Alloy Steel Mega Pipe for Urban Sewage Tunnels
Extra-large longitudinally welded alloy steel pipe (>48" OD) for main sewage conveyance tunnels. HTS 7305.31.60: welded circular alloy tubes >16". Stainless-clad for durability.
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Import Tips & Compliance
• Tunnel project specs aid but form dictates HTS
• Wall thickness certs prevent thin-wall errors
• Bulk ship only; sets → potential 7326
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