—a material offering high strength and excellent toughness—the product is certified to rigorous international fire safety standards, including FM (Factory Mutual) and UL (Underwriters Laboratories), guaranteeing exceptional reliability in critical fire protection applications.
With a pressure rating of 2.5 MPa, the elbow meets the demanding requirements of medium- to high-pressure fire sprinkler systems. The surface features an epoxy resin coating and is available in a variety of colors—such as red, orange, blue, gray, and white—to suit specific system identification needs. Thanks to precision casting and strict quality control, this product is widely used in fire sprinkler systems for high-rise buildings, commercial complexes, industrial facilities, airports, and subway networks.

Ductile Iron Grooved 90° Elbow

Nā Kūlana ʻenehana

Ductile Iron Grooved 90° Elbow

Nā mea nui

◆ Ductile Iron Material – High Strength & Toughness
Premium ductile iron with tensile strength ≥450MPa and elongation ≥10%, combining cast iron’s pressure resistance with steel’s toughness, effectively resisting water hammer shocks and mechanical vibration for long-term reliable operation.

◆ FM/UL Dual Certified – Global Acceptance in Fire Protection
FM and UL certified, meeting the world’s strictest fire protection product standards – ready for use in fire engineering projects in Europe, America and beyond.

◆ 2.5MPa Pressure Rating – Suitable for Medium-High Pressure Systems
Rated at 2.5MPa (365 PSI), meeting demands of high-rise building fire sprinkler systems, fire pump discharge and high-pressure fire mains with ample safety margin.

◆ Grooved Connection – Fast & Reliable Installation
Mechanical grooved pipe system enables quick connections via couplings and rubber seals – no welding or flange bolting required, improving installation efficiency by 50%+ with easy maintenance and system modification.

◆ Epoxy Coating – Corrosion Resistant & Ola Hana lōʻihi
Internal and external surfaces treated with electrostatic epoxy coating, strong adhesion and salt spray resistance – significantly extending service life. Multiple color options enable visual identification management for different fire zones or systems.

Ductile Iron Grooved 90° Elbow

Nā noi

Fire protection grooved 90° elbows are used at directional change points in fire piping systems, applicable in the following fields:

• High-Rise Building Fire Systems: Indoor fire sprinkler networks for residential towers, nā keʻena, hotels, halemai
• Commercial Complexes: Fire water systems for shopping malls, supermarkets, convention centers
• Industrial Plants & Warehouses: Fire protection systems for factory workshops, logistics warehouses, hale hana hana
• ʻOihana & Transport Hubs: Fire systems for subway stations, airport terminals, railway stations, tunnels
• Petrokimika & Energy Facilities: Fire water curtains and foam extinguishing systems for oil depots, mea kanu kemika, nā mea kanu mana
• Data Centers & Precision Equipment Facilities: Pre-action fire water systems for server rooms, electrical rooms

Typical installation locations include fire riser direction changes, floor branch take-offs, fire pump room discharge piping turns, and sprinkler head branch connections.

Hoʻopili a hoʻouna

Keʻano hoʻopaʻa

• Small-diameter elbows (1″-4″): Packed in export-standard carton boxes or woven bags with protective padding
• Large-diameter elbows (5″-12″): Packed in fumigation-free wooden crates or steel-framed cases with protective caps on grooves/flanges
• Surface Protection: Epoxy coating wrapped with plastic film to prevent transit scratches
• Pallet Securing: Loaded on wooden pallets and fastened with steel straps for long-distance stability
• Customized packing solutions (e.g., moisture-proof for sea shipment) available upon request

Shipment Method

• Kākoʻo ʻia e ke kai, alahao, ea, or land transport, arranged to customer’s designated port or destination
• Partnered with long-term stable logistics providers to ensure fast and safe delivery

Ductile Iron Grooved 90° Elbow

Kūkākūkā uku

• T/T, L/C ma ka ʻike, Hui Komohana, PayPal, Kāleka kāki, etc.

ʻIkepili Hui

ʻO Luoyang Datang Energy Tech Co., Ltd he mea hoʻolako valve ʻoihana ʻoihana, hoʻolaʻa ʻia i ka hāʻawi ʻana i nā hāʻina hoʻomalu kahe hilinaʻi no ka mālama wai, kemika, aila & kinoea, HVAC, a me nā ʻōnaehana paipu ʻoihana ma ka honua holoʻokoʻa. Hana ʻia nā huahana āpau i nā kūlana honua me CE a me ISO 9001 palapala hōʻoia. Me ka oi 10 makahiki o ka hoao ana, he hale hana hou o 80,000 m², a 200+ limahana limahana, lawelawe mākou i nā mea kūʻai aku ma 10+ nā ʻāina me nā huahana maikaʻi, kumu kūʻai hoʻokūkū, a me ka hāʻawi pono ʻana.

FAQ

Q1: What is the difference between ductile iron and gray cast iron in fire fittings?

Ductile iron (QT450-10) offers tensile strength ≥450MPa and elongation ≥10% – 2-3 times that of gray cast iron – combining high strength with toughness, far superior in water hammer resistance and fracture resistance. Gray cast iron is brittle with poor impact resistance, unsuitable for high-pressure fire systems.

Q2: What do FM and UL certifications mean for fire fittings?

FM and UL are globally recognized as the strictest fire protection product certifications. Certified products have passed independent third-party lab tests for fire resistance, helu kaomi, sealing and longevity – eligible for international fire standard projects in Europe, ʻAmelika, Southeast Asia and the Middle East, and accepted by insurers.

Q3: What are the advantages/disadvantages of grooved connection vs. welded/flanged?

Grooved connection installs 3-5x faster than welding, requires no hot work, no weld slag, easy disassembly for future modification, and offers superior seismic and settlement resistance over rigid flanged joints. Slightly higher per-piece cost than welding, but overall lower cost when labor savings are factored in.

Q4: What fire systems is the 2.5MPa pressure rating suitable for?

2.5MPa (365 PSI) covers common fire system design pressures – typical applications include high-rise and super high-rise building fire risers (100m+), fire pump discharge sections, and upstream piping of dry/wet pre-action valve assemblies per NFPA standards.

Q5: What do the different colors (red, orange, etc.) on fire fittings indicate?

Colors identify fire system functional zones or hazard warnings. Red is most common for fire sprinkler systems. Orange typically indicates fire pump suction/discharge or wet alarm valve zones. Blue/gray/white are used for special fire systems or per owner/engineering color code specifications. Color does not affect product performance – all are epoxy coated.

Ductile Iron Grooved 90° Elbow