Jianzhi Brand fittings are produced in accordance with the following national or international standards:
- GB/T 3287, GB/T 7306.1, GB/T 7306.2
- EN1562, EN10242
- BS143 & 1256, BS 21, BS EN 10242
- ISO 49, ISO 7-1
- DIN2950, DIN1692, DIN2999
- ANSI, ASME B1.20.1
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