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astm a242 type 1 beam steel corten plate for boiler body
astm a242 type 1 beam steel corten plate for boiler body
- Comments: How to prevent astm a242 type 1 beam steel corten plate, steel plate cutting cracks? 1. Preheat the steel plate before cutting, and the preheating temperature depends on the quality grade and thickness of the steel plate. However, it needs to be heated ev
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