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ASTM B111 UNS C68700 Aluminium messingbuis CuZn20Al2 Warmtewisselaarbuis2025-09-15 09:50:52 |
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ASTM A179 / ASME SA179 naadloos koolstofstaal U-buigbuis warmtewisselaarbuis2025-04-01 16:53:39 |