Lei ZHENG

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Steel for coiled tubing with low yield ratio and ultra-high strengt...
- Patent number 11,396,680
- Issue date Jul 26, 2022
- Baoshan Iron & Steel Co., Ltd.
- Chuanguo Zhang
- C21 - METALLURGY OF IRON
Information Patent Grant
Grade 550MPA high-temperature resistant pipeline steel and method o...
- Patent number 11,085,098
- Issue date Aug 10, 2021
- Baoshan Iron & Steel Co., Ltd.
- Ping Hu
- C21 - METALLURGY OF IRON
Information Patent Grant
X80 pipeline steel with good strain-aging performance, pipeline tub...
- Patent number 11,053,563
- Issue date Jul 6, 2021
- Baoshan Iron & Steel Co., Ltd.
- Mingzhuo Bai
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
STEEL FOR COILED TUBING WITH LOW YIELD RATIO AND ULTRA-HIGH STRENGT...
- Publication number 20200255917
- Publication date Aug 13, 2020
- Baoshan Iron & Steel Co., Ltd
- Chuanguo ZHANG
- C21 - METALLURGY OF IRON
Information Patent Application
X80 PIPELINE STEEL WITH GOOD STRAIN-AGING PERFORMANCE, PIPELINE TUB...
- Publication number 20180073094
- Publication date Mar 15, 2018
- Baoshan Iron & Steel Co., Ltd
- Mingzhuo Bai
- C21 - METALLURGY OF IRON
Information Patent Application
GRADE 550MPA HIGH-TEMPERATURE RESISTANT PIPELINE STEEL AND METHOD O...
- Publication number 20170283901
- Publication date Oct 5, 2017
- Baoshan Iron & Steel Co., Ltd
- Ping HU
- C21 - METALLURGY OF IRON