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DIN 2000:2000 - Guidelines for drawing up requirements for the design, construction, operation and maintenance of public drinking water supply systems (DVGW Code of practice) (FOREIGN STANDARD)
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GEARENCH, C12-P, 1/4"TO2-1/2" TITAN CHAINTONG CODE A: Adjustable Wrenches: Amazon.com: Tools & Home Improvement
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DIN 1988-2:1988 - Drinking water supply systems; materials, components, appliances, design and installation (DVGW code of practice) (Foreign Standard)
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DIN 1988-8:1988 - Drinking water supply systems; operation (DVGW code of practice) (Foreign Standard)
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