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Patent Application

High-Strength Impact-Resistant Neck Butt-Weld Flange for Oil Pipelines

Patent application acceptance notice: High-Strength Impact-Resistant Neck Butt-Weld Flange for Oil Pipelines (App. No. 202620057918.8, Utility model)

Certificate Details

Type

Patent application acceptance notice (utility model)

Title

High-Strength Impact-Resistant Neck Butt-Weld Flange for Oil Pipelines

Application No.

202620057918.8

Filing Date

2026-01-16

Issued By

China National Intellectual Property Administration (CNIPA)