Black Pipe Fitting with M&F Socket for Fire Protection System

An M&F socket (male × female socket) is a threaded malleable iron pipe fitting designed to connect a male-threaded pipe to a female-threaded pipe or component within a piping system. By combining internal and external threads in one fitting, it provides a compact and reliable connection solution. M&F sockets are widely used in water supply, fire protection, gas, HVAC, and general industrial piping systems.

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Product Description

Overview – M&F Socket (Malleable Iron Threaded Socket)

An M&F socket (male × female socket) is a threaded malleable iron pipe fitting designed to connect a male-threaded pipe to a female-threaded pipe or component within a piping system. By combining internal and external threads in one fitting, it provides a compact and reliable connection solution. M&F sockets are widely used in water supply, fire protection, gas, HVAC, and general industrial piping systems.

Size	''1/8-6''
Material	malleable iron
Standard	ISO 5922/ISO 049/ISO 7-1，ISO 228	EN 1562:1997/EN 10242:2003	DIN 2950/1692/2999	ANSI/ASTM A197/A197M ANSI/ASME B16.3, B16.14, B16.39
Certifacate	FM/UL/CE/ABNT/SNI/SIRM/TSE/ISI
Surface Treatment	Nature Black
	Hot Dip Galvanized
	Eletro Galvanized
Work Pressures	PN25/2.5Mpa/363PSI/class150/25bar
Max Temperature	200°C (392°F)
Tensile Strength	≥350MPA
Elongation	≥10%
Hardness	≤HB150

Product Description

Manufactured from high-quality malleable iron, M&F sockets offer excellent mechanical strength, toughness, and resistance to pressure and impact. The fitting features one male threaded end and one female threaded end, produced in accordance with international thread standards to ensure secure, leak-tight connections and full compatibility with standard threaded pipes and components.
Available in black or galvanized finish, M&F sockets are suitable for both indoor and outdoor applications.

Key Features

Male × female threaded design: Allows direct connection between pipes or fittings with different thread genders
Compact structure: Reduces installation space and minimizes the number of fittings required
High-strength malleable iron: Provides durability, vibration resistance, and long service life
Standardized threads: Ensures excellent sealing performance and easy installation
Multiple surface finishes: Black or hot-dip galvanized options for corrosion protection

Functions & Applications

M&F sockets are primarily used to extend pipelines, adjust connection direction, or convert thread types without changing pipe size. The threaded design enables quick assembly and disassembly, making them ideal for both new installations and maintenance work.

Typical applications include: