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BBN supplied 3800 tons SMA490CP atmospheric corrosion resisting steel steel pipe to Russia
BBN supplied 3800 tons SMA490CP atmospheric corrosion resisting steel steel pipe to Russia
- Comments: Cold drawn 42CrMo round steel is a high alloy wear-resistant material composed of a variety of alloy elements, so its self-melting property is good, and it is not necessary to remove rust when welding workpieces, and because it can be welded at a low leve
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