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SHENG YUAN,Dongying,Shandong,China China
الشخص الذي يمكن الاتصال به Ms. Tin Tin
عنوان SHENG YUAN, Dongying, Shandong
Intergal heavy weight drill pipe is made from AISI 4142H-4145Halloy steel, the manufacturing follows API SPEC
HISIN kelly pipes are made from 4145H modified alloy steel in accordance with API Spec.7-1 latest edition, whi
Comprehensive properties: good smooth finish, favorable flexibility, strong resistance to impact, outstanding
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