Shanghai Zhongzeyi Metal Materials Co., Ltd.
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Product: Drill Collar
Standard:API SPEC 7-1
Steel grade:AISI 4145H
Sizes:3 1/8" -- 11"
Connected Type:NC, IF, REG
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Standard:API SPEC 7-1
Steel grade:AISI 4145H
Sizes:3 1/8" -- 11"
Connected Type:NC, IF, REG
CONTACT US
Tel : +8618616920766
Email : lynn@cnzzysteel.com
WhatsApp : +8618616920766
Address: Floor 1, Building 2, No. 1876 Chenqiao Road, Fengxian District, Shanghai
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