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Black Backnuts with UL/ FM certificates
Malleable Iron Pipe Fitting - Backnuts Details:
Size: 1/4''to 6''
Finish: Hot Dipped Galvanized, Black, Electro Galvanized,
Usage: Fire Protection (Fire Fighting), plumbing, infrastructure construction, and decoration, etc.
American Standard: Material: ASTM A-197
Dimension: ASME B16.3 16.14
Galvanization: ASTM A153
Threads: ANSI B1.20.1
Tensile strength: Min. 33kg/mm²
Hardness: Max. 150HB
Delivery: 45-50days after prepayment
Packing: Two inner boxes then master seaworthy carton.