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Standard Specification

GB/T 5135.11-2006 sprinkler systems-Part 11: Groove fittings

GB/T 25746-2010 Metallographic Examination of Malleable Cast Iron

GB/T 3287-2011 Malleable cast iron pipe fittings

GB/T9440-2010 Malleable Iron Castings

Hebei Jianzhi Foundry Group Co., Ltd.

Hebei Jianzhi Foundry Group Co., Ltd.

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market@jianzhi-fitting.com

Domestic Trade:

+86-315-6500133/6509901

Foreign Trade:

+86-315-6506256/6509922

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