Malleable iron pipe fittings

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Quick joint


Executive standard: GB/T 3287 Application field: suitable for conveying water, oil, air, gas, steam and other general pipeline connection. Specifications: DN 15-100mm Working pressure: 1.6MPa Material: Malleable cast iron KTH330-08 Tensile strength: ≥ 330MPa Elongation: ≥ 8%

Enterprise standard oil


Executive standard: GB/T 3287 Application field: suitable for conveying water, oil, air, gas, steam and other general pipeline connection. Specifications: DN 15-100mm Working pressure: 1.6MPa Material: Malleable cast iron KTH330-08 Tensile strength: ≥ 330MPa Elongation: ≥ 8%

Enterprise standard reducing elbow


Executive standard: GB/T 3287 Application field: suitable for conveying water, oil, air, gas, steam and other general pipeline connection. Specifications: DN 15-100mm Working pressure: 1.6MPa Material: Malleable cast iron KTH330-08 Tensile strength: ≥ 330MPa Elongation: ≥ 8%

Enterprise standard reducer hoop


Executive standard: GB/T 3287 Application field: suitable for conveying water, oil, air, gas, steam and other general pipeline connection. Specifications: DN 15-100mm Working pressure: 1.6MPa Material: Malleable cast iron KTH330-08 Tensile strength: ≥ 330MPa Elongation: ≥ 8%

[News] Jianzhi Group participated in the 24th Heating, HVAC and New Energy Heating Exhibition!


On April 2-4, 2024, the 24th Harbin Heating, HVAC and New Energy Heating Exhibition was successfully held in Harbin International Convention and Exhibition Center, with more than 500 exhibitors. Hebei Jianzhi Casting Group Co., Ltd. was invited to participate in the exhibition. More than 50 dealers from all over the Jianzhi Group participated in the exhibition.

[Spring Festival] Jianzhi Group wishes you a happy Year of the Dragon and a long trip to China!


2023 is a year of far-reaching growth, the first outbreak of the epidemic, the industry is experiencing a century of unprecedented winter, your trust is our driving force.

[Description] Construction and support pipe safety instructions


The "Jianzhi" brand is the guarantee of quality and reputation. The malleable cast iron pipe fittings (Magang pipe fittings) produced by Jianzhi Group are produced in strict accordance with GB/T3287-2011 standards, and the product performance fully meets the national standard requirements. The company's products have been underwritten by the product quality liability insurance of the People's Insurance Company of China.

Hebei Jianzhi Casting Group Ltd.
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